Diagnostic Procedure

WARNING: This page is about a different car, the 2004 Dodge Dakota. However, it is still accessible from the selected car via links, so may be relevant.

CARGO LAMPS INOPERATIVE - DIAGNOSTIC PROCEDURE

TEST	ACTION
1	Turn the ignition off. Disconnect the Headlamp Switch harness connector. Connect a jumper wire from the Cargo Lamp Switch Sense Circuit and ground. Do the Cargo Lamps come on? Yes --> Repair the Cargo Lamp Switch Sense Circuit for an open. Perform BODY VERIFICATION TEST - VER 1 . No --> Go To 2
2	Turn the ignition off. Disconnect the Headlamp Switch harness connector. Connect a jumper wire from the Headlamp Switch Output Circuit and ground. Do the Cargo Lamps come on? Yes --> Repair the Headlamp Switch Output Circuit for a short to ground. Perform BODY VERIFICATION TEST - VER 1 . No --> Go To 3
3	Turn the ignition off. Disconnect the Headlamp Switch harness connector. Disconnect the Central Timer Module harness connector. Measure the resistance between the Cargo Lamp Driver Circuit and ground. Is the resistance below 100.0 ohms? Yes --> Repair the Cargo Lamp Driver Circuit for a short to ground. Perform BODY VERIFICATION TEST - VER 1 . No --> Go To 4
4	Turn the ignition off. Disconnect the Headlamp Switch harness connector and remove the Headlamp Switch. Turn the Headlamp Switch off. Turn the Courtesy Lamp Switch off. Measure the resistance between the Interior Lamp Defeat Circuit and the remaining Headlamp Switch connector terminals. Measure the resistance between the Cargo Lamp Switch Sense Circuit and the remaining terminals. Is the resistance below 100.0 ohms for any of the measurements? Yes --> Replace the Headlamp Switch. Perform BODY VERIFICATION TEST - VER 1 . No --> Replace the Central Timer Module. Perform BODY VERIFICATION TEST - VER 1 .