OBD Software

TOAD Auto Diagnostics

The TOAD system is a suite of car diagnostic tools and tuning software. Loaded with all the same functions used by dealerships and constantly updated by expert engineers, so youll always be supported. The included manuals contain thousands of pages of fault codes, patches, PCB layouts, and step-by-step instructions on how to fix any code. Structured with pictures, schematics, and easy to follow directions any novice can understand. For those who are more advanced, the manuals also have comprehensive sections that go in depth covering every possible aspect, no matter how complex. Save hundreds of dollars by doing the diagnostics yourself and use the supplied manuals to help walk you through the process of fixing the problem. Never hesitate to contact the customer support team with any question about your repairs or ECU chiptuning problems. Continue reading...

Total OBD & ECU Auto Diagnostics Overview

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Contents: Software
Author: Alex Eisenberg
Official Website: www.totalcardiagnostics.com
Price: $127.00

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Total OBD and ECU Auto Diagnostics Review

Highly Recommended

It is pricier than all the other ebooks out there, but it is produced by a true expert and is full of proven practical tips.

All the modules inside this book are very detailed and explanatory, there is nothing as comprehensive as this guide.

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Check Other Dtcs Output In Addition To Dtc P

(a) Connect the OBD II scan tool or the intelligent tester to the DLC3. (b) Turn the ignition switch on (IG) and push the OBD II scan tool or the intelligent tester main switch ON. (c) When you use intelligent tester Select the item DIAGNOSIS ENHANCED OBD II DTC INFO CURRENT CODES. (d) Read the DTCs using the OBD II scan tool or the intelligent tester. P0711 and other DTCs If any other codes besides P0711 are output, perform troubleshooting for those DTCs first.

Check Any Other Dtcs Output In Addition To Dtc Pa

(a) Connect the intelligent tester to the DLC3. (d) Select the following menu items DIAGNOSIS ENHANCED OBD II DTC INFO CURRENT CODES. (e) Read the DTCs. P2A00 and other DTCs If any DTCs relating to the A F sensor (DTCs for the A F sensor heater or A F sensor admittance) are output, troubleshoot those DTCs first.

NOTE During testing if DTCs other than DTC B are displayed disregard them

Reconnect air bag sensor assembly connector A20 (center connector) to air bag sensor assembly. Connect jumper wire between Yellow-Red wire (circuit P+) and Yellow-Green wire (circuit P-) on air bag sensor assembly side of passenger-side air bag module harness connector. Connect negative battery cable. Wait at least 2 seconds. Turn ignition switch to ON position. Wait at least 20 seconds. Clear DTCs. See CLEARING CODES under DIAGNOSTICS. Turn ignition switch to LOCK position. Wait at least 20 seconds. Turn ignition switch to ON position. Wait at least 20 seconds. Retrieve DTCs. See RETRIEVING CODES under DIAGNOSTICS. If DTC 54-B0106 is not displayed, go to next step. If DTC 54-B0106 is displayed, replace air bag sensor assembly. 4. Turn ignition switch to LOCK position. Disconnect negative battery cable. Wait at least 90 seconds. Reconnect passenger-side air bag module connector. Connect negative battery cable. Wait at least 2 seconds. Turn ignition switch to ON position. Wait at least...

Diagnostic Trouble Code Chart

If a DTC is displayed during the DTC check, check the circuit indicated by the DTC. For details of each code, refer to the See page in the DTC chart. Control Module Communication Bus OFF CAN communication system CAN communication system (Skid control ECU to yaw rate and acceleration sensor) In some cases, the intelligent tester cannot be used when the ABS warning light remains on. 4. CAN communication system CAN communication system (Skid control ECU to ECM) CAN communication system (Skid control ECU to yaw rate and acceleration sensor) CAN communication system (Skid control ECU to steering angle sensor) In some cases, the intelligent tester cannot be used when the VSC warning light remains on. The speed sensor detects wheel speed and transmits the appropriate signals to the skid control ECU. These signals are used for control of the ABS system. Each of the front and rear rotors has 48 serrations. When the rotors rotate, the magnetic field generated by the permanent magnet in the...

Diagnostic Trouble Code Check Procedure

Diagnostic Trouble Code Check (Make a note of and then clear) Diagnostic Trouble Code Check Diagnostic Trouble Code Display Same diagnostic trouble code is displayed The problem is still occurring in a place other than in the diagnostic circuit (The diagnostic trouble code displayed first is either for a past problem or it is a secondary problem) Taking into account the above points, a flow chart showing how to proceed with troubleshooting using the diagnostic trouble code check is shown below. ThiS'flow chart shows how to utilize the diagnostic trouble code check effectively, then by carefully checking the results, indicates how to proceed either to diagnostic trouble code troubleshooting or to troubleshooting of problem symptoms. Diagnostic trouble code check Making a note of and clearing of the diagnostic trouble codes displayed

Open or Short in Heated Oxygen HO Sensor Circuit DTCs P and P or P and P

High or Low Impedance of Heated Oxygen (HO2) Sensor (DTCs P0136 and P0156 or P0137 and P0157) DTCs P0136 and P0156 indicate the deterioration of the HO2 sensor. The ECM sets the DTCs by calculating the impedance of the sensor when the typical enabling conditions are satisfied (2 driving cycle). DTCs P0137 and P0157 indicate an open or short circuit in the HO2 sensor (2 driving cycle). The ECM sets the DTCs when the impedance of the sensor exceeds the threshold 15 kQ. Related DTCs

Check Any Other Dtcs Output In Addition To Misfire Dtcs

(a) Connect the intelligent tester to the DLC3. (d) Select the following menu items DIAGNOSIS ENHANCED OBD II DTC INFO CURRENT CODES. (e) Read DTCs. P0300, P0301, P0302, P0303 and or P0304 and other DTCs If any DTCs other than P0300, P0301, P0302, P0303 and P0304 are output, troubleshoot those DTCs first.

Start the inspection from step in case of using the Toyota handheld tester and start from step in case of not using the

Toyota Sequoia 2001 4x4 Vsc Trac Sensors

Connect the TOYOTA hand-held tester to the DLC3. b. Turn the ignition switch ON and push the TOYOTA hand-held tester main switch ON. c. Select the ACTIVE TEST mode on the TOYOTA hand-held tester. Check ON-OFF function of the VSC buzzer with the TOYOTA hand-held tester. Connecting terminals Tc and CG of the DLC3 causes the ECU to display the DTC by blinking the ABS warning light, VSC TRAC warning light and BRAKE warning light. 1. Check voltage between terminals Tc and CG of the DLC3. PREPARATION Fig. 110 Checking Voltage Between Terminals Tc & CG Of DLC3 Fig. 110 Checking Voltage Between Terminals Tc & CG Of DLC3 Measure voltage between terminal Tc and CG of DLC3. OK 2. With ignition switch OFF, check for open and short circuit in harness and connector between SKID CONTROL ECU AND DLC3, DLC3 AND BODY GROUND . Transition to the sensor check mode can be performed by connecting terminals Ts and CG of the DLC3 and turning the ignition switch from OFF to ON. 1. Check voltage...

Connect Obd Ii scan tool or Toyota handheld tester and read value of engine coolant temperature

Jinma 284 Ignition Switch Wiring

(a) Connect the OBD II scan tool or TOYOTA hand-held tester to the DLC3. (b) Turn the ignition switch ON and push the OBD II scan tool or TOYOTA hand-held tester main switch ON. Read temperature value on the OBD II scan tool or TOYOTA hand-held tester. OK If there is open circuit, OBD II scan tool or TOYOTA hand-held tester indicates -40 C (-40 F). If there is open circuit, OBD II scan tool or TOYOTA hand-held tester indicates 140 C (284 F) or more. Read temperature value on the OBD II scan tool or TOYOTA

NOTE Start the inspection from step in case of using the Toyota handheld tester and start from step in case of not

2002 Sequoia Lights Diagram

Connect the TOYOTA hand-held tester to the DLC3. b. Turn the ignition switch ON and push the TOYOTA hand-held tester main switch ON. c. Select the ACTIVE TEST mode on the TOYOTA hand-held tester. Check that ON and OFF of the VSC TRAC warning light can be shown on the combination meter with the TOYOTA hand-held tester.

