Headlamps Inoperative - Low Beams
WARNING: This page is about a different car, the 2004 Pontiac Vibe. However, it is still accessible from the selected car via links, so may be relevant.
Headlamps Inoperative - Low Beams
| Step | Action | Yes | No |
|---|---|---|---|
| Schematic Reference: Exterior Lights Schematics | |||
| 1 | Did you review the Lighting System Description and Operation and perform the necessary inspections? | Go to Step 2 | Go to Symptoms - Lighting Systems |
| 2 | Verify that the headlamps are inoperative in low beams. Does the system operate normally? |
Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | Go to Step 3 |
| 3 | With the headlamps in the ON position, test cavity 12 of the turn signal/headlamp switch for continuity to ground. Refer to Circuit Testing
in Wiring Systems. Is a ground present? |
Go to Step 4 | Go to Step 12 |
| 4 | With the headlamps in the ON position, test C3 cavity 5 of the right instrument panel junction block for continuity to ground. Refer to Circuit Testing
in Wiring Systems. Is a ground present? |
Go to Step 5 | Go to Step 6 |
| 5 | With the headlamps in the ON position, test C3 cavity 6 of the right instrument panel junction block for continuity to ground. Refer to Circuit Testing
in Wiring Systems. Is a ground present? |
Go to Step 7 | Go to Step 14 |
| 6 | Repair the open in the low beam switch circuit between cavity 12 of the turn signal/headlamp switch and cavity 5 of C3. Refer to Circuit Testing
in Wiring Systems. Did you complete the repair? |
Go to Step 16 | - |
| 7 | With the headlamps in the ON position, test cavity 5 of the daytime running lamp for continuity to ground. Refer to Circuit Testing
in Wiring Systems. Is a ground present? |
Go to Step 8 | Go to Step 9 |
| 8 | With the headlamps in the ON position, test cavity A of the daytime running lamp for continuity to ground. Refer to Circuit Testing
in Wiring Systems. Is a ground present? |
Go to Step 10 | Go to Step 12 |
| 9 | Repair the open in the low beam switch circuit between cavity 5 of the daytime running lamp control module and cavity 5 of C3. Refer to Circuit Testing
in Wiring Systems. Did you complete the repair? |
Go to Step 16 | - |
| 10 | With the headlamps in the ON position, test cavity 1 of C200 for continuity to ground. Refer to Circuit Testing
in Wiring Systems. Is a ground present? |
Go to Step 11 | Go to Step 13 |
| 11 | Repair the open in the low beam control circuit between cavity 1 of C200 and S120. Refer to Wiring Repairs
in Wiring Systems. Did you complete the repair? |
Go to Step 16 | - |
| 12 | Replace the DRL control module. Refer to Daytime Running Lights (DRL) Control Module Replacement . Did you complete the repair. |
Go to Step 16 | - |
| 13 | Repair the open in the low beam control circuit between cavity A of the daytime running lamp control module and cavity 1 of C200. Refer to Wiring Repairs
in Wiring Systems. Did you complete the repair? |
Go to Step 16 | - |
| 14 | Replace the instrument panel harness. Refer to Instrument Panel (I/P) Harness Replacement
in Wiring Systems. Did you complete the replacement? |
Go to Step 16 | - |
| 15 | Replace the turn signal/headlamp switch. Refer to Headlamp Switch Replacement . Did you complete the replacement? |
Go to Step 16 | - |
| 16 | Operate the system in order to verify the repair. Did you correct the condition? |
System OK | Go to Step 3 |