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Home >> Dodge and Ram >> 2003 >> Durango Base, 5.9 Z, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 105 (Body Diagnostic Procedures) >> Diagnostic Information And Procedure >> Interior Lighting >> Symptom: *Courtesy/Dome Lamps Inoperative With Headlamp Switch >> Diagnostic Procedure

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.
COURTESY/DOME LAMPS INOPERATIVE WITH HEADLAMP SWITCH - DIAGNOSTIC PROCEDURE

TEST ACTION
1 Turn the ignition off.
Disconnect the Headlamp Switch harness connector. Using a 12 volt test light connected to 12 volts, check the ground circuit of the Headlamp Switch harness connector.
Does the test light come on?
  1. Yes --> Go To 2
  2. No --> Repair the open ground circuit.

    Perform BODY VERIFICATION TEST - VER 1  .
2 Turn the ignition off.
Disconnect the Headlamp Switch harness connector.
Disconnect the Central Timer Module harness connector.
Measure the resistance of the Courtesy Lamp Switch Output Circuit between the Central Timer Module harness connector and the Headlamp Switch harness connector.
Is the resistance below 5.0 ohms?
  1. Yes --> Go To 3
  2. No --> Repair the Courtesy Lamp Output Circuit for an open.

    Perform BODY VERIFICATION TEST - VER 1  .
3 Turn the ignition off.
Disconnect the Headlamp Switch harness connector and remove the Headlamp Switch.
Turn the Courtesy Lamp Switch to the on position.
Measure resistance between the Courtesy Lamp Switch Sense Circuit and the Ground Circuit of the Headlamp Switch connector, component side.
Is the resistance below 5.0 ohms?
  1. Yes --> Replace the Central Timer Module.

    Perform BODY VERIFICATION TEST - VER 1  .

  2. No --> Replace the Headlamp Switch.

    Perform BODY VERIFICATION TEST - VER 1  .
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