Clear Dtc Using Intelligent Tester

Hook up the intelligent tester to the DLC3. c. Operate the intelligent tester to erase the codes. Please refer to the intelligent tester operator's manual for further Intelligent r details. Fig. 23 Connecting Intelligent Tester To DLC3 Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. Fig. 23 Connecting Intelligent Tester To DLC3 Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

Dtc Vehicle Can Communication Malfunction description

Vsc Vehicle Skid Control

The circuit is used to send TRAC and VSC control information from the skid control ECU to the ECM, and engine control information from the ECM to the skid control ECU via the CAN communication system. This DTC is output when communication between the translate ECU and the skid control ECU is cut off. ENG+, ENG- circuit (CAN communication system) Fig. 29 Vehicle CAN Communication Malfunction Wiring Diagram Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. Fig. 29 Vehicle CAN Communication Malfunction Wiring Diagram Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

Clear Dtc Using the Intelligent tester

Connect the intelligent tester to the DLC3. d. Enter the following menus DIAGNOSIS ENHANCED OBD II DTC INFO CLEAR CODES. DLC3 CAN VIM Fig. 29 Connecting Cable Of Intelligent Tester To DLC3 DLC3 CAN VIM Fig. 29 Connecting Cable Of Intelligent Tester To DLC3 3. CLEAR DTC (Without using the Intelligent tester) Intelligent tester only NOTE All the stored DTCs and freeze frame data are erased if 1) the ECM is changed from normal mode to check mode or vice versa or 2) the ignition switch is turned from ON to ACC or OFF while in check mode. Before changing modes, always check and make a note of any DTCs and freeze frame data.

NOTE There is a case that Toyota handheld tester cannot be used when ECU is abnormal

Circuit Ecu Airbag

In case of using the TOYOTA hand-held tester PREPARATION a. Connect the TOYOTA hand-held tester to the DLC3. b. Turn the ignition switch ON and push the TOYOTA hand-held tester main switch ON. c. Select the ACTIVE TEST mode on the TOYOTA hand-held tester. Check that ON and OFF of the ABS warning light can be shown on the combination meter by the TOYOTA hand-held tester. In case of not using the TOYOTA hand-held tester PREPARATION

Perform Active Test Using Intelligent Tester Brake Warning Light

Intelligent Tester Intelligent Tester (a) Connect the intelligent tester to the DLC3. (d) Select the following menu items DIAGNOSIS OBD MOBD select vehicle ACTIVE TEST BRAKE WARN LAMP. (e) Check that the BRAKE warning light turns on and off in the combination meter using the intelligent tester. OK

Check Dtc Using Intelligent Tester

Toyota Dlc3 4runner

Connect the intelligent tester to the DLC3. Refer to the intelligent tester operator's manual for further details. DLC3 Fig. 20 Connecting Intelligent Tester To DLC3 Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. a. Using SST, connect terminals TC and CG of the DLC3. Fig. 21 Identifying DLC3 Terminal Connector Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. Fig. 21 Identifying DLC3 Terminal Connector Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. e. Remove the SST from the terminals of the DLC3.

OBD OnBoard Diagnostic System Generation

Toyota Engine Diagnostic Receipt

In April 1985, the California Air Resources Board (CARB) approved On-Board Diagnostic system regulations, referred to as OBD. These regulations, which apply to almost all 1988 and newer cars and light trucks marketed in the State of California, require that the engine control module (ECM) monitor critical emission related components for proper operation and illuminate a malfunction indicator lamp (MIL) on the instrument panel when a malfunction is detected. The OBD system also provides for a system of Diagnostic Trouble Codes (DTC) and fault isolation logic charts in the repair manual, to assist technicians in determining the likely cause of engine control and emissions system malfunctions. The basic objectives of this regulation are twofold OBD self diagnosis applies to systems which are considered to be most likely to cause a significant increase in exhaust emissions if a malfunction occurs. Most notably, this includes

OBD Diagnostic Trouble Codes DTC

Diagnostic Trouble Codes or DTCs are generated by the on-board diagnostic system and stored in the ECM memory. They indicate the circuit in which a fault has been detected. DTC information remains stored in the ECM long term memory regardless of whether a continuous (hard) fault or intermittent fault caused the code to set. Toyota products with OBD will continue to store a DTC in the ECM long term memory until the code is cleared by removing power from the ECM BATT terminal. In most cases, the EFI fuse powers this keep alive memory.

Hybrid Vehicle Control Electronic Control Unit

Hybrid Vehicle (HV) control Electronic Control Unit (ECU) is used for controlling the hybrid system which uses the gasoline engine along with the AC electric motor for vehicle operation. Hybrid vehicle control ECU is referred to as HV ECU. The HV ECU is located below carpet on floor panel, just below passenger's side of instrument panel. HV ECU receives input information from various sensors and electronic control units and determines the torque and output power. HV ECU delivers the demand torque and target RPM to ECM. The ECM uses this input information for controlling throttle opening, fuel injection system, ignition timing and Variable Valve Timing (VVT) system. The ECM delivers the actual engine RPM to the HV ECU. When vehicle is stopped, the HV ECU may deliver a signal to the ECM to indicate that vehicle is stopped. ECM uses this for reducing fuel consumption.

Toyota Yaris Can Bus Circuit

CHECK CAN BUS LINES FOR SHORT CIRCUIT (D-CAN J C - AIR CONDITIONING AMPLIFIER) CHECK CAN BUS LINES FOR SHORT CIRCUIT (D-CAN J C - CENTER AIRBAG SENSOR ASSEMBLY) CHECK CAN BUS LINES FOR SHORT CIRCUIT (ECM MAIN WIRE) CHECK CAN BUS LINES FOR SHORT CIRCUIT (BRAKE ACTUATOR (SKID CONTROL ECU) BRANCH WIRE) CHECK CAN BUS LINES FOR SHORT CIRCUIT (AIR CONDITIONING AMPLIFIER BRANCH WIRE) CHECK CAN BUS LINES FOR SHORT CIRCUIT (CENTER AIRBAG SENSOR ASSEMBLY BRANCH WIRE) CHECK CAN BUS LINES FOR SHORT CIRCUIT (P-CAN J C - POWER STEERING ECU) CHECK CAN BUS LINES FOR SHORT CIRCUIT (P-CAN J C - MAIN BODY ECU) CHECK CAN BUS LINES FOR SHORT CIRCUIT (P-CAN J C - COMBINATION METER ECU) CHECK CAN BUS LINES FOR SHORT CIRCUIT (POWER STEERING ECU MAIN WIRE)

Precautions For Can Communication

(a) CAN communication lines are used to receive information from the skid control ECU (ABS ECU) and the ECM, and to transmit warnings to the combination meter. When there are any problems in the CAN communication lines, DTCs of the CAN communication line are output. (b) Perform troubleshooting of the communication line problems when the CAN communication DTCs are output. Be sure to start troubleshooting on the electronic power steering system after confirming that the CAN communication system is normal. (c) Since the CAN communication line has its own length and route, it cannot be repaired temporarily with the bypass wire, etc.

Symptom Confirmation And Diagnostic Trouble Code Check

The diagnostic system in the TERCEL fulfills various functions. The first function is the Diagnostic Trouble Code Check in which a malfunction in the signal circuits to the ECU is stored in code in the ECU memory at the time of occurrence, to be output by the technician during troubleshooting. Another function is the Input Signal Check which checks if the signals from various switches are sent to the ECU correctly. Diagnostic Trouble Code Check In diagnostic trouble code check, it is very important to determine whether the problem indicated by the diagnostic trouble code is still occurring or occurred in the past but returned to normal at present. In addition, it must be checked in the problem symptom check whether the malfunction indicated by the diagnostic trouble code is directly related to the problem symptom or not. For this reason, the diagnostic trouble codes should be checked before and after the symptom confirmation to determine the current conditions, as shown in the table...

