Pinpoint Test F: The Demand Lamps Are Inoperative
Interior Lighting
Pinpoint Tests
Pinpoint Test F: The Demand Lamps Are Inoperative
Refer to Wiring Diagram Set 89, Interior Lamps for schematic and connector information. Diagrams By Number
Normal Operation
The Smart Junction Box (SJB) supplies voltage to the demand lamps on circuit CLN09 (YE/GN). The demand lamps are ground through circuit GD139 (BK/YE). The glove compartment lamp (MKZ only) is case grounded.
This pinpoint test is intended to diagnose the following:
- Wiring, terminals or connectors
- SJB
PINPOINT TEST F: THE DEMAND LAMPS ARE 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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F1 CHECK THE OPERATION OF THE COURTESY LAMPS
- Ignition OFF.
- Operate the courtesy lamps by opening the LH front door.
- Do the courtesy lamps illuminate?
Yes
GO to F2.
No
Go To Pinpoint Test A. Pinpoint Test A: The Courtesy Lamps Are Inoperative
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F2 CHECK CIRCUIT CLN09 (YE/GN) FOR AN OPEN
- Disconnect: SJB C2280e.
- Connect a fused jumper wire between the SJB C2280e-2, circuit CLN09 (YE/GN), harness side and battery positive.
- Do the demand lamps illuminate?
Yes
REMOVE the jumper wire. GO to F3.
No
REMOVE the jumper wire. REPAIR the circuit. TEST the system for normal operation.
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F3 CHECK FOR CORRECT SJB OPERATION
- Disconnect all the SJB connectors.
- Check for:
- corrosion
- damaged pins
- pushed-out pins
- Connect all the SJB connectors and make sure they seat correctly.
- Operate the system and verify the concern is still present.
- Is the concern still present?
Yes
INSTALL a new SJB. REFER to Body Control Systems. TEST the system for normal operation.
No
The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector.
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