Off Vehicle Inspection

1. CLEAN THROTTLE BODY.
- Using a soft brush and carburetor cleaner clean the cast parts.





- Using compressed air, clean all the passages and apertures.

NOTICE: To prevent deterioration, do not clean the throttle position sensor and DP.





2. INSPECT THROTTLE VALVE AND THROTTLE POSITION SENSOR.
- Inspect throttle valve.
- Check that there is no clearance between the throttle stop screw and throttle lever when the throttle valve is fully closed.





- Inspect throttle position sensor.
- Insert a 0.40 mm (0.016 in) or 0.65 mm (0.026 in) feeler gauge between the throttle stop screw and stop lever.








- Using an ohmmeter, measure the resistance between each terminal.
- If necessary, adjust throttle position sensor.





- Loosen the 2 set screws of the throttle position sensor.





- Insert a 0.40 mm (0.016 in) feeler gauge between the throttle stop screw and stop lever.
- Connect the tester probes of an ohmmeter to terminals IDL1 and E2 of the throttle position sensor.





- Gradually turn the throttle position sensor clockwise until the ohmmeter deflects, and secure it with the 2 set screws.








- Recheck the continuity between terminals IDL1 and E2.





3. w/ TRAC:
INSPECT SUB-THROTTLE ACTUATOR, SUB-THROTTLE VALVE AND SUB-THROTTLE POSITION SENSOR.





- Inspect sub-throttle actuator.
- Using an ohmmeter, measure the resistance between the terminals (ACM - A and A-, BCM - B and B-).

Resistance: 0.5 - 1.0 Ohms

- If the resistance is not as specified, replace the actuator.

- Inspect sub-throttle actuator.
- Remove the 3 screws and sub-throttle actuator.





- Inspect sub-throttle valve.
- Check that there is no clearance between the throttle stop screw and throttle valve gear when the sub- throttle valve is fully closed.





- Inspect sub-throttle position sensor.
- Insert a 0.30 mm (0.012 in) or 0.50 mm (0.020 in) feeler gauge between the throttle stop screw and throttle valve gear.








- Using an ohmmeter, measure the resistance between each terminal.
- If necessary, adjust sub-throttle position sensor.
- Loosen the 2 set screws of the sub-throttle position sensor.





- Insert a 0.30 mm (0.01 2 in) feeler gauge between the throttle stop screw and throttle valve gear.
- Connect the tester probes of an ohmmeter to terminals IDL2 and E2 of the sub-throttle position sensor.





- Gradually turn the sub-throttle position sensor clockwise until the ohmmeter deflects, and secure it with the 2 set screws.








- Recheck the continuity between terminals IDL2 and E2.





- Reinstall sub - throttle actuator.
- Install the sub-throttle actuator with the 3 screws.