Symptom Confirmation And Diagnostic Trouble Code

0 The diagnostic system in COROLLA has various functions. The first function is the Diagnostic Trouble Code (DTC) Check, in which a malfunction in the signal circuits to the ECU is stored in code form in the ECU memory. Another function is the Input Signal Check, which checks if the signals from various switches are sent to the ECU correctly. By using these check functions, it is possible to quickly narrow down potential problem areas and troubleshooting can be performed effectively. The diagnostic functions are incorporated in the following systems in the COROLLA. In the DTC check, it is very important to determine whether the problem indicated by the DTC is still occurring or has occurred in the past but returned to normal at present. In addition during the problem symptom check, it a check must be made on whether the malfunction indicated by the DTC is directly related to the problem symptom or not. For this reason, the DTC should be checked before and after symptom confirmation to...

Read Value Of Intelligent Tester Fuel Trim

Calculate the total fuel trim values to check the characteristic deviation of the mass air flow meter. (a) Connect an intelligent tester to the DLC3. Turn the ignition switch ON. Turn the tester ON. Select the following menu items DIAGNOSIS ENHANCED OBD II DATA LIST PRIMARY SHORT FT 1 and LONG FT 1. Read the values displayed on the tester. Add together the SHORT FT 1 and LONG FT 1 values to obtain the total FUEL TRIM. PERFORM ACTIVE TEST USING INTELLIGENT TESTER (PURGE VSV) Connect the intelligent tester to the DLC3. Turn the ignition switch to ON. Turn the tester ON. Select the following menu items DIAGNOSIS ENHANCED OBD II ACTIVE TEST EVAP VSV. Disconnect the hose (connected to the canister) from the purge VSV. Start the engine. PERFORM ACTIVE TEST USING INTELLIGENT TESTER (OPERATE OCV) (a) Connect the intelligent tester to the DLC3. (d) Select the following menu items DIAGNOSIS ENHANCED OBD II ACTIVE TEST VVT CTRL B1. READ VALUE OF INTELLIGENT TESTER (ENGINE SPD) (a) Connect an...

Check Any Other Dtcs Output In Addition To Dtc P Or P

(a) Connect the intelligent tester to the DLC3. (c) Select the following menu items DIAGNOSIS ENHANCED OBD II DTC INFO CURRENT CODES. (d) Read DTCs. P0171 or P0172 and other DTCs If any DTCs other than P0171 or P0172 are output, troubleshoot those DTCs first. PERFORM ACTIVE TEST USING INTELLIGENT TESTER (A F CONTROL) Connect the intelligent tester to the DLC3. Start the engine and turn the tester ON. Warm up the engine at an engine speed of 2,500 rpm for approximately 90 seconds. On the tester, select the following menu items DIAGNOSIS ENHANCED OBD II ACTIVE TEST A F CONTROL. To display the graph, select the following menu items on the tester DIAGNOSIS ENHANCED OBD II ACTIVE TEST A F CONTROL USER DATA AFS B1S1 and O2S B1S2 then press the YES button and then the ENTER button followed by the F4 button. READ VALUE USING INTELLIGENT TESTER (MAF) (a) Connect the intelligent tester to the DLC3. (c) Select the following menu items DIAGNOSIS ENHANCED OBD II DATA LIST PRIMARY MAF and COOLANT...

The Obdii Diagnostic Circuit

Obd Scan Tool Diagram

The OBD-II data line is a bi-directional communication link which is capable of transmitting and receiving data. This feature allows the Diagnostic Tester to operate system actuators and send commands to the ECM in addition to displaying system data. The high speed OBD-II data stream typically consists of 50 to 75 data words representing virtually all sensor inputs, actuator outputs, several calculated parameters, many fuel feedback related parameters, and cylinder misfire data. The data is transmitted at a rate of 10.4 Kilo baud, giving the Diagnostic Tester a display refresh rate capability of approximately once every 200 milliseconds. Data is accessed from DLC 3, terminal 2. It is triggered by a communication signal generated by the Diagnostic Tester when any OBD-II function has been selected. On OBD-Il vehicles, the scan tool reads DTCs directly from the serial data stream, therefore, codes are displayed almost instantly. Codes can only be retrieved and displayed using the...

Read Value Using Intelligent Tester Starter Signal

Connect the intelligent tester to the DLC3. Turn the ignition switch ON and turn the tester ON. Select the following menu items DIAGNOSIS ENHANCED OBD II DATA LIST PRIMARY STARTER SIG. READ VALUE USING INTELLIGENT TESTER (STARTER SIGNAL) Connect the intelligent tester to the DLC3. Turn the ignition switch ON and turn the tester ON. Select the following menu items DIAGNOSIS ENHANCED OBD II DATA LIST PRIMARY STARTER SIG.

Abnormal Voltage Output of HO Sensor DTCs P and P

While the ECM is performing active air-fuel ratio control, the air-fuel ratio is forcibly regulated to become rich or lean. If the sensor is not functioning properly, the voltage output variation is small. For example, when the HO2 sensor voltage does not decrease to less than 0.21 V and does not increase to more than 0.59 V during active air-fuel ratio control, the ECM determines that the sensor voltage output is abnormal and sets DTCs P0136 and P0156.

NOTE When alternately grounding terminals Tc and AB release ground from one terminal and immediately ground the other

Terminal AB twice each, in cycles of 1-2 to 1 1-2 seconds (sequence is Tc, AB, Tc, AB). Finally, keep applying body ground to terminal Tc until AIR BAG warning light flashes quickly, indicating DTCs are cleared. Using Toyota Hand-held Tester Connect Toyota hand-held tester to DLC3. DLC3 is located under left side of instrument panel. Clear DTCs by

Can Communication System Check

(a) Check for the output DTC relating to the CAN communication system. HINT The ECU of this system is connected to the CAN communication system. Therefore, before starting troubleshooting, be sure to check that there is no trouble in the CAN communication system. CAN communication system DTC not output CAN communication system DTC output CAN COMMUNICATION SYSTEM CAN COMMUNICATION SYSTEM DTC CHECK* When 2 or more DTCs are detected, perform circuit inspections one by one until the problem is identified.

Read Value Using Intelligent Tester Fuel Trim

Calculate the total fuel trim values to check the characteristic deviation of the mass air flow meter. (a) Connect the intelligent tester to the DLC3. Turn the ignition switch to the ON position. Turn the tester on. Select the following menu items DIAGNOSIS ENHANCED OBD II DATA LIST PRIMARY SHORT FT 1 and LONG FT 1. Read the values displayed on the tester. Add together the SHORT FT 1 and LONG FT 1 values to obtain the total FUEL TRIM. PERFORM ACTIVE TEST USING INTELLIGENT TESTER (OPERATE OCV) (a) Connect the intelligent tester to the DLC3. (d) Select the following menu items DIAGNOSIS ENHANCED OBD II ACTIVE TEST VVT CTRL B1. (a) Connect the intelligent tester to the DLC3. Turn the ignition switch to the ON position. Turn the tester on. Clear the DTCs (See page ES-38). Switch the ECM from normal mode to check mode using the tester (See page ES-41). Start the engine to idle for a minute. OK Read the DTCs. OK

The OBD Diagnostic Circuit

2002 Toyota 4runner Dlc Terminal

Diagnostic Trouble Codes can be displayed using the Diagnostic Tester or by grounding the TE1 circuit and counting the Malfunction Indicator Lamp (MIL) flashes. The scan tool reads codes by counting the low voltage pulses on the W terminal of the Diagnostic Link Connector (DLC). Therefore, code retrieval is a relatively slow process, especially when multiple codes are stored. Diagnostic Trouble Codes can be displayed using the Diagnostic Tester or by grounding the TE1 circuit and counting the Malfunction Indicator Lamp (MIL) flashes. The scan tool reads codes by counting the low voltage pulses on the W terminal of the Diagnostic Link Connector (DLC). Therefore, code retrieval is a relatively slow process, especially when multiple codes are stored.

