Read Value Of Intelligent Tester Fuel Trim

HINT:

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.

Total of the SHORT FT #1 and LONG FT #1 values is between -20 % and 20 %.

Go to step 14

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.

Using the tester, turn off the purge VSV (EVAP VSV: OFF).

Use your finger to confirm that the purge VSV has no suction.

Purge VSV has no suction.

Using the tester, turn on the purge VSV (EVAP VSV: ON).

Use your finger to confirm that the purge VSV has suction.

Purge VSV has suction.

Go to step 9

PERFORM ACTIVE TEST USING INTELLIGENT TESTER (OPERATE OCV)

(a) Connect the intelligent tester to the DLC3.

(b) Start the engine and turn the tester ON.

(d) Select the following menu items: DIAGNOSIS / ENHANCED OBD II / ACTIVE TEST / VVT CTRL B1.

Go to step 10

CHECK PCV HOSE CONNECTIONS

PCV hose is connected correctly and is not damaged.

Go to step 11

CHECK AIR INDUCTION SYSTEM

(a) Check the air induction system for vacuum leakage. OK:

No leakage from air induction system.

Go to step 12

7

CHECK AIR CLEANER FILTER ELEMENT SUB-ASSEMBLY

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Go to step 13

L^OkJ

8

REPLACE MASS AIR FLOW METER

NEXT>

Go to step 19

9

REPLACE PURGE VSV

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Go to step 19

10

CHECK AND REPAIR VVT SYSTEM

NEXT>

Go to step 19

11

REPAIR OR REPLACE PCV HOSE

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Go to step 19

12

REPAIR OR REPLACE AIR INDUCTION SYSTEM

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Go to step 19

13

REPLACE AIR CLEANER FILTER ELEMENT SUB-ASSEMBLY

NEXT>

Go to step 19

READ VALUE OF INTELLIGENT TESTER (ENGINE SPD)

Go to step 17

CHECK THROTTLE VALVE

(a) Check for deposits around the throttle valve and throttle valve condition. OK:

No deposits around the throttle valve and throttle valve moves smoothly

Go to step 18

16

REPLACE ECM

NEXT>

Go to step 19

17

REPAIR OR REPLACE CRANKSHAFT POSITION SENSOR CIRCUIT

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Go to step 19

18

REPAIR OR REPLACE THROTTLE BODY ASSEMBLY

NEXT>

Go to step 19

19

CHECK WHETHER DTC OUTPUT RECURS (DTC P050A AND/OR P050B)

NOTICE:

In this operation, the engine must be cold (the same level as the engine coolant temperature recorded in the freeze frame data).

(a) Connect an intelligent tester to the DLC3.

(b) Turn the ignition switch to ON.

(e) Switch the ECM from normal mode to check mode using the tester (See page ES-41).

(f) Start the engine to idle for a minute. OK:

Stable fast idling.

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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