Pinpoint Test O: An Individual Fog Lamp Is Inoperative

Fog Lamps

Pinpoint Test

Pinpoint Test O: An Individual Fog Lamp Is Inoperative

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

Normal Operation

When the fog lamp relay is energized, voltage is routed to the fog lamps.

This pinpoint test is intended to diagnose the following:

- Wiring, terminals or connectors



PINPOINT TEST O: AN INDIVIDUAL FOG 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.

NOTE: Failure to disconnect the battery when instructed will result in false resistance readings. Refer to Battery.

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O1 CHECK THE FOG LAMP GROUND FOR AN OPEN


- Ignition OFF.
- Disconnect: Negative Battery Cable.
- Disconnect: Inoperative Fog Lamp.
- Measure the resistance between the LH fog lamp C152-B, circuit GD121 (BK/YE), harness side and ground; or between the RH fog lamp C162-B, circuit GD123 (BK/GY), harness side and ground.




- Is the resistance less than 5 ohms?

Yes
REPAIR circuit CLF12 (BN/YE) for an open. TEST the system for normal operation

No
REPAIR circuit GD121 (BK/YE) (LH fog lamp) or circuit GD123 (BK/GY) (RH fog lamp) for an open. TEST the system for normal operation.

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