Liftgate Courtesy Lamp Disable Feature Inoperative

Possible Causes are:

• OPEN FUSED B (+)
• OPEN LIFTGATE COURTESY DISABLE CIRCUIT
• LIFTGATE COURTESY DISABLE SWITCH
• BCM COURTESY DISABLE

1. Disconnect the Cargo Lamp connector. Measure the voltage of the Fused B (+) circuit at the Cargo Lamp connector. Is the voltage more than 10 volts? If yes, go to next step. If no, repair the open Fused B (+) circuit to the Cargo Lamp connector. Perform BODY VERIFICATION TEST VER 1  under VERIFICATION TESTS.
2. Disconnect the Cargo Lamp connector. Disconnect the Junction Block C1 connector. Measure the resistance of the Liftgate Courtesy Disable circuit between the Cargo Lamp connector and the Junction Block C1 connector. Is the resistance less than 5 ohms? If yes, go to next step. If no, repair the open Liftgate Courtesy Disable wire. Perform BODY VERIFICATION TEST VER 1  under VERIFICATION TESTS.
3. Gain access to the Cargo Lamp connector but do not disconnect. Using a voltmeter backprobe the Liftgate Courtesy Disable circuit at the Cargo Lamp connector while cycling the Disable Switch on and off. Does the voltage toggle from approximately 10.0 volts to 0.0 volt? If yes, go to next step. If no, replace the liftgate (cargo) lamp assembly. Perform BODY VERIFICATION TEST VER 1  under VERIFICATION TESTS.
4. If there are no possible causes remaining, replace the Body Control Module. Perform BODY VERIFICATION TEST VER 1  under VERIFICATION TESTS.