Check Any Other Dtcs Output In Addition To Dtc Pa Andor Pb

(a) Connect the intelligent tester to the DLC3. (d) Select the following the menu items DIAGNOSIS ENHANCED OBD II DTC INFO CURRENT CODES. (e) Read the DTCs. P050A and or P050B and other DTCs If any DTCs other than P050A and P050B are output, troubleshoot those DTCs first.

NOTE During testing if DTCs other than DTC B are displayed disregard them Diagnostic Procedure

Reconnect air bag sensor assembly connector A19 to air bag sensor assembly. Connect negative battery cable. Wait at least 2 seconds. Turn ignition switch to ON position. Wait at least 20 seconds. Clear DTCs. See CLEARING CODES under DIAGNOSTICS. Turn ignition switch to LOCK position. Wait at least 20 seconds. Turn ignition switch to ON position. Wait at least 20 seconds. Retrieve DTCs. See RETRIEVING CODES under DIAGNOSTICS. If DTC 47-B0115 is not displayed, go to next step. If DTC 47-B0115 is displayed, replace air bag sensor assembly. 4. Turn ignition switch to LOCK position. Disconnect negative battery cable. Wait at least 90 seconds. Reconnect left-side air bag squib connector. Connect negative battery cable. Wait at least 2 seconds. Turn ignition switch to ON position. Wait at least 20 seconds. Clear DTCs. See CLEARING CODES under DIAGNOSTICS. Turn ignition switch to LOCK position. Wait at least 20 seconds. Turn ignition switch to ON position. Wait at least 20 seconds. Retrieve...

NOTE Start the inspection from step in the case of using the Toyota handheld tester and start from step in the case of

Connect the TOYOTA hand-held tester to the DLC3. b. Turn the ignition switch ON and push the TOYOTA hand-held tester main switch ON. c. Select the ACTIVE TEST mode on the TOYOTA hand-held tester. Check that ON and OFF of the SLIP indicator light can be shown on the combination meter with the TOYOTA hand-held tester.

Check Any Other Dtcs Output In Addition To Dtc P

(a) Connect the intelligent tester to the DLC3. (c) Select the following menu items DIAGNOSIS ENHANCED OBD II DTC INFO CURRENT CODES. (d) Read DTCs. P0420 and other DTCs If any DTCs other than P0420 are output, troubleshoot those DTCs first. PERFORM ACTIVE TEST USING INTELLIGENT TESTER (A F CONTROL) Connect the intelligent tester to the DLC3. Start the engine and turn the tester ON. Warm up the engine at an engine speed of 2,500 rpm for approximately 90 seconds. On the tester, select the following menu items DIAGNOSIS ENHANCED OBD II ACTIVE TEST A F CONTROL. To display the graph, select the following menu items on the tester DIAGNOSIS ENHANCED OBD II ACTIVE TEST A F CONTROL USER DATA AFS B1 S1 and O2S B1 S2 then press the YES button and then the ENTER button followed by the F4 button.

Standardization of Service Information and DTCs

Under the provisions of OBD-II regulations, emissions related diagnostic and service information will be readily available to the service industry, from the vehicle manufacturer. This information includes procedures and specifications necessary to diagnose the engine control system. Although enhanced diagnostics may be available using special equipment and procedures, at a minimum, repair procedures will be written using the generic scan tool and other commonly available test equipment like multimeters and oscilloscopes. In an effort to simplify diagnostics, OBD-II requires that all manufacturers standardize DTCs on OBD-II equipped vehicles. Eventually, all emissions related service information will be standardized in format and available through an electronic media.

OBDII OnBoard Diagnostic System Generation Continued

As a result of these technical breakthroughs and because existing I M programs have proven to be less effective than desired in detecting critical emissions control system defects which occur during normal road load operation, a more comprehensive OBD system was developed under the direction of CARB. OBD-II, which is implemented over the 1994 through 1996 model years, adds catalyst efficiency monitoring, engine misfire detection, canister purge system monitoring, secondary air system monitoring, and EGR system flow rate monitoring. Additionally, a serial data stream consisting of twenty basic data parameters and diagnostic trouble codes is a required part of the diagnostic system. In addition to the basic required OBD-II data stream, Toyota has an enhanced data stream which consists of approximately 60 additional data words. Access to all OBD-II data is made by connecting a generic scan tool to a standardized Data Link Connector (DLC) located under the left side of the instrument...

Check Any Other Dtcs Output In Addition To P Or P

(a) Connect an intelligent tester to the DLC3. (d) Select the following menu items DIAGNOSIS ENHANCED OBD II DTC INFO CURRENT CODES. (e) Read DTCs. P2195 or P2196 and other DTCs If any DTCs relating to the A F sensor (DTCs for the A F sensor heater or A F sensor admittance) are output, troubleshoot those DTCs first.

Check Any Other Dtcs Output In Addition To P P P Or P

(a) Connect an intelligent tester to the DLC3. (d) Select the following menu items DIAGNOSIS ENHANCED OBD II DTC INFO CURRENT CODES. (e) Read DTCs. P2195, P2196, P2197 or P2198 and other DTCs If any DTCs other than P2195, P2196, P2197 or P2198 are output, troubleshoot those DTCs first.

Check Any Other Dtcs Output In Addition To Dtc P P P Or P

(a) Connect an intelligent tester to the DLC3. (c) Select the following menu items DIAGNOSIS ENHANCED OBD II DTC INFO CURRENT CODES. (d) Read DTCs. P0171, P0172, P0174 or P0175 and other DTCs If any DTCs other than P0171, P0172, P0174 or P0175 are output, troubleshoot those DTCs first.

Check Any Other Dtcs Output In Addition To Dtc Pa Andor Pa

(a) Connect an intelligent tester to the DLC3. (d) Select the following menu items DIAGNOSIS ENHANCED OBD II DTC INFO CURRENT CODES. (e) Read DTCs. P2A00 and or P2A03 and other DTCs If any DTCs other than P2A00 or P2A03 are output, troubleshoot those DTCs first. (a) Connect an intelligent tester to the DLC3. (c) Select the following menu items DIAGNOSIS ENHANCED OBD II DTC INFO CURRENT CODES. (d) Read DTCs. (a) Connect an intelligent tester to the DLC3. (c) Select the following menu items DIAGNOSIS ENHANCED OBD II DTC INFO CURRENT CODES. (d) Read DTCs.

Read Value Of Intelligent Tester Test Value Of Af Sensor

(a) Connect an intelligent tester to the DLC3. (c) Clear DTCs (See page ES-38). (e) Select the following menu items on the tester DIAGNOSIS ENHANCED OBD II MONITOR INFO MONITOR STATUS. (g) Select the following menu items DIAGNOSIS ENHANCED OBD II MONITOR INFO TEST RESULT RANGE B1S1, then press the ENTER button.

OBDII OnBoard Diagnostic System Generation

Although OBD supplies valuable information about a number of critical emissions related systems and components, there are several important items which were not incorporated into the OBD standard due to technical limitations at the time that the system was phased into production (during the 1988 model year.) Since the introduction of OBD, several technical breakthroughs have occurred. For example, the technology to monitor engine misfire and catalyst efficiency has been developed and implemented on production vehicles.

NOTE When reading DTCs be sure to be seated in the drivers seat and depressing the brake pedal

Fig. 18 Identifying DLC3 Terminal Connector Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. Fig. 18 Identifying DLC3 Terminal Connector Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. If 2 or more trouble codes are identified at the same time, the codes will be displayed in ascending order.

