Step
| Action
| Value(s)
| Yes
| No
|
1
| Did you perform
the Interior Lights Diagnostic System Check?
| --
| Go to
Step 2
| Go to
Interior Lamps System Check
|
2
|
- Install the scan tool.
- Establish communication with the BCM.
- Test for any current or history DTCs.
Are there any current or history DTCs present?
| --
| Go to
Diagnostic System Check - Body Control System
| Go to
Step 3
|
3
|
- Use the scan tool in order to turn on the interior lamps.
- Select INTERIOR LAMPS from the light test menu under special functions
on the scan tool.
- Press the ON button and the OFF button on the scan tool in order
to turn the interior lamps on and off.
- Monitor the scan tool while pressing the ON and OFF buttons. The
scan tool can tell you the status of the BCM when either the ON or OFF button
has been pressed.
Do the interior lamps turn on when commanded by the BCM?
| --
| Go to
Step 9
| Go to
Step 4
|
4
|
- Locate the multifunction relay K134.
- Do not disconnect the multifunction relay K134 from its connector.
- Turn on the ignition.
- Turn the headlamp switch to the INTERIOR LAMPS ON position.
- Use a DMM in order to measure the voltage between terminal 2
of the multifunction relay K134 and a known good ground.
Does the voltage measure near the specified value?
| B+
| Go to
Step 6
| Go to
Step 5
|
5
| Replace the multifunction relay K134.
Did you complete the repair?
| --
| Go to
Step 12
| --
|
6
| Use the DMM in order to measure the resistance between terminal 13
of the multifunction relay K134 and a known good ground.
Does the resistance measure less than the specified value?
| 5 ohms
| Go to
Step 8
| Go to
Step 7
|
7
|
- Locate an open or a high resistance in CKT F805.
- Repair the open or the high resistance in CKT F805.
- If CKT F805 is OK, replace the multifunction relay K134.
Did you complete the repair?
| --
| Go to
Step 12
| --
|
8
|
- Locate an open or a high resistance in CKT AP805 and/or
CKT XP803.
- Repair the open or the high resistance in CKT AP805 and/or
CKT XP803.
Did you complete the repair?
| --
| Go to
Step 12
| --
|
9
|
- Turn off the scan tool.
- Disconnect the BCM connector C2.
- Turn the headlamp switch to the INTERIOR LAMPS ON position.
- Use the DMM in order to measure the resistance between terminal D16
of the BCM connector C2 and a known good ground.
Does the resistance measure less than the specified value?
| 5 ohms
| Go to
Step 11
| Go to
Step 10
|
10
|
- Locate an open or a high resistance in CKT XY112 and CKT F18.
- Repair the open or the high resistance in CKT XY112 and
CKT F18.
- If these circuits are OK, replace the headlamp switch. Refer to
Headlamp Switch Replacement
in Lighting
Systems.
Did you complete the repair?
| --
| Go to
Step 12
| --
|
11
| Replace the BCM. Refer to
Body Control Module Replacement
in Body control System.
Did you complete the repair?
| --
| Go to
Step 12
| --
|
12
|
- Connect all connectors and components that were previously disconnected.
- Verify that the interior lamps operate properly.
Do the interior lamps operate properly?
| --
| Go to
Interior Lamps System Check
| Go to
Step 1
|
