Headlamp Low or High Beams Always On Japan, Europe
Step | Action | Yes | No |
|---|---|---|---|
Schematic Reference: Headlights Schematics | |||
1 | Did you review the Exterior Lighting System Description and Operation and perform the necessary inspections? | Go to Step 2 | |
2 |
Do the headlamps remain off? | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | Go to Step 3 |
3 | Place the headlamp dimmer switch in the LOW BEAM position and then in the HIGH BEAM position. Are the headlamps on in both cases? | Go to Step 4 | Go to Step 6 |
4 | Disconnect the headlamp switch connector. Do the headlamps remain illuminated? | Go to Step 5 | Go to Step 7 |
5 | Repair a short to battery voltage in the headlamps supply voltage circuit. Refer to Circuit Testing and to Wiring Repairs in Wiring Systems. Did you complete the repair? | Go to Step 8 | -- |
6 | Repair a short to battery voltage in the supply voltage circuit of the low beam headlamps or the supply voltage circuit of the high beam headlamps. Refer to Wiring Repairs or to Connector Repairs in Wiring Systems. Did you complete the repair? | Go to Step 8 | -- |
7 | Replace the headlamp switch. Refer to Headlamp Switch Replacement . Did you complete the replacement? | Go to Step 8 | -- |
8 | Operate the system in order to verify the repair. Did you correct the condition? | System OK | Go to Step 2 |
Headlamp Low or High Beams Always On Scandinavia
Step | Action | Yes | No |
|---|---|---|---|
Schematic Reference: Headlights/Daytime Running Lights (DRL) Schematics | |||
1 | Did you review the Exterior Lighting System Description and Operation and perform the necessary inspections? | Go to Step 2 | |
2 |
Are the low beam headlamps illuminated? | Go to Step 4 | Go to Step 3 |
3 | Are the high beam headlamps illuminated? | Go to Step 9 | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems |
4 | Place the headlamp dimmer switch in the HIGH BEAM position. Are the high beam headlamps illuminated? | Go to Step 6 | Go to Step 5 |
5 | Disconnect the DRL relay. Do the headlamps remain illuminated? | Go to Step 8 | Go to Step 10 |
6 | Disconnect the headlamp switch. Do the headlamps remain illuminated? | Go to Step 7 | Go to Step 11 |
7 | Repair a short to battery voltage in the headlamps supply voltage circuit of the headlamp switch. Refer to Circuit Testing and to Wiring Repairs in Wiring Systems. Did you find and repair the condition? | Go to Step 12 | -- |
8 | Repair a short to battery voltage in the supply voltage circuit of the headlamp low beams. Refer to Circuit Testing and to Wiring Repairs in Wiring Systems. Did you find and repair the condition? | Go to Step 12 | -- |
9 | Repair a short to battery voltage in the supply voltage circuit of the headlamp high beams. Refer to Wiring Repairs in Wiring Systems. Did you complete the repair? | Go to Step 12 | -- |
10 | Replace the DRL relay. Did you complete the replacement? | Go to Step 12 | -- |
11 | Replace the headlamp switch. Refer to Headlamp Switch Replacement . Did you complete the replacement? | Go to Step 12 | -- |
12 | Operate the system in order to verify the repair. Did you correct the condition? | System OK | Go to Step 2 |
Headlamp Low or High Beams Always On Pontiac
Step | Action | Yes | No |
|---|---|---|---|
Schematic Reference: Headlights Schematics and Headlights/Daytime Running Lights (DRL) Schematics | |||
1 | Did you review the Exterior Lighting System Description and Operation and perform the necessary inspections? | Go to Step 2 | |
2 |
Are the low beam headlamps illuminated? | Go to Step 6 | Go to Step 3 |
3 | Are the high beam headlamps illuminated? | Go to Step 12 | Go to Step 4 |
4 |
Are the high beam headlamps illuminated? | Go to Step 13 | Go to Step 5 |
5 |