Dtc Check

2002 Toyota Sequoia Ignition Switch

Checking DTCs using intelligent tester. 1. Connect the intelligent tester to the DLC3. Fig. 16 Connecting Intelligent Tester To DLC3 Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. Fig. 16 Connecting Intelligent Tester To DLC3 Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. 3. Read DTCs by following the prompts on the tester screen. Refer to intelligent tester operator's manual for further details.

Toyota Obd Ii C1532

The fail-safe function operates to stop power assist when DTCs indicating ECU malfunctions are output. However, the power assist operation continues when DTC C1534 34 is output because it indicates an EEPROM error in the ECU. (a) Check for DTCs. OK DTCs other than C1531 31, C1532 32, C1533 33, C1534 34 and C1535 35 are not output. REPAIR CIRCUITS INDICATED BY OUTPUT DTCS

Dtc Check Clear

When the diagnosis system is changed from normal mode to check mode or vice versa, all DTCs and freeze frame data recorded in normal mode are erased. Before changing modes, always check and make a note of any DTCs and freeze frame data. HINT DTCs which are stored in the ECM can be displayed on the intelligent tester. The intelligent tester can display current and pending DTCs. Some DTCs are not set if the ECM does not detect the same malfunction again during a second consecutive driving cycle. However, such malfunctions, detected on only one occasion, are stored as pending DTCs. 1. CHECK DTC (Using intelligent tester) (a) Connect the intelligent tester to the DLC3. (d) Select the following menu items DIAGNOSIS ENHANCED OBD II DTC INFO CURRENT CODES or PENDING CODES. 2. CLEAR DTC (Using intelligent tester) (a) Connect the intelligent tester to the DLC3. (d) Select the following menu items DIAGNOSIS ENHANCED OBD II DTC INFO CLEAR CODES. 3. CLEAR DTC (Without using intelligent tester)...

Related Dtcs

DTCs If any EVAP system DTCs are set, the malfunctioning area can be determined using the table below. DTCs If the 0.02 inch leak criterion difference between the first and second checks is greater than the specification, the DTCs corresponding to the leak criterion (P043E, P043F, P2401, P2402 and P2419) will be all stored.

Dtc Checkclear

DTC CHECK (NORMAL MODE) NOTICE When the diagnostic system is switched from the normal mode to the check mode, all the DTCs and freeze frame data recorded in the normal mode will be erased. So before switching modes, always check the DTCs and freeze frame data, and note them down. (a) Checking DTCs using the OBD II scan tool or hand-held tester. Connect the OBD II scan tool or hand-held tester to DLC3. Turn the ignition switch to the ON position. Use the OBD II scan tool or hand-held tester to check the DTCs and freeze frame data and note them down (For operating instructions, see the OBD II scan tool's instruction book). See page 05-372 to confirm the details of the DTCs. When simulating symptoms with an OBD II scan tool (excluding hand-held tester) to check the DTCs, use the normal mode. For codes on the DTCs chart subject to 2 trip detection logic, turn the ignition switch off after the symptom is simulated once. Then repeat the simulation process again. When the problem has been...

How To Proceed With Troubleshooting

'Symptom Confirmation and Diagnostic Trouble Code Check 'Symptom Confirmation and Diagnostic Trouble Code Check Diagnostic Trouble Code Chart Confirm the symptoms and the problem conditions, and check the diagnostic trouble codes. (When the problem symptoms do not appear during confirmation, use the symptom simulation method described later on.) Check the results obtained in Step 2, then confirm the inspection procedure for the system or the part which should be checked using the diagnostic trouble code chart or the problem symptoms table.

Inspection Procedure

Read freeze frame data using the intelligent tester. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air-fuel ratio was lean or rich, and other data, from the time the malfunction occurred. READ OUTPUT DTC (a) Connect the intelligent tester to the DLC3. (b) Turn the ignition switch ON and turn the intelligent tester ON. (c) Select the following menu items DIAGNOSIS ENHANCED OBD II DTC INFO CURRENT CODES. (d) Read DTCs. Result READ VALUE USING INTELLIGENT TESTER (ENGINE COOLANT TEMPERATURE) Connect the intelligent tester to the DLC3. Turn the ignition switch ON. Turn the tester ON. Select the following menu items DIAGNOSIS ENHANCED OBD II DATA LIST PRIMARY COOLANT TEMP. If there is an open circuit, the intelligent tester indicates -40 C (-40 F). If there is a short circuit, the intelligent tester indicates 140 C...

Turbine Speedoutput Speed Reference

Performing the intelligent tester's ACTIVE TEST allows relay, VSV, actuator and other items to be operated without removing any parts. Performing the ACTIVE TEST early in troubleshooting is one way to save time. 3. Connect the intelligent tester to the CAN VIM. Then connect the CAN VIM to the DLC3. 5. Turn the intelligent tester ON. 6. Enter the following menus DIAGNOSIS ENHANCED OBD II ACTIVE TEST. While driving, the shift position can be forcibly changed with the intelligent tester. The shift position commanded by the ECM is shown in the DATA LIST (SHIFT) display on the intelligent tester.

Values Do not depend solely on these reference values when deciding whether a part is faulty or not

Connect the intelligent tester to the CAN VIM. Then connect the CAN VIM to the DLC3. 5. Turn the intelligent tester ON. 6. Enter the following menus DIAGNOSIS ENHANCED OBD II DATA LIST. When DTC P0712 is output and the intelligent tester output is 150 C (302 F) or more, there is a short circuit. When DTC P0713 is output and the intelligent tester output is -40 C (-40 F), there is an open circuit. Measure the resistance between terminal THO1 (OT) and the body ground.

In the table below the values listed under Normal Condition are reference values Do not depend solely on these

Connect the intelligent tester to the CAN VIM. Then connect the CAN VIM to the DLC3. 5. Turn the intelligent tester ON. 6. Enter the following menus DIAGNOSIS ENHANCED OBD II DATA LIST. When DTC P2742 is output and the intelligent tester output is 150 C (302 F) or more, there is a short circuit. When DTC P2743 is output and the intelligent tester output is -40 C (-40 F), there is an open circuit. Measure the resistance between terminal THO2 (OT2) and the body ground.

Typical Malfunction Thresholds Reference

Performing the intelligent tester's ACTIVE TEST allows relay, VSV, actuator and other items to be operated without removing any parts. Performing the ACTIVE TEST early in troubleshooting is one way to save time. 3. Connect the intelligent tester to the CAN VIM. Then connect the CAN VIM to the DLC3. 5. Turn the intelligent tester ON. 6. Enter the following menus DIAGNOSIS ENHANCED OBD II ACTIVE TEST.

Perform the test with the AC OFF

Performing the intelligent tester's ACTIVE TEST allows relay, VSV, actuator and other items to be operated without removing any parts. Performing the ACTIVE TEST early in troubleshooting is one way to save time. b. Connect the intelligent tester to the CAN VIM. Then connect the CAN VIM to the DLC3. e. Turn the intelligent tester ON. f. Enter the following menus DIAGNOSIS ENHANCED OBD II ACTIVE TEST.

OK Standard value to kg to lb NG Go to step Ok Go To Next Step

Clear the DTCs stored in memory (See DTC CHECK CLEAR ). HINT First clear DTCs stored in the occupant classification ECU and then in the center airbag sensor assembly. e. Using the intelligent tester, check the DTCs of the occupant classification ECU (See DTC CHECK CLEAR ).

Toyota Sequoia Limited

The intelligent tester can be used at steps 3, 4, 6, 7. 3. DTCS AND FREEZE FRAME DATA CHECK AND CLEARANCE See DTC CHECK CLEAR . B PROBLEM SYMPTOM SIMULATION A GO TO NEXT STEP. 5. DTC CHECK See DTC CHECK CLEAR . See DIAGNOSTIC TROUBLE CODE CHART . When 2 or more DTCs are detected, perform circuit inspections one by one until the problem is identifies.

