Throttle Full Close Switch: Testing and Inspection

The idle switch senses whether the accelerator pedal is depressed or not, converts it into high/low voltage and input the voltage to the ECM. The TPS includes idle switch.

Circuit Diagram:

SENSOR CHECKING

Using Hi-SCAN:

USING VOLTMETER
1. Disconnect the throttle position sensor connector.
2. Check the continuity between terminal 3 and sensor ground.




3. If out of specification, replace the throttle position sensor.

Harness Inspection:

TROUBLESHOOTING HINTS
If the idle position switch harness is OK, but the idle position switch output is abnormal, check for the following items.
1. Poorly adjusted accelerator cable or auto-cruise control cable.
2. Poorly adjusted idle position switch (fixed SAS).