Are the low beam headlamps illuminated? | Go to Step 8 | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems |
6 | Disconnect the DRL module. Do the low beam headlamps turn off? | Go to Step 15 | Go to Step 7 |
7 | Disconnect the headlamp switch. Do the low beam headlamps turn off? | Go to Step 14 | Go to Step 11 |
8 | Are the front turn signal illuminated as in daytime running lamp operation? | Go to Step 9 | |
9 | Disconnect the DRL module. Do the low beam headlamps turn off? | Go to Step 15 | Go to Step 10 |
10 | Repair a short to ignition voltage in the headlamp supply voltage circuit of the headlamp switch . Refer to Circuit Testing and to Wiring Repairs in Wiring Systems. Did you complete the repair? | Go to Step 16 | -- |
11 | Repair a short to battery voltage in the headlamp supply voltagel circuit of the headlamp switch. Refer to Circuit Testing and to Wiring Repairs in Wiring Systems. Did you complete the repair? | Go to Step 16 | -- |
12 | Repair a short to battery voltage in the supply voltage circuit of the high beam headlamps. Refer to Circuit Testing and to Wiring Repairs in Wiring Systems. Did you complete the repair? | Go to Step 16 | -- |
13 | Replace the headlamp dimmer switch. Refer to Multifunction Turn Signal Lever Replacement - On Vehicle in Steering Wheel and Column. Did you complete the replacement? | Go to Step 16 | -- |
14 | Replace the headlamp switch. Refer to Headlamp Switch Replacement . Did you complete the replacement? | Go to Step 16 | |
15 | Replace the DRL module. Refer to Daytime Running Lights (DRL) Control Module 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 2 |
Headlamp Low or High Beams Always On Chevy Domestic, Gulf States
Step | Action | Yes | No |
|---|---|---|---|
Schematic Reference: Headlights Schematics and Headlights/Daytime Running Lights (DRL) Schematics | |||
1 | Did you review the Exterior Lighting System Description and Operation and perform the necessary inspections? | Go to Step 2 | |
2 |
Are the low beam headlamps illuminated? | Go to Step 7 | Go to Step 3 |
3 | Are the high beam headlamps illuminated? | Go to Step 12 | Go to Step 4 |
4 |
Are the low beam headlamps illuminated? | Go to Step 5 | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems |
5 | Are the turn signal lamps illuminated as in daytime running lamp (DRL) operation? | Go to Step 6 | |
6 | Disconnect the DRL module. Are the low beam headlamps on? | Go to Step 10 | Go to Step 15 |
7 | Place the headlamp dimmer switch in the HIGH BEAM position. Are the high beam headlamps illuminated? | Go to Step 8 | Go to Step 11 |
8 | Disconnect the DRL module. Are the headlamps on? | Go to Step 9 | Go to Step 15 |
9 | Disconnect the headlamp switch. Are the headlamps on? | Go to Step 13 | Go to Step 14 |
10 | Repair a short to ignition voltage in the headlamps supply voltage circuit of the headlamp switch. Refer to Wiring Repairs in Wiring Systems. Did you complete the repair? | Go to Step 16 | -- |
11 | Repair a short to battery voltage in the supply voltage circuit of the low beam headlamps. Refer to Wiring Repairs in Wiring Systems. Did you complete the repair? | Go to Step 16 | -- |
12 | Repair a short to battery voltage in the supply voltage circuit of the high beam headlamps. Refer to Wiring Repairs in Wiring Systems. Did you complete the repair? | Go to Step 16 | -- |
13 | Repair a short to battery voltage in the headlamps supply voltage circuit of the headlamp switch. Refer to Wiring Repairs in Wiring Systems. Did you complete the repair? | Go to Step 16 | -- |
14 | Replace the headlamp switch. Refer to Headlamp Switch Replacement . Did you complete the replacement? | Go to Step 16 | -- |
15 | Replace the DRL module. Refer to Daytime Running Lights (DRL) Control Module 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 2 |