Check Center Airbag Sensor Assembly

Connect the negative (-) terminal cable to the battery, and wait for at least 2 seconds. Turn the ignition switch to the ON position, and wait for at least 60 seconds. Clear the DTCs stored in memory (See DTC CHECK CLEAR ). Turn the ignition switch to the LOCK position. Turn the ignition switch to the ON position, and wait for at least 60 seconds. Check the DTCs (See DTC CHECK CLEAR ).

Typical Enabling Conditions

Monitor runs whenever following DTCs not present Read freeze frame data using an intelligent tester. Freeze frame data record the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air-fuel ratio was lean or rich, and other data, from the time the malfunction occurred.

Confirmation Driving Pattern

Connect the intelligent tester to the DLC3. In order to store misfire DTCs, it is necessary to drive the vehicle for the period of time shown in the table below, with the MISFIRE RPM and MISFIRE LOAD in the DATA LIST. 8. Check whether misfires have occurred by checking for DTCs and freeze frame data. HINT

Problem Symptoms Table

If there are no DTCs output but the problem still occurs, check the circuits for each problem symptom in the order given in the table below and proceed to the relevant troubleshooting page. NOTICE 5. Check the brake actuator assembly with the intelligent tester. (Check brake actuator assembly operation using the active test function) 5. Check the brake actuator assembly with the intelligent tester. (Check brake actuator assembly operation using the active test function) ABS sensor DTC check cannot be done

Check Abs Warning Light

When using the intelligent tester 1. Connect the intelligent tester to the DLC3. 2. Turn the ignition switch to the ON position and intelligent tester main switch ON. 3. Select the ACTIVE TEST mode on the intelligent tester. 4. Check that 2 ON and OFF of the ABS warning light can be shown on the combination meter with the intelligent tester.

Check Brake Warning Light

Connect the intelligent tester to the DLC3. b. Turn the ignition switch to the ON position and intelligent tester main switch ON. c. Select the ACTIVE TEST mode on the intelligent tester. d. Check that ON and OFF of the BRAKE warning light can be shown on the combination meter with the intelligent tester.

ETurn the ignition switch to OFF

Intelligent Tester Displays If no DTCs in PENDING CODE after performing this test, system functioning normally Intelligent Tester Displays If no DTCs in PENDING CODE after performing this test, system functioning normally Refer to inspection procedure for secondary air injection system DTCs Refer to inspection procedure for secondary air injection system DTCs

Read Value Of Data List Speed Sensor

Connect the intelligent tester to the DLC3. b. Turn the ignition switch to the ON position and push the intelligent tester main switch ON. c. Select DATA LIST mode on the intelligent tester. d. Check that there is no difference between the speed value output from the speed sensor displayed by the intelligent tester and the speed value displayed by the speedometer when driving the vehicle.

NOTE Connect test leads from the back side of the connector The connectors should not be disconnected from the ECM

Connect a intelligent tester to the Controller Area Network Vehicle Interface Module (CAN VIM). Then connect the CAN VIM to the Date Link Connector 3 (DLC3). Fig. 62 Connecting Intelligent Tester To Controller Area Network Vehicle Interface Module (CAN VIM) To Date Link Connector 3 (Dlc3) Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. Fig. 62 Connecting Intelligent Tester To Controller Area Network Vehicle Interface Module (CAN VIM) To Date Link Connector 3 (Dlc3) Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. The illustration may slightly differ from the display on the intelligent tester. The waveform of the A F sensor is displayed only on the intelligent tester.

List Of Operation Methods

DTC Check (Sensor Check) (continuous operation) DTC Check (Sensor Check) (step operation) DTC Check (Sensor Check) (stepped operation) 2. CHECK DLC3 (a) The vehicle's ECM uses CAN and the ISO 9141-2 for communication protocol. The terminal arrangement of the DLC3 complies with SAE J1962 and meets the ISO 9141-2 format. HIGH-level CAN bus line HIGH-level CAN bus line HIGH-level CAN bus line LOW-level CAN bus line LOW-level CAN bus line If the display shows a communication error message when you have connected the cable of the intelligent tester to the DLC3, turned the ignition switch ON and operated the tester, there is a problem on the vehicle side or tool side. If the communication is normal when the tool is connected to another vehicle, inspect the DLC3 on the original vehicle.

Check For Intermittent Problems

Inspect the vehicle's ECM using check mode. Intermittent problems are easier to detect with the intelligent tester when the ECM is in check mode. In check mode, the ECM uses 1 trip detection logic, which is more sensitive to malfunctions than normal mode (default), which uses 2 trip detection logic. 1. Clear the DTCs (See page ES-38). 2. Switch the ECM from normal mode to check mode using the intelligent tester (See page ES-41).

Sienna Ac Low Pressure 2000

Toyota Sienna Air Conditioning Diagram

Read value of TOYOTA hand-held tester. PREPARATION a. Connect the TOYOTA hand-held tester to the DLC3. b. Turn the ignition switch ON and push the TOYOTA hand-held tester main SW ON. CHECK Select the item A C SIG in the DATA LIST and read its value displayed on the TOYOTA handheld tester. NG Replace magnetic clutch relay. OK Go to next step. 3. Read value of TOYOTA hand-held tester. a. Connect the TOYOTA hand-held tester to the DLC3. b. Turn the ignition switch ON and push the TOYOTA hand-held tester main SW ON. CHECK Select the item A C MAG CLUTCH in the DATA LIST and read its value displayed on the TOYOTA hand held tester.

Perform Zero Point Calibration

Connect the intelligent tester to the DLC3. d. Using the intelligent tester, perform Zero point calibration (See INITIALIZATION ). OK The COMPLETED is displayed. a. Using the intelligent tester, perform Sensitivity check (See INITIALIZATION ). When DTC B1650 32 is detected as a result of troubleshooting for the supplemental restraint system, check the DTCs stored in the occupant classification ECU. When DTC B1783 is output, perform troubleshooting for the DTC.

Fuel Pump Onvehicle Inspection

Filter Gorivo Seat

(a) Connect the TOYOTA hand-held tester to the DLC3. (b) Turn the ignition switch ON and TOYOTA hand-held tester main switch ON. (c) Select the active test mode on the TOYOTA hand-held tester. (d) Please refer to the TOYOTA hand-held tester operator's manual for further details. e If you have no TOYOTA hand-held tester, connect the positive +) lead from the battery to terminal 4 of the connecter, and the negative (- lead to terminal 5. (h) Disconnect the TOYOTA hand-held tester from the DLC3. (i) Connect the TOYOTA hand-held tester to the DLC3. If you have no TOYOTA hand-held tester, connect the positive (+) lead from the battery to terminal 4 of the connecter, and the negative -) lead to terminal 5. (j) Measure the fuel pressure. Fuel pressure If pressure is high, replace the fuel pressure regulator. If pressure is low, check the Fuel hoses and connections, Fuel pump, Fuel filter, and Fuel pressure regulator, (k) Disconnect the TOYOTA hand-held tester from the DLC3. (I) Start the...

TC and CG Terminal Circuit

Dlc3 2004 Avalon

Connecting terminals TC and CG of the DLC3 causes the system to enter self-diagnostic mode. If a malfunction is present, DTCs will be output. When a particular warning light remains blinking, a ground short in the wiring of terminal TC of the DLC3 or an internal ground short in the relevant ECU is suspected. D20 DLC3 D20 DLC3 CHECK WIRE HARNESS (TC of DLC3 - ECM) REPAIR OR REPLACE HARNESS OR CONNECTOR (DLC3 - ECM) CHECK WIRE HARNESS (CG of DLC3 - BODY GROUND) REPAIR OR REPLACE HARNESS OR CONNECTOR (DLC3 - BODY GROUND) CHECK WIRE HARNESS (TC of DLC3 - BODY GROUND)

Inspect Intake Air Control Valve Assembly

(a) Inspection procedure when using the intelligent tester Connect the intelligent tester to the DLC3. Turn the ignition switch on (IG). Turn the tester on. Select the following menu items DIAGNOSIS ENHANCED OBD II ACTIVE TEST INTAKE CTL VSV1. Press the right or left button. Make sure that a clicking sound is heard from the intake air control valve when current flows. If the result is not as specified, replace the intake air surge tank.

