Pinpoint Test G: The Interior Courtesy Lamps Stay On Continuously

Interior Lighting

Pinpoint Tests

Pinpoint Test G: The Interior Courtesy Lamps Stay On Continuously

Normal Operation

When the request from the instrument panel dimmer switch is detected, any door or liftgate is opened, a correct unlock code from the keyless entry keypad or an unlock request from a programmed Remote Keyless Entry (RKE) transmitter is detected, the Smart Junction Box (SJB) supplies voltage to the interior courtesy lamps.

- DTC B2A35 (Interior Lighting Output Circuit Open) - an on-demand DTC that sets when the SJB detects a short to voltage from the courtesy lamp output circuit.

This pinpoint test is intended to diagnose the following:

- Wiring, terminals or connectors
- SJB



PINPOINT TEST G: THE INTERIOR COURTESY LAMPS STAY ON CONTINUOUSLY

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G1 CHECK THE INTERIOR COURTESY LAMP OUTPUT CIRCUIT FOR A SHORT TO VOLTAGE


NOTE: Make sure the doors are closed for correct test results.

- Ignition OFF.
- Disconnect: SJB C2280a.
- Ignition ON.
- Observe the interior courtesy lamps
- Do the interior courtesy lamps continue to illuminate?

Yes
REPAIR circuit VLN33 (GY/VT) for a short to voltage. CLEAR the DTCs. REPEAT the self-test.

No
GO to G2.

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G2 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. TEST the system for normal operation.

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