Step
| Action
| Value(s)
| Yes
| No
|
DEFINITION:
The courtesy lamps do not turn on when the I/P lamp dimmer switch is in the
DOME position. The courtesy lights turn on when any door is open.
|
1
|
- Turn the ignition switch off.
- Connect scan tool to Data Link Connector (DLC).
- Turn the ignition switch on.
- Using scan tool, monitor the status of the COURTESY LAMP SWITCH.
- While observing the scan tool, turn the I/P lamp dimmer switch
from off to DOME, back to off.
Does the scan tool display that the status of the COURTESY LAMP SWITCH
is ON when the I/P lamp dimmer switch is in the DOME position?
| --
|
Go to Step 5
|
Go to Step 2
|
2
|
- Turn the I/P dimmer switch to the DOME position.
- Using a test light, connect by backprobing between the Body Control
Module (BCM) connector C1 terminal D15 and B+
Is the test light on?
| --
|
Go to Step
5
|
Go to Step 3
|
3
|
- Disconnect the I/P lamp dimmer switch electrical connector.
- Using a test light, connect between the I/P lamp dimmer switch
harness connector terminal A and B+.
Is the test lamp on?
| --
|
Go to Step
4
|
Go to Step 6
|
4
|
- Turn the ignition switch off.
- Disconnect the BCM connector C1.
- Using a DMM, measure the resistance between the BCM harness connector
C1 terminal D15 and the I/P lamp dimmer switch harness connector terminal
E.
Is the resistance within the specified range?
| Less than 2ohms
|
Go to Step 7
|
Go to Step
8
|
5
|
- Turn the ignition switch off.
- Disconnect the scan tool from the DLC.
- Turn the ignition switch on.
- Close all the vehicle doors.
- While observing the courtesy lamps, turn the I/P lamp dimmer switch
to the DOME position.
Do the courtesy lamps turn on when the I/P lamp dimmer switch is in
the DOME position?
| --
|
Go to Step 9
|
Go to Step 10
|
6
| Repair poor
connection or open in circuit 1750.
Is the repair complete?
| --
|
Go to Step
11
| --
|
7
| Replace the I/P lamp dimmer switch assembly. Refer to
Instrument Panel Multifunction Switch Assembly Replacement
in Instrument
Panel, Gauges and Console.
Is the repair complete?
| --
|
Go to Step
11
| --
|
8
| Repair poor connection or open in circuit 1495.
Is the repair complete?
| --
|
Go to Step
11
| |
9
| The malfunction is not present at this time. Refer to
Interior Lights Circuit Description
for more information
regarding the operation of the courtesy lamps.
Is the action complete?
| --
|
Go to Step
11
| --
|
10
|
- Inspect the BCM connector C1 terminal D15 for a poor terminal
contact. Perform the repairs as necessary.
- If the BCM connector C1 terminal D15 is OK, then replace the BCM.
Refer to
Body Control Module Replacement
in Body Control System.
- After BCM replacement, perform the Setup New BCM procedure. Refer
to
Body Control Module (BCM) Programming/RPO Configuration
in Body Control System.
Is the action complete?
| --
|
Go to Step
11
| --
|
11
|
- Turn the ignition switch off.
- Reinstall the connectors/components removed.
- Check for the BCM DTCs. Refer to
Diagnostic Trouble Code (DTC) Displaying
in Body Control System.
Are there any DTCs stored in the BCM?
| --
| Go to
Diagnostic System Check - Body Control System
in Body Control System
| System OK
|
