Operation CHARM: Car repair manuals for everyone.
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Manual Trans.

THROTTLE POSITION SENSOR
INSPECTION
1. Disconnect the throttle position sensor connector.




2. Using an ohmmeter, measure resistance between throttle position sensor terminals A and C.

Resistance: 4-6 k Ohms

3. If not as specified, replace the throttle position sensor.
4. Reconnect the throttle position sensor connector.




5. Connect the SST to the ECM as shown.
6. Turn ignition switch ON.
7. Measure voltage at ECM terminal 2M under the following conditions.

Specification
Throttle valve condition Terminal voltage (V)
Closed throttle position 0.3-0.7
Wide open throttle 3.4-5.3


(The voltage increase is linear according to the throttle valve opening angle)

8. Disconnect the SST.
9. If not as specified, adjust the throttle position sensor. Adjustments




CLOSED THROTTLE POSITION SWITCH
INSPECTION

1. Disconnect the closed throttle position switch connector.
2. Check continuity between the switch and a ground.

Throttle valve Continuity
Closed throttle position Yes
Open No


3. If not as specified, check the condition of the wiring harness of the closed throttle position switch. Replace the closed throttle position switch and the throttle body (as an assembly), if necessary.