Step | Action | Value(s) | Yes | No | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
1 | Did you perform the Lighting Systems Diagnostic System Check? | -- | Go to Step 2 | |||||||||
2 | Verify that the high beam headlamps are inoperative. Do the headlamps operate normally? | -- | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | Go to Step 3 | ||||||||
3 | Inspect the PARK LP 20 A fuse in the Underhood Fuse Block. Is the fuse open? | -- | Go to Step 4 | Go to Step 7 | ||||||||
4 |
Was a problem found? | -- | Go to Step 5 | Go to Step 6 | ||||||||
5 | Locate and repair the short to ground in the B+ circuit to the Multifunction Switch (Headlamp Switch), the Headlamp Switch Headlamps On Signal circuit, or the Headlamp Relay Coil Supply Voltage circuit. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Step 22 | -- | ||||||||
6 | Test the Headlamp Grounding Relay and the Headlamp Power Relay for an internal short to the ground terminal and replace as necessary. Refer to Circuit Testing in Wiring Systems. Is the repair complete? | -- | Go to Step 22 | -- | ||||||||
7 |
Does the test lamp Illuminate? | -- | Go to Step 11 | Go to Step 8 | ||||||||
8 | Test the following circuits for an open or high resistance. Refer to Circuit Testing in Wiring Systems.
Was a problem found? | -- | Go to Step 9 | Go to Step 10 | ||||||||
9 | Locate and repair the open or high resistance in the following circuits. Refer to Wiring Repairs in Wiring Systems.
Is the repair complete? | -- | Go to Step 22 | -- | ||||||||
10 | Replace the Multifunction Switch (Headlamp Switch). Refer to Turn Signal Switch Replacement - On Vehicle in Steering Wheel and Column - Tilt. | -- | Go to Step 22 | -- | ||||||||
11 | Connect the test lamp from ground to the Headlamp High Beam Supply Voltage circuit terminal of either inoperative headlamp socket. Refer to Circuit Testing in Wiring Systems. Does the test lamp illuminate? | -- | Go to Step 13 | Go to Step 12 | ||||||||
12 | Replace the Headlamp Power Relay. Is the repair complete? | -- | Go to Step 22 | -- | ||||||||
13 | Connect the test lamp between the Headlamp High Beam Supply Voltage circuit terminal and CKT 524 (PPL) terminal of either inoperative headlamp socket. Refer to Circuit Testing in Wiring Systems. Does the test lamp illuminate? | -- | Go to Step 14 | Go to Step 15 | ||||||||
14 | Replace both High Beam Headlamps. Is the repair complete? | -- | Go to Step 22 | -- | ||||||||
15 |
Does the test lamp light? | -- | Go to Step 19 | Go to Step 16 | ||||||||
16 | Test the Headlamp Switch Flash to Pass Signal circuit for an open or high resistance. Refer to Circuit Testing in Wiring Systems. Was a problem found? | -- | Go to Step 17 | Go to Step 18 | ||||||||
17 | Locate and repair the open or high resistance in the Headlamp Switch Flash to Pass Signal circuit. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Step 22 | -- | ||||||||
18 | Replace the Multifunction Switch (Headlamp Switch). Refer to Turn Signal Switch Replacement - On Vehicle in Steering Wheel and Column - Tilt. | -- | Go to Step 22 | -- | ||||||||
19 | Test for an open or high resistance in CKT 524 (PPL) and the Flash To Pass Relay ground circuit. Refer to Circuit Testing in Wiring Systems. Was a problem found? | -- | Go to Step 20 | Go to Step 21 | ||||||||
20 | Locate and repair the open or high resistance in CKT 524 (PPL) or the Flash To Pass Relay ground circuit. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Step 22 | -- | ||||||||
21 | Replace the Flash to Pass Relay. Is the repair complete? | -- | Go to Step 22 | -- | ||||||||
22 | Operate the system in order to verify the repair. Did you correct the condition? | -- | System OK | Go to Step 3 |