Dtc B Short In Driver Side Squib Circuit Dtc B Open In Driver Side Squib Circuit Dtc B Short To Gnd In Driver Side

The D squib circuit consists of the center airbag sensor assembly, the spiral cable and the steering wheel pad. The circuit instructs the SRS to deploy when deployment conditions are met. These DTCs are recorded when a malfunction is detected in the D squib circuit. DIAGNOSTIC TROUBLE CODE CHART

Where Is The Dlc On A Toyota Yaris

Dlc3 Yaris

(a) The ECU uses ISO 15765-4 for communication. The terminal arrangement of the DLC3 complies with SAE J1962 and matches the ISO 15765-4 format. CAN bus line HIGH-level CAN bus line LOW-level CAN bus line HIGH-level CAN bus line LOW-level CAN bus line '( Intelligent Tester '( Intelligent Tester DLC3 DLC3 Intelligent Tester Intelligent Tester DLC3 DLC3 If the result is not as specified, the DLC3 may have a malfunction. Repair or replace the harness and connector. Connect the cable of the intelligent tester to the CAN VIM, connect the CAN VIM to the DLC3, turn the ignition switch ON and attempt to use the tester. If the display indicates that a communication error has occurred, there is a problem either with the vehicle or with the tester. If communication is normal when the tester is connected to another vehicle, inspect the DLC3 of the original vehicle.

Engine Immobilizer System

Engine immobilizer system may also be referred to as Hybrid Vehicle (HV) immobilizer system. Engine immobilizer system is a theft deterrent system that disables hybrid system and prevents engine from starting by not allowing fuel injector and ignition system operation unless ignition key identification code matches code stored in Hybrid Vehicle (HV) control Electronic Control Unit (ECU). Hybrid vehicle control ECU is referred to as HV ECU.

System Description

(1) The main wire is a wire harness between the two terminus circuits on the bus (communication line). This is the main bus in the CAN communication system. (1) The terminus circuit is a circuit which converts the communication current of the CAN communication into the bus voltage. It consists of a resistor and condenser. Two terminus circuits are necessary on a bus. (1) The CAN J C is a junction designed for CAN communication. 3. ECUs OR SENSORS WHICH COMMUNICATE VIA CAN COMMUNICATION SYSTEM 4. DIAGNOSTIC CODES FOR CAN COMMUNICATION SYSTEM (a) DTCs for the CAN communication system are as follows U0073, U0100, U0105, U0121, U0129 and B1499. (a) Trouble in the CAN bus (communication line) can be checked through the DLC3 (except when there is a wire break other than in the branch wire of the DLC3). Do not connect the tester directly to the DLC3 connector. Be sure to use a service wire. (b) DTCs regarding the CAN communication system can be checked using the intelligent tester via the...

Ng Replace Spiral Cable

The P squib circuit consists of the center airbag sensor assembly and the front passenger airbag assembly. The circuit instructs the SRS to deploy when deployment conditions are met. These DTCs are recorded when a malfunction is detected in the P squib circuit. DIAGNOSTIC TROUBLE CODE CHART

Read Value Of Data List Delta S Sensor

Connect the intelligent tester to the DLC3. The result appears on the tester after some delay because a time lag occurs in measurement with a intelligent tester. e. Check that the brake pedal acceleration value of the delta S sensor displayed on the intelligent tester changes, alternatively increasing the brake pedal stroke. Fig. 62 Checking That Brake Pedal Acceleration Value Of Delta S Sensor Displayed On Intelligent Tester Changes, Alternatively Increasing Brake Pedal Stroke Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. Fig. 62 Checking That Brake Pedal Acceleration Value Of Delta S Sensor Displayed On Intelligent Tester Changes, Alternatively Increasing Brake Pedal Stroke Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

Ignition timing to BTDC at idle Transmission in neutral

Sequoia Neutral Off

SST 09843-18040 b. Inspect engine idle speed (When using a intelligent tester). 1. Connect a intelligent tester to the Controller Area Network Vehicle Interface Module (CAN VIM). Then connect the CAN VIM to the Date Link Connector 3 (DLC3). 2. Please refer to the intelligent tester operator's manual for further details. 5. Disconnect the intelligent tester and CAN VIM from the DLC3. Fig. 5 Connecting CAN VIM To Date Link Connector 3 Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. Fig. 5 Connecting CAN VIM To Date Link Connector 3 Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. c. Inspect engine idle speed (When not using a intelligent tester). 1. Using SST, connect the tachometer probe to terminal TAC of the DLC3. 4. Disconnect the tachometer from the DLC3. Fig. 6 Connecting Tachometer Probe To Terminal TAC Of DLC3 Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. Fig. 6 Connecting Tachometer Probe To Terminal TAC Of DLC3 Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

NOTE Cancellation cannot be done by removing the battery cable or ECUIG fuse

Toyota Sequoia 2001 4x4 Sensors Vsc Trac

In case of using TOYOTA hand-held tester Clear the DTC. 1. Hook up the TOYOTA hand-held tester to the DLC3. Fig. 11 Locating DLC3 Connector With Hand-Held Tester 3. Operate the TOYOTA hand-held tester to erase the codes. NOTE Please refer to the TOYOTA hand-held tester operator's manual for further details. 2. In case of not using TOYOTA hand-held tester SENSOR CHECK (TEST MODE) 3. Using SST, connect terminals Ts and CG of DLC3.

Data Link Connector

Toyota Dlc Connector

The vehicle's ECM uses the ISO 15765-4 for communication protocol. The terminal arrangement of the DLC3 complies with SAE J1962 and matches the ISO 15765-4 format. Connect the cable of the intelligent tester to the DLC3, turn the ignition switch ON and attempt to use the intelligent tester. If the screen displays a communication error message, a problem exists in the vehicle side or the tester side. If communication is normal when the tool is connected to another vehicle, inspect the DLC3 on the original vehicle. Fig. 20 Identifying Data Link Connector 3 (DLC3) Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. Fig. 20 Identifying Data Link Connector 3 (DLC3) Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. HIGH-level CAN bus line HIGH-level CAN bus line HIGH-level CAN bus line LOW-level CAN bus line LOW-level CAN bus

Check voltage between terminal TS and CG of Dlc Check

Terminal Repair Software

Measure voltage between terminal TS and CG of DLC3. Fig. 118 Measuring Voltage B W TS & CG Terminal Of DLC3 Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. Fig. 118 Measuring Voltage B W TS & CG Terminal Of DLC3 Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. 2. Check for open and short circuit in harness and connector between skid control ECU and DLC3, DLC3 and the body ground (See HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE ).

Read Value Of Data List Yaw Rate Sensor

Yaw Sensor

Connect the intelligent tester to the DLC3. c. Turn the ignition switch to the ON position and push the intelligent tester main switch ON. d. Select DATA LIST mode on the intelligent tester. e. Check that the decelerate value of the deceleration sensor displayed on the intelligent tester changes Place the deceleration sensor vertically to the ground and turn the sensor to the front-ward and rearward.

NOTE If a DTC other than DTC B is displayed at same time as DTC B repair fault indicated by DTC other than DTC B before

Reconnect air bag sensor assembly connectors. Reconnect negative battery cable. Turn ignition switch to ON position. Clear DTCs. See CLEARING CODES under DIAGNOSTICS. Turn ignition switch to LOCK position. Wait at least 20 seconds. Turn ignition switch to ON position. Wait at least 20 seconds. Retrieve DTCs. See RETRIEVING CODES under DIAGNOSTICS. If DTC 24-B1135 is displayed, go to next step. If DTC 24-B1135 is not displayed, system is functioning properly at this time. Check for intermittent fault. See AIR BAG WARNING LIGHT INTERMITTENT .

