Transmission Position Sensor/Switch: Testing and Inspection

Injection Electronics. Wiring Diagram:

1. With the ignition switch OFF, disconnect the DME control unit harness connector X1500 (located in the E-Box).
2. Turn the ignition switch to the run (ON) position and place the transmission range selector in park or neutral. Make the following voltage measurements at X1500 of the harness connector.

^ Brown/black wire (terminal 42) and ground:

Expected result:= Battery voltage.

If not: check fuse F17 at the front power distribution box.

3. If OK, disconnect harness connector X511 at the transmission range selector switch and make the following voltage/resistance measurements.

^ Brown/black wire (terminal 3) of range selector switch to terminal 42 of the DME control unit:

Expected result:= 0 Ohms.

If not: check for an open.

^ Terminal 1 of connector X511 and ground:

Expected result:= Battery voltage.

If not: check wire from terminal 1 to fuse F17 for an open and repair or replace as necessary.

4. If OK, check for continuity at the transmission range selector switch

^ Terminals 1 and 3:

Expected result:= 0 Ohms.

If not: the transmission range selector switch is defective.