Pinpoint Test S: An Individual Fog Lamp Is Inoperative

Fog Lamps

Pinpoint Tests

Pinpoint Test S: An Individual Fog Lamp Is Inoperative

Refer to Wiring Diagram Set 86 (Escape/Mariner, Escape Hybrid/Mariner Hybrid), Fog Lamps for schematic and connector information. Diagrams By Number

Normal Operation

When the fog lamp relay is energized, voltage is routed through circuit CLF12 (BN/YE) to the fog lamps. Ground is provided through circuit GD120 (BK/GN).

This pinpoint test is intended to diagnose the following:

- Wiring, terminals or connectors



PINPOINT TEST S: 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.

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S1 CHECK THE FOG LAMP VOLTAGE SUPPLY CIRCUIT FOR AN OPEN


- Ignition OFF.
- Disconnect: Inoperative Fog Lamp.
- Ignition ON.
- Place the headlamp switch in the PARKING LAMPS ON position and engage the fog lamp switch.
- For Escape, measure the voltage between the LH fog lamp C1322-B, circuit CLF12 (BN/YE), harness side and ground; or between the RH fog lamp C1323-B, circuit CLF12 (BN/YE), harness side and ground.




- For Mariner, measure the voltage between the LH fog lamp C152-2, circuit CLF12 (BN/YE), harness side and ground; or between the RH fog lamp C162-2, circuit CLF12 (BN/YE), harness side and ground.




- Is the voltage greater than 10 volts?

Yes
REPAIR circuit GD120 (BK/GN) for an open. 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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