DTC chart of ABS system

DIAGNOSTIC TROUBLE CODE CHART There is a possibility that the intelligent tester cannot be used when the ABS warning light is always ON. DTC chart of VSC system DIAGNOSTIC TROUBLE CODE CHART 5. CAN communication system There is a possibility that the intelligent tester cannot be used when the VSC TRAC warning light is always ON.

If the steering angle sensor has been replaced drive the vehicle straight ahead at a speed of mph kmh or more to

Start the inspection from step 1 when using the intelligent tester and start from step 2 when not using the intelligent tester. a. Connect the intelligent tester to the DLC3. b. Turn the ignition switch to the ON position and push the intelligent tester main switch ON. d. Select DATA LIST mode on the intelligent tester. e. Check that the steering wheel turning angle value of the steering angle sensor displayed on the intelligent tester changes when turning the steering wheel. a. Check DTC (See DTC CHECK CLEAR ).

Also be referred to as variable valve timing actuator or VVT controller

Camshaft Sensor 1kz

When engine is idling, intake camshaft valve timing is set at the standard or hold position to stabilize the idle and obtain better fuel economy. During light engine load, intake camshaft valve timing remains retarded to provide stable engine operation. During medium engine load, intake camshaft valve timing is advanced to provide increased performance, fuel economy and improved emission control. During heavy engine load in low-to-medium-speed range, intake camshaft valve timing is advanced to provide increased torque. During heavy engine load in high-speed range, intake camshaft valve timing is retarded to provide improved high-speed range operation and better fuel economy. During cold temperatures, intake camshaft valve timing remains at the standard or hold position to stabilize fast idle speed and obtain better fuel economy. When engine is started or stopped, intake camshaft valve timing is set at retarded position to improve engine starting. If a problem exists in the VVT system,...

Check Trac Off Indicator Light

Connect the intelligent tester to the DLC3. b. Turn the ignition switch to the ON position and push the intelligent tester main switch ON. c. Select ACTIVE TEST mode on the intelligent tester. d. Check that ON and OFF of the TRAC OFF indicator light can be shown on the combination meter with the intelligent tester.

Replace Skid Control Ecu Dtc C Ecm Communication Circuit Malfunction Description

Toyota Majesta Skid Control Ecu Location

This circuit is used to send TRAC and VSC control information from the skid control ECU to the ECM (CAN communication system) and engine control information from the ECM to the skid control ECU (CAN communication system). The skid control ECU and ECM are connected to each other via the translate ECU using the CAN communication system. a. Check engine control system (See DTC CHECK CLEAR ). a. Check DTC of the translate ECU (See DTC CHECK CLEAR ). a. Clear the DTC (See DTC CHECK CLEAR ). A REPAIR CIRCUITS INDICATED BY OUTPUT DTCS The steering angle sensor signal is sent to the skid control ECU via the CAN communication system. When there is a malfunction in the communication system, the DTCs will be detected by the diagnosis function. CAN communication system

Yaris Power Steering Wiring Diagram

Toyota Vitz Ecu Wiring Diagram

INSPECT CAN COMMUNICATION SYSTEM (a) Using the intelligent tester, check for DTCs and confirm that there are no problems in the CAN communication system. OK DTCs are not output. GO TO CAN COMMUNICATION SYSTEM (a) Connect the intelligent tester to the DLC3. (c) Select the item IG SUPPLY in the DATA LIST and read value displayed on the intelligent tester.

How To Reset Fail Safe Mode On 2003 Toyota Camry

When this DTC, or other DTCs relating to ETCS (Electronic Throttle Control System) malfunctions, are set, the ECM enters fail-safe mode. During fail-safe mode, the ECM cuts the current to the throttle actuator off, and the throttle valve is returned to a 6 throttle angle by the return spring. The ECM then adjusts the engine output by controlling the fuel injection (intermittent fuel-cut) and ignition timing, in accordance with the accelerator pedal opening angle, to allow the vehicle to continue at a minimal speed. If the accelerator pedal is depressed gently, the vehicle can be driven slowly. Fail-safe mode continues until a pass condition is detected, and the ignition switch is then turned off.

Monitor Description

These DTCs indicate an open or short in the automatic transmission fluid (ATF) temperature sensor (TFT sensor) circuit. The automatic transmission fluid (ATF) temperature sensor converts ATF temperature to an electrical resistance value. Based on the resistance, the ECM determines the ATF temperature, and the ECM detects an opens or shorts in the ATF temperature circuit. If the resistance value of the ATF The ATF temperature can be checked on the OBD II scan tool or intelligent tester display. MONITOR STRATEGY Related DTCs The monitor will run whenever these DTCs are not present.

Check Ignition Timing

Toyota Sst 09843 18040

Inspect ignition timing (When using a intelligent tester). 1. Connect a intelligent tester to the Controller Area Network Vehicle Interface Module (CAN VIM). Then connect the CAN VIM to the Date Link Connector 3 (DLC3). 2. Please refer to the intelligent tester operator's manual for further details. Ignition timing 5 to 15 BTDC at idle (Transmission in neutral) 3. Disconnect the intelligent tester and CAN VIM from the DLC3. c. Inspect ignition timing (When not using a intelligent tester). 2. Using SST, connect terminals TC and CG of the DLC3. SST 09843-18040 Fig. 3 Connecting Terminals TC & CG Of DLC3 Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. Fig. 3 Connecting Terminals TC & CG Of DLC3 Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

Replace Main Body Ecu

When the ignition switch is ON, the center airbag sensor assembly communicates the status of the front seat inner belt assembly LH to the main body ECU using the CAN communication line. The main body ECU receives signals from the center airbag sensor assembly and transmits them to the combination meter assembly. When the seat belt is unfastened, the combination meter assembly flashes the driver seat belt warning light in the combination meter assembly. When the seat belt is fastened, the combination meter assembly stops flashing the front driver seat belt warning light. CAN Communication Line

Deceleration sensors andor the ECU perform zero point calibration of the master cylinder pressure yaw rate and

If the ignition switch is turned from the ON to the ACC or LOCK position in test mode, test mode DTCs will be erased. 3. Using SST, connect terminals TS and CG of the DLC3. SST 09843-18040 Fig. 5 Identifying DLC3 Connector Terminals Fig. 5 Identifying DLC3 Connector Terminals

Yaris 2007 Emergency Brake And Abs Li

2007 Toyota Hybrid Battery Terminal

END SENSOR CHECK (USING INTELLIGENT TESTER) 4. READ SIGNAL CHECK FUNCTION DTCS (USING INTELLIGENT TESTER) See the list of DTCs (refer to step 9). (e) Using SST, connect terminals TS and CG of the DLC3. Do not drive the vehicle at a speed of 50 mph (80 km h) or more after the ABS warning light turns off, because test mode DTCs are set again when the vehicle speed exceeds 50 mph (80km h). 8. READ SIGNAL CHECK FUNCTION DTCS (USING SST CHECK WIRE) (a) Using SST, connect terminals TC and CG of the DLC3. See the list of DTCs (refer to step 9).

Data List Active Test

With the intelligent tester connected to the DLC3 and the ignition switch on (IG), the ABS, TRAC and VSC data list can be displayed. Follow the prompts on the intelligent tester screen to access the DATA LIST. Performing the ACTIVE TEST using the intelligent tester allows the relay, actuator, etc. to operate without removing any parts. Performing the ACTIVE TEST as the first step of troubleshooting is one of the methods to shorten labor time. (a) Connect the intelligent tester to the DLC3. The ignition switch must be turned on (IG) to proceed to the ACTIVE TEST using the intelligent tester.

Do It Yourself Car Diagnosis

Do It Yourself Car Diagnosis

Don't pay hundreds of dollars to find out what is wrong with your car. This book is dedicated to helping the do it yourself home and independent technician understand and use OBD-II technology to diagnose and repair their own vehicles.

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