Pinpoint Test C: One High Beam Headlamp Is Inoperative

Headlamps

Pinpoint Tests

Pinpoint Test C: One High Beam Headlamp Is Inoperative

Refer to Wiring Diagram Set 85, Headlamps/Autolamps for schematic and connector information. Diagrams By Number

Normal Operation

When the Smart Junction Box (SJB) detects the headlamp switch in the HEADLAMPS ON position and the multifunction switch in the HIGH BEAM position, the SJB energizes an internal relay. When the relay is energized, voltage is routed to the high beams. Ground for the high beams is shared with the low beams.

This pinpoint test is intended to diagnose the following:

- Wiring, terminals or connectors


PINPOINT TEST C: ONE HIGH BEAM HEADLAMP 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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C1 CHECK THE LOW BEAM OPERATION


- Check the operation of the low beams.
- Do the low beams operate correctly.

Yes
REPAIR circuit CLF08 (YE/VT) for an open. TEST the system for normal operation.

No
GO to Pinpoint Test B. Pinpoint Test B: One Low Beam Headlamp Is Inoperative

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