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

Normal Operation

When any door is opened, the door ajar switch opens the circuit to the Smart Junction Box (SJB). The SJB monitors the door ajar circuits, and based on the status, the SJB supplies voltage to the courtesy lamps on circuit VLN33 (GY/VT).

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 PIDs


- Ignition ON.
- Enter the following diagnostic mode on the scan tool: SJB DataLogger.
- Check the SJB door ajar switch PIDs (D_DR_SW, P_DR_SW, LRDR_SW and RRDR_SW) while opening and closing all the doors.
- Do all the door ajar switch PID values agree with the door positions?

Yes
GO to D4.

No
GO to D2.

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D2 CHECK THE DOOR AJAR SWITCH OPERATION


- 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 D3.

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D3 CHECK THE DOOR AJAR SWITCH CIRCUIT FOR A SHORT TO GROUND


- Ignition OFF.
- 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 D4.

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

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D4 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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