For 1990-2009 cars

Step | Action | Value(s) | Yes | No
--- | --- | --- | --- | ---
DEFINITION: The following conditions exist:

• | The interior courtesy lamps stay ON with all of the doors closed.

• | The instrument panel (I/P) dimmer switch is OFF.

• | The interior lamps override switch is on (the interior courtesy lights are enabled).

• | None of the interior lighting modes are activated.

• | The inadvertent load (battery rundown) protection does not turn OFF the interior courtesy lights after 10 minutes.

1 | Did you perform the Lighting System Diagnostic System Check? | -- | Go to Step 2 | Go to Diagnostic System Check - Lighting Systems
2 |

1. Disconnect the body control module (BCM) connector C1.
2. Use a DMM in order to measure the voltage between the BCM harness connector C1 terminal E and ground.

Is the voltage within the specified range?

Less than 2 V

Go to Step 3

Go to Step 5

3 |

1. Turn OFF all of the roof rail reading lamps.
2. Close the sunshade mirror covers.
3. Use a DMM in order to measure the resistance between the BCM harness connector C1 terminal F and ground.

Is the resistance within the specified range?

Infinite

Go to Step 4

Go to Step 6

4 |

1. Reconnect the BCM connector C1.
2. Turn the ignition switch from LOCK to RUN, then back to LOCK.
3. Turn the I/P dimmer switch to the DOME position for 10 minutes.

Did the interior courtesy lamps turn OFF after 10 minutes?

--

Go to Step 8

Go to Step 7

5 | Repair a short to voltage in CKT 328 or CKT 1393, as needed. Did you complete the repair? | -- | Go to Step 8 | --
6 | Repair a short to ground in CKT 690. Did you complete the repair? | -- | Go to Step 8 | --
7 | Replace the BCM. Refer to Body Control Module Replacement in Body Control Systems. Did you complete the repair? | -- | Go to Step 8 | --
8 | Operate the system in order to verify the repair. Did you correct the condition? | -- | System OK | Go to Step 2