Throttle Position Sensor: Adjustments

Part 1 Of 4:

Part 2 Of 4:

Part 3 Of 4:

Part 4 Of 4:

PRECAUTION:
Perform Basic Inspection without electrical or mechanical loads applied;
- Headlamp switch is OFF,
- Air conditioner switch is OFF,
- Steering wheel is in the straight-ahead position, etc.

[G] THROTTLE POSITION SENSOR IDLE POSITION ADJUSTMENT

NOTE:
- Never adjust throttle adjust screw (TAS).
- Do not touch throttle drum when checking "CLSD THL/P SW" signal or "continuity", doing so may cause an incorrect adjustment.





1. Warm engine up to normal operating temperature.
2. Check FI cam. Refer to procedure C.
3. Stop engine.
4. Loosen throttle position sensor fixing bolts.











With Consult
5. Turn ignition switch "ON".
6. Select "DATA MONITOR" mode with CONSULT.
7. Select "CLSD THL/P SW" from the menu.
8. Read "CLSD THL/P SW" signal under the following conditions.
- Insert a 0.1 mm (0.004 in) feeler gauge between throttle adjust screw and throttle drum and check the following.
- Open throttle valve and then close.
- "CLSD THL/P SW" signal should remain "OFF" when the throttle valve is closed. (If signal is "ON", turn throttle position sensor body counterclockwise until the signal switches to "OFF".)
9. Temporarily tighten sensor body fixing bolts as follows.
- Gradually move the sensor body clockwise and stop it when "CLSD THL/P SW" signal switches from "OFF" to "ON", then tighten sensor body fixing bolts.
10. Make sure the signal is "ON" when the throttle valve is closed and "OFF" when it is opened. Repeat it 2 or 3 times.
11. Remove 0.1 mm (0.004 in) feeler gauge then insert 0.3 mm (0.012 in) feeler gauge and check the following. Make sure the signal remains "OFF" when the throttle valve is closed. Repeat it 2 or 3 times.
12. Tighten throttle position sensor.
Check that the "CLSD THL/P SW" signal remains "OFF" while closing throttle valve. If NG, repeat from step 4.
After this adjustment, go to procedure [H] RESET THROTTLE POSITION SENSOR IDLE POSITION MEMORY.

OR








Without Consult
5. Disconnect closed throttle position sensor harness connector.
6. Connector tester probes to closed throttle position switch terminals (5) and (6) and check continuity under the following conditions.
- Insert a 0.1 mm (0.004 in) feeler gauge between the throttle adjust screw and throttle drum as shown in the image and check the following.
- Open throttle valve then close.
- Continuity should not exist while closing the throttle valve. If continuity exists, turn throttle position sensor body counterclockwise until continuity does not exist.
7. Temporarily tighten sensor body fixing bolts as follows.
- Gradually move the sensor body clockwise and stop it when continuity comes to exist, then tighten sensor body fixing bolts.
8. Make sure continuity exists when the throttle valve is closed and continuity does not exist when it is opened. Repeat it 2 or 3 times.
9. Remove 0.1 mm (0.004 in) feeler gauge then insert 0.3 mm (0.012 in) feeler gauge and check the following. Make sure continuity does not exist when the throttle valve is closed. Repeat it 2 or 3 times.
10. Tighten throttle position sensor.
Check that continuity does not exist while closing the throttle valve. If NG, repeat from step 5.
After this adjustment, go to procedure [H] RESET THROTTLE POSITION SENSOR IDLE POSITION MEMORY.