3000GT AWD V6-2972cc 3.0L DOHC Turbo (1991)
Closed Throttle Position Switch: Testing and Inspection
Idle Position Switch Circuit
To test the Idle Switch, located within the throttle position sensor on the throttle body, proceed as follows.
COMPONENT TEST
1. Disconnect the throttle position sensor connector.
2. With the throttle closed, use an ohm meter and check for continuity between terminal 3 and 4.
Continuity
Should exist.
3. Open the throttle approximately 50%, use an ohm meter and check for continuity between terminal 3 and 4.
Continuity
Should not exist.
HARNESS TEST:
1. Disconnect the idle switch connector and turn the key to the ON position.
2. Using a voltmeter, check the voltage between the harness connector terminal 3 and ground.
Voltage:
4 - 5 volts.
3. Turn the key OFF, disconnect the negative battery cable and the ECU Connector.
4. Using an ohm meter, check for continuity between ECU harness terminal 67 and idle position switch harness terminal 3.
Continuity
Should exist.
5. Using an ohm meter, check for continuity between ECU harness terminal 72 and idle position switch harness terminal 4.
Continuity
