Pinpoint Test D: The Courtesy Lamps Do Not Turn On With One Door Open

Interior Lighting

Pinpoint Tests

Pinpoint Test D: The Courtesy Lamps Do Not Turn On With One Door Open

Refer to Wiring Diagram Set 117, Remote Keyless Entry and Alarm for schematic and connector information. Diagrams By Number

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

Normal Operation

The Smart Junction Box (SJB) monitors the door ajar switch status on circuits CPL26 (GN/VT) (LH front), CPL36 (GN)/CPL39 (YE) (LH rear), CPL31 (WH) (RH front) and CPL39 (YE) (RH rear). The door ajar switches are normally closed when the doors are closed. When the SJB determines a door is open, the SJB then controls the voltage side of the interior lamp on circuit VLN33 (GY/VT) to illuminate the courtesy lamps.

This pinpoint test is intended to diagnose the following:

- Wiring, terminals or connectors
- Door ajar switch
- SJB



PINPOINT TEST D: THE COURTESY LAMPS DO NOT TURN ON WITH ONE DOOR OPEN

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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D1 CHECK THE DOOR AJAR SWITCH OPERATION


- Ignition OFF.
- Disconnect: Suspect Door Ajar Switch .
- Do the courtesy lamps illuminate?

Yes
INSTALL a new door ajar switch in question. TEST the system for normal operation.

No
GO to D2.

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D2 CHECK THE DOOR AJAR SWITCH CIRCUIT FOR A SHORT TO GROUND


- Disconnect: SJB C2280c.
- Measure the resistance between the suspect door ajar switch, harness side and ground as follows:









- Is the resistance greater than 10,000 ohms?

Yes
GO to D3.

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

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D3 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. 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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