Pinpoint Test G: All The Demand Lamps Are Inoperative

Interior Lighting

Pinpoint Test G: All The Demand Lamps Are Inoperative

Refer to Wiring Diagram Set 89, Interior Lamps for schematic and connector information Electrical Diagrams.

Normal Operation

The Smart Junction Box (SJB) energizes the battery saver relay based on inputs from the ignition key position, the door ajar, liftgate ajar and liftgate window 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, voltage is supplied to the demand lamps.

This pinpoint test is intended to diagnose the following:

- Fuse

- Wiring, terminals or connectors

- SJB (Smart Junction Box)

PINPOINT TEST G : 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.

NOTE: Make sure the courtesy lamps operate before continuing diagnostics.

G1 CHECK THE OPERATION OF ALL THE DEMAND LAMPS

- Ignition OFF.

- Operate and observe each demand lamp (map lamps and vanity lamps).

Are all the demand lamps inoperative?

Yes
VERIFY the SJB (Smart Junction Box) fuse 25 (10A) is OK. If OK, GO to G2. If not OK, REFER to the Wiring Diagrams to identify the possible causes of the circuit short Electrical Diagrams.

No
GO to Pinpoint Test H Pinpoint Test H: An Individual Demand Lamp Is Inoperative.

G2 BYPASS THE SJB (Smart Junction Box)

- Disconnect: SJB (Smart Junction Box) C2280D.

- Connect a fused jumper wire between the SJB (Smart Junction Box) C2280D-21, circuit CLN09 (YE/GN), harness side and battery positive.





- Switch on a demand lamp.

Does the demand lamp illuminate?

Yes
REMOVE the jumper wire. GO to G3.

No
REPAIR circuit CLN09 (YE/GN) for an open. TEST the system for normal operation.

G3 CHECK FOR CORRECT SJB (Smart Junction Box) OPERATION

- Disconnect all the SJB (Smart Junction Box) connectors.

- Check for:
- corrosion

- damaged pins

- pushed-out pins


- Connect all the SJB (Smart Junction Box) 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 (Smart Junction Box). 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.