Pinpoint Test J: All The Demand Lamps Are Inoperative

Interior Lighting

Pinpoint Tests

Pinpoint Test J: All 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) energizes the battery saver relay based on inputs from the ignition status, the ajar switches, the Remote Keyless Entry (RKE) transmitter, the keyless entry keypad and the instrument panel dimmer switch. When the battery saver relay is energized, it supplies voltage to the demand lamps.

This pinpoint test is intended to diagnose the following:

- Fuse
- Wiring, terminals or connectors
- SJB



PINPOINT TEST J: ALL 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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J1 BYPASS THE SJB


- Ignition OFF.
- Disconnect: SJB C2280d .
- NOTE: If the fuse fails, refer to the Wiring Diagrams to identify the possible causes of the circuit short. Diagrams By Number
- Connect a fused jumper wire between the SJB C2280d-21, circuit CLN09 (YE/GN), harness side and battery positive.




- Do the demand lamps illuminate when switched on?

Yes
VERIFY the SJB fuse 25 (10A) is OK. If OK, GO to J2.

No
REPAIR the circuit. TEST the system for normal operation.

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J2 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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