Pinpoint Test W: The Fog Lamps On Indicator Is Inoperative

Fog Lamps

Pinpoint Tests

Pinpoint Test W: The Fog Lamps On Indicator Is Inoperative

Refer to Wiring Diagram Set 86, Fog Lamps for schematic and connector information. Diagrams By Number

Normal Operation

When the fog lamps are on, voltage is also provided to the headlamp switch for the fog lamps ON indicator.

This pinpoint test is intended to diagnose the following:

- Wiring, terminals or connectors
- Headlamp switch



PINPOINT TEST W: THE FOG LAMPS ON INDICATOR 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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W1 CHECK FOR VOLTAGE TO THE HEADLAMP SWITCH


- Ignition OFF.
- Disconnect: Headlamp Switch C205.
- Ignition ON.
- Enter the following diagnostic mode on the scan tool: SJB DataLogger.
- Select the SJB fog lamps (FOG_LMP) active command. Command the fog lamps on.
- NOTE: Make sure the fog lamps are illuminated when taking a reading.
- Measure the voltage between the headlamp switch C205-10, circuit CLF12 (BN/YE), harness side and ground.




- Is the voltage greater than 10 volts?

Yes
INSTALL a new headlamp switch. REFER to Headlamp Switch Service and Repair. TEST the system for normal operation.

No
REPAIR circuit CLF12 (BN/YE) for an open. TEST the system for normal operation.

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