Pinpoint Test E: The Door Lock Control Switch Illumination Is Inoperative

Instrument Cluster and Panel Illumination

Pinpoint Tests

Pinpoint Test E: The Door Lock Control Switch Illumination is Inoperative

Refer to Wiring Diagram Set 71, Cluster and Panel Illumination for schematic and connector information. Diagrams By Number

Normal Operation

When the accessory delay relay energizes, voltage is supplied to the door lock control switches through circuit CBP41 (BU), turning on the switch illumination. Switch illumination is grounded through circuits GD133 (BK) and GD148 (BK/YE).

This pinpoint test is intended to diagnose the following:

- Wiring, terminals or connectors
- Door lock control switch



PINPOINT TEST E: THE DOOR LOCK CONTROL SWITCH ILLUMINATION 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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E1 CHECK THE OPERATION OF THE DOOR LOCK SWITCH


- Operate the door locks from the suspect door lock control switch.
- Do the door locks operate?

Yes
GO to E2.

No
REFER to Locks.

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E2 CHECK CIRCUIT CBP41 (BU) FOR AN OPEN


- Ignition OFF.
- Disconnect: Suspect Door Lock Control Switch.
- Ignition ON.
- Measure the voltage between the LH door lock control switch C541-4 circuit CBP41 (BU), or the RH door lock control switch C605-4 circuit CBP41 (BU), harness side and ground.




- Is the voltage greater than 10 volts?

Yes
INSTALL a new door lock control switch. TEST the system for normal operation.

No
REPAIR the circuit. TEST the system for normal operation.

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