Toyota Carina Fuses

Fig. 52: Measuring Voltage Between Terminals VYS(27) & GND(15, 46) Of Skid Control

OK: Check and replace skid control ECU.

NG: GO TO NEXT STEP.

4. Check for open and short circuit in harness and connector between YAW RATE SENSOR AND SKID CONTROL ECU .

NG: Repair or replace harness or connector.

OK: Check and replace skid control ECU.

DTC C1241 / 41: IG POWER SOURCE CIRCUIT CIRCUIT DESCRIPTION

2001 BRAKES ABS With EBD & Trac & VSC System - Diagnostics - Sequoia

DTC No

DTC Detecling Condition

Trouble Area

C1241 M1

1. LCU terminal IG1 voltage is loo low tor a fixed time during driving

2, ECU terminal IG1 voltage is loo high for a fixed time while ignition switch is ON.

• Charging system

• Rower source circuit

Fig. 53: DTC C1241 / 41 IG Power Source Circuit Description Table

WIRING DIAGRAM

2001 Toyota Sequoia Fuse Diagram
Fig. 54: DTC C1241 / 41 IG Power Source Wiring Diagram INSPECTION PROCEDURE 1. Check ECU-IG fuse. PREPARATION:

Remove ECU-IG fuse from the instrument panel J/B.

2001 BRAKES ABS With EBD & Trac & VSC System - Diagnostics - Sequoia

CHECK:

Check continuity of ECU-IG fuse. OK:

Continuity

Toyota Carina Sulakkeet

Fig. 55: Locating ECU-IG Fuse

Ecu 2002 Toyota Sequoia

Fig. 55: Locating ECU-IG Fuse

2001 BRAKES ABS With EBD & Trac & VSC System - Diagnostics - Sequoia

NG: Check for short circuit in all the harness and components connected to ECU-IG fuse (See attached wiring diagram).

OK: GO TO NEXT STEP.

2. Check battery position voltage.

NG: Check and repair the charging system. OK: GO TO NEXT STEP.

3. Check voltage of the ECU IG power source.

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 DATALIST mode on the TOYOTA hand-held tester.

CHECK:

Check the voltage condition output from the ECU displayed on the TOYOTA hand-held tester. OK:

"Normal" is displayed.

In case of not using the TOYOTA hand-held tester: PREPARATION:

Disconnect the skid control ECU connector.

CHECK:

a. Turn the ignition switch ON.

b. Measure voltage between terminals IG (44) and GND (15, 46) of skid control ECU harness side connector.

2001 BRAKES ABS With EBD & Trac & VSC System - Diagnostics - Sequoia

Fuse Panel Toyota Sequoia
Fig. 56: Measuring Voltage Between Terminals IG (44) & GND (15, 46) Of Skid Control ECU Harness Side Connector

OK: Check and replace skid control ECU. NG: GO TO NEXT STEP. 4. Check continuity between terminal GND of skid control ECU connector and body ground.

CHECK:

Measure resistance between terminal GND (15, 46) of skid control ECU harness side connector and body ground.

Resistance: 1 ohm or less

2001 BRAKES ABS With EBD & Trac & VSC System - Diagnostics - Sequoia

Fuse Panel Toyota Sequoia
Fig. 57: Measuring Resistance Between Terminal GND (15, 46) Of Skid Control ECU Harness Side Connector & Body Ground

NG: Repair or replace harness or connector.

OK: Check for open circuit in harness and connector between SKID CONTROL ECU AND BATTERY.

DTC C1249 / 49: STOP LIGHT SWITCH CIRCUIT CIRCUIT DESCRIPTION

DTC No.

DTC Detecling Condition

Trouble Area

C1249 / 49

ECU terminal STP voitage is tow when both ignition switch and stop light switch are ON,

• Stop light switch

• Slop light switch circuit

G02810213

G02810213

Fig. 58: DTC C1249 / 49 Stop Light Switch Circuit Description WIRING DIAGRAM

2001 BRAKES ABS With EBD & Trac & VSC System - Diagnostics - Sequoia

C1249 Brake Light Switch Open Circuit
Fig. 59: DTC C1249 / 49 Stop Light Switch Wiring Diagram INSPECTION PROCEDURE

1. Check operation of the stop light switch. CHECK:

2001 BRAKES ABS With EBD & Trac & VSC System - Diagnostics - Sequoia

Check that the stop light lights up when brake pedal is depressed and turns OFF when the brake pedal is released.

NG: Repair stop light circuit (See STOP LIGHT CIRCUIT ). OK: GO TO NEXT STEP. 2. Check voltage between terminal STP of skid control ECU and body ground.

PREPARATION:

Disconnect skid control ECU connector.

CHECK:

Measure voltage between terminal STP (23) of skid control ECU harness side connector and body ground when the brake pedal is depressed.

Fuse Panel Toyota Sequoia
Fig. 60: Measuring Voltage Between Terminal STP (23) Of Skid Control ECU Harness Side Connector And Body Ground

2001 BRAKES ABS With EBD & Trac & VSC System - Diagnostics - Sequoia

OK: Check and replace skid control ECU.

NG: GO TO NEXT STEP.

3. Check for open circuit in harness and connector between SKID CONTROL ECU AND STOP LIGHT SWITCH .

NG: Repair or replace harness or connector.

OK: Proceed to next circuit inspection shown on PROBLEM SYMPTOMS TABLE . DTC C1251 / 51: ABS & VSC PUMP MOTOR LOCK CIRCUIT DESCRIPTION

CIRCUIT DESCRIPTION

DTC No.

DTC Detecting Condition

Trouble Area

C1251 /51

Pump motor does not operate during the initial check.

ABS & VSC motor

WIRING DIAGRAM

WIRING DIAGRAM

Sw20 Power Steering Pump Wiring Diagram
Fig. 61: DTC C1251 / 51 ABS & VSC Pump Motor Lock Wiring Diagram INSPECTION PROCEDURE

2001 BRAKES ABS With EBD & Trac & VSC System - Diagnostics - Sequoia

1. Check the DTC once more. PREPARATION:

b. Turn the ignition switch OFF.

CHECK:

Turn the ignition switch ON, and check if the same DTC is stored in the memory.

NO: No problem.

YES: Check and replace skid control ECU. DTC C1310 / 11: ACTIVE BRAKE BOOSTER SOLENOID CIRCUIT CIRCUIT DESCRIPTION

DTC No.

DTC Detecting Condition

Trouble Area

C1310/11

Open or short in active brake booster solenoid circuit.

• Brake booster

•Active brake booster solenoid circuit

Fig. 62: DTC C1310 / 11 Active Brake Booster Solenoid Circuit Description WIRING DIAGRAM

Diagram Solenoid Warn
Fig. 63: DTC C1310 / 11 Active Brake Booster Solenoid Wiring Diagram

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