[17] ENGINE AND EMISSION CONTROL - - ENGINE CONTROL - SYMPTOM PROCEDURES - Inspection Procedure 2: Throttle Valve will not Fully Open or Close <4G69-L.H. drive vehicles> | PRINT PAGE / INDEX / PRIOR / NEXT

Inspection Procedure 2: Throttle Valve will not Fully Open or Close <4G69-L.H. drive vehicles>
DIAGNOSIS PROCEDURE
STEP 1. Check the accelerator cable adjustment. Q: Is the accelerator cable properly adjusted? YES: Go to Step 2. NO: Adjust the accelerator cable (Refer to ). Then go to Step 5.
STEP 2. Check the accelerator pedal position sensor assembly. Check that the lever of the accelerator pedal position sensor assembly moves smoothly by moving it by hand. Q: Does the lever of the accelerator pedal position sensor assembly move smoothly? YES: Go to Step 3. NO: Replace the accelerator pedal position sensor assembly (Refer to ). Then go to Step 5.
STEP 3. Check the accelerator pedal position sensor assembly. Refer to GROUP 13C, On-vehicle Service . Q: Is the accelerator pedal position sensor assembly normally? YES: Go to Step 4. NO: Replace the accelerator pedal position sensor assembly (Refer to ). Then go to Step 5.
STEP 4. Check the Throttle valve (Throttle valve control servo). Refer to GROUP 13C, On-vehicle Service . Q: Is the throttle valve control servo normally? YES: Go to Step 5. NO: Cleaning the throttle body (Refer to GROUP 13C, On-vehicle Service ), or replace the throttle body assembly (Refer to GROUP 13C, Throttle Body ). Then go to Step 5.
STEP 5. Retest the system. Q: Does the throttle valve fully open and close? YES: The procedure is complete. NO: Return to Step 1.

[17] ENGINE AND EMISSION CONTROL - - ENGINE CONTROL - SYMPTOM PROCEDURES - Inspection Procedure 2: Throttle Valve will not Fully Open or Close <4G69-L.H. drive vehicles> | PRINT PAGE / INDEX / PRIOR / NEXT

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