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.
- Check for any current or history DTCs.
Are there any current or history DTCs present?
| --
| Go to Body Control Module.
|
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 11
|
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
14
| --
|
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 near the specified value?
| Less than 5 ohms
|
Go to Step 10
|
Go to Step 7
|
7
| Use the DMM
in order to measure the resistance from terminal 9 of the multifunction
relay K134 and a known good ground.
Does the resistance measure near the specified value?
| Less than 5 ohms
| Go to
Step 8
| Go to
Step 9
|
8
|
- 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 14
| --
|
9
|
- Locate an open or a short to B+ in CKT XY801.
- Repair the open or short to B+ in CKT XY801.
- If this circuit is OK, replace the BCM.
Refer to Body Control Module.
Did you complete the repair?
| --
| Go to
Step 14
| --
|
10
|
- 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 14
| --
|
11
|
- 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 near the specified value?
| Less than 5 ohms
| Go to
Step 13
| Go to
Step 12
|
12
|
- Locate an open or a high resistance in CKT XY112 and CKT F6.
- Repair the open or the high resistance in CKT XY112 and
CKT F6.
- 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 14
| --
|
13
| Replace the BCM. Refer to
Body Control Module Replacement
in Body control System.
Did you complete the repair?
| --
|
Go to Step
14
| --
|
14
|
- 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
|
