Pinpoint Test E: The Luggage Compartment/Cargo Lamp Is Always On

Interior Lighting

Pinpoint Test E: The Luggage Compartment/Cargo Lamp Is Always On

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

Normal Operation

The Body Control Module (BCM) sends a voltage signal to the luggage compartment lid/liftgate ajar switch (integrated into the latch) to monitor the ajar switch status. The switch is normally closed when the luggage compartment lid/liftgate is closed, and open when the luggage compartment lid/liftgate is open. The ajar switch also controls the ground side of the luggage compartment lamp. The luggage compartment ajar switch completes the path to ground for the luggage compartment/cargo lamp when the luggage compartment lid/liftgate is open.

This pinpoint test is intended to diagnose the following:

- Wiring, terminals or connectors
- Luggage compartment lid/liftgate latch

PINPOINT TEST E: THE LUGGAGE COMPARTMENT/CARGO LAMP IS ALWAYS ON

NOTICE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.

-------------------------------------------------
E1 CHECK THE LUGGAGE COMPARTMENT LID/LIFTGATE AJAR PID

- Ignition ON.
- Enter the following diagnostic mode on the scan tool: BCM DataLogger.
- Monitor the BCM luggage compartment lid/liftgate ajar PID while opening and closing the luggage compartment lid/liftgate.
- Does the PID agree with the luggage compartment lid/liftgate positions?

Yes
GO to E2.

No
GO to Pinpoint Test C. Pinpoint Test C: The Luggage Compartment/Cargo Lamp Is Inoperative

-------------------------------------------------
E2 CHECK THE LUGGAGE COMPARTMENT LID/LIFTGATE LATCH

- Ignition OFF.
- Disconnect: Luggage Compartment Lid/Liftgate Latch C4223.
- Ignition ON.
- Does the luggage compartment/cargo lamp continue to illuminate?

Yes
REPAIR circuit CLN13 (WH/BU) for a short to ground. TEST the system for normal operation.

No
INSTALL a new luggage compartment lid/liftgate latch. REFER to Handles, Locks, Latches and Entry Systems Luggage Compartment Lid Latch. TEST the system for normal operation.

-------------------------------------------------