Pinpoint Test V: An Individual Reversing Lamp Is Inoperative

Reversing Lamps

Pinpoint Tests

Pinpoint Test V: An Individual Reversing Lamp Is Inoperative

Refer to Wiring Diagram Set 93, Reversing Lamps for schematic and connector information. Diagrams By Number

Normal Operation

When the transmission is placed in REVERSE (R), the digital Transmission Range (TR) sensor routes voltage to the reversing lamps.

This pinpoint test is intended to diagnose the following:

- Wiring, terminals or connectors

PINPOINT TEST V: AN INDIVIDUAL REVERSING LAMP IS INOPERATIVE

NOTICE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.

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V1 CHECK FOR VOLTAGE TO THE REVERSING LAMP


- Ignition OFF.
- Disconnect: Inoperative Reversing Lamp.
- Apply the parking brake.
- Select REVERSE.
- Measure the voltage between the LH reversing lamp C451-3, circuit 140 (BK/PK), harness side and ground; or between the RH reversing lamp C461-3, circuit 140 (BK/PK), harness side and ground.




- Is the voltage greater than 10 volts?

Yes
REPAIR circuit 57 (BK) for an open. TEST the system for normal operation.

No
REPAIR circuit 140 (BK/PK) for an open. TEST the system for normal operation.

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