For 1990-2009 cars

Step | Action | Value(s) | Yes | No
--- | --- | --- | --- | ---
1 | Did you review the operation and perform the necessary inspections? | -- | Go to Step 2 | Go to Symptoms
2 |

1. Turn ON the ignition, with the engine OFF.
2. Open the driver's door.

Does the DOOR AJAR message turn on with the driver's door open?

--

Go to Step 3

Go to DOOR AJAR Message Inoperative in Doors

3 | Are the headlamps on? | -- | Go to Diagnostic System Check - Lighting Systems in Lighting Systems | Go to Step 4
4 | Test the control circuit of the headlamp and IP lamp dimmer switch for a high resistance or an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 10 | Go to Step 5
5 | Connect a test lamp between the control circuit of the headlamp and IP lamp dimmer switch and ground. Refer to Circuit Testing in Wiring Systems. Does the test lamp illuminate? | -- | Go to Step 6 | Go to Step 7
6 | Replace the BCM. Refer to Body Control Module Replacement in Body Control Systems. Is the repair complete? | -- | Go to Step 10 | --
7 | Inspect for poor connections at the harness connector of the BCM connector C2. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 10 | Go to Step 8
8 | Inspect for poor connections at the harness connector of the headlamp and IP lamp dimmer switch. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 10 | Go to Step 9
9 | Replace the headlamp and IP lamp dimmer switch. Refer to Headlamp Switch Replacement in Lighting Systems. Is the repair complete? | -- | Go to Step 10 | --
10 | Operate the system in order to verify the repair. Did you correct the condition? | -- | System OK | Go to Step 2