Step
| Action
| Value(s)
| Yes
| No
|
1
| Was the Headlamp Diagnostic System Check performed?
| --
| Go to
Step 2
| Go to
Headlight System Check
|
2
|
- Disconnect the inoperative headlamp connector.
- Turn the headlamp switch to the HEAD position.
- Complete the following steps if the low beam is inoperative:
| • | Turn the headlamp dimmer switch to the LOW position. |
| • | Use a test lamp in order to backprobe from the inoperative headlamp
connector terminal B to ground. |
- Complete the following steps if the high beam is inoperative:
| • | Turn the headlamp dimmer switch to the HIGH position. |
| • | Use a test lamp in order to backprobe from the inoperative headlamp
connector terminal C to ground. |
Did the test lamp light?
| --
| Go to
Step 3
| Go to
Step 4
|
3
|
| • | If the low beam is inoperative, use a test lamp in order to frontprobe
the inoperative headlamp connector B to headlamp connector A. |
| • | If the high beam is inoperative, use a test lamp in order to frontprobe
the inoperative headlamp connector C to headlamp connector A. |
Did the test lamp light?
| --
| Go to
Step 6
| Go to
Step 7
|
4
|
- Complete the following steps for the left headlamp:
| • | For the low beam, use a test lamp in order to backprobe between
the underhood accessory junction block harness C3 terminal B8
and ground. |
| • | For the high beam, use a test lamp in order to backprobe between
the underhood accessory junction block harness C3 terminal B4
and ground. |
- Complete the following steps for the right headlamp:
| • | For the low beam, use a test lamp in order to backprobe between
the underhood accessory junction block harness C3 terminal A8
and ground. |
| • | For the high beam, use a test lamp in order to backprobe between
the underhood accessory junction block harness C3 terminal A4
and ground. |
Did the test lamp light?
| --
| Go to
Step 5
| Go to
Step 8
|
5
|
| • | For the low beam, repair an open in CKT 12 between the
underhood accessory junction block harness connector and the inoperative headlamp
connector terminal B. |
| • | For the high beam, repair an open in CKT 11 between the
underhood accessory junction block harness connector and the inoperative headlamp
connector terminal C. |
Has the repair been completed?
| --
| Go to
Headlight System Check
| --
|
6
| Replace the headlamp. Refer to
Headlamp Replacement
.
Has the repair been completed?
| --
| Go to
Headlight System Check
| --
|
7
|
| • | For the left headlamp, repair an open in CKT 1350 between
the headlamp connector terminal A and G101. |
| • | For the right headlamp, repair an open in CKT 1250 between
the headlamp connector terminal A and G102. |
Has the repair been completed?
| --
| Go to
Headlight System Check
| --
|
8
|
| • | For the low beam, use a test lamp in order to backprobe between
the underhood accessory junction block harness connector C2 terminal F8
to ground. |
| • | For the high beam, use a test lamp in order to backprobe between
the underhood accessory junction block harness connector C2 terminal F4
to ground. |
Did the test lamp light?
| --
| Go to
Step 9
| Go to
Step 10
|
9
| Replace the underhood accessory junction block. Refer to
Relay/Fuse Center Replacement
in Wiring Systems.
Has the repair been completed?
| --
| Go to
Headlight System Check
| --
|
10
| Voltage is not present to illuminate the low beams or the high beams.
Are the low beam headlamps inoperative or the highbeam headlamps inoperative?
| --
| Go to
Headlamps Inoperative - Low Beams
or
Headlamps Inoperative - High Beams
| --
|
