Throttle Full Close Switch: Testing and Inspection

Idle Position Switch Circuit:

To test the Idle Switch, located on the throttle body, proceed as follows.

COMPONENT TEST

1. Disconnect the motor position sensor (MPS) connector.
2. With an ohmmeter, check check for continuity between the MPS terminal 4 and ground.

Continuity
Continuity should exist.



HARNESS TEST:

1. Disconnect the motor position sensor connector.
2. With the ignition on, check the supply Voltage at the connector terminal 4.

Voltage
4 or more Volts.


If any of the previous tests produce unsatisfactory results, the harness will need to be repaired or replaced. Once repairs have been completed, road test the vehicle to confirm that the repair has corrected the problem.
If the same problem reoccurs, it is possible that there is an intermittent failure of the component or the ECU. Check for looseness at all harness junctions and test for an intermittent failure.