Headlamp Low or High Beams Always On Domestic
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 |
Did any of the headlamps illuminate? | Go to Step 5 | Go to Step 3 |
3 |
Are the headlamps illuminate? | Go to Step 4 | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems |
4 | Are the daytime running lamps illuminated? | Go to Step 17 | |
5 | Did both the low beam headlamps and high beam headlamps illuminate? | Go to Step 7 | Go to Step 6 |
6 | Are the low beam headlamps illuminated at all times? | Go to Step 11 | Go to Step 9 |
7 | Disconnect the Daytime Running Lamp (DRL) control module connector C2. Are the headlamps illuminated? | Go to Step 10 | Go to Step 8 |
8 |
Does the test lamp illuminate? | Go to Step 14 | Go to Step 17 |
9 | If the high beam headlamps are illuminated, remove the headlamp circuit breaker. Are the high beam headlamps illuminated? | Go to Step 12 | Go to Step 15 |
10 | Disconnect the headlamp switch. Are the headlamps illuminated? | Go to Step 13 | Go to Step 16 |
11 | Test for a short to voltage in all the headlamp low beam supply voltage circuits. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 19 | Go to Step 18 |
12 | Test for a short to voltage in all the headlamp high beam supply voltage circuits. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 19 | Go to Step 18 |
13 | Repair a short to voltage in the headlamp supply voltage circuit of the headlamp switch. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you complete the repair? | Go to Step 19 | -- |
14 | Repair a short to ground in the RKE activation circuit of the daytime running lamps module. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you complete the repair? | Go to Step 19 | -- |
15 | Replace the turn signal switch. Refer to Multifunction, Turn Signal, and Hazard Switch Replacement - On Vehicle in Steering Wheel and Column. Did you complete the repair? | Go to Step 19 | -- |
16 | Replace the headlamp switch. Refer to Headlamp Switch Replacement . Did you complete the repair? | Go to Step 19 | -- |
17 | Replace the Daytime Running Lamp (DRL) control module . Refer to Daytime Running Lights (DRL) Control Module Replacement . Did you complete the repair? | Go to Step 19 | -- |
18 | Replace the junction block - underhood. Refer to Underhood Electrical Center or Junction Block Replacement in Wiring Systems. Did you complete the repair? | Go to Step 19 | -- |
19 | 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 Export
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 |
Did any of the headlamps illuminate? | Go to Step 3 | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems |
3 | Did both the low beam headlamps and high beam headlamps illuminate? | Go to Step 7 | Go to Step 4 |
4 | Are the low beam headlamps illuminated at all times? | Go to Step 5 | Go to Step 6 |
5 | Disconnect the Daytime Running Lamp (DRL) control module connector C2. Are the low beam headlamps illuminated? | Go to Step 8 | Go to Step 21 |
6 | If the high beam headlamps are illuminated, remove the HEAD LAMP circuit breaker. Are the headlamp high beams illuminated? | Go to Step 12 | Go to Step 19 |
7 | Disconnect the headlamp switch. Are the headlamps illuminated? | Go to Step 16 | Go to Step 20 |
8 | Remove the LH HEAD LP LOW fuse. Is the LH low beam headlamp illuminated? | Go to Step 10 | Go to Step 9 |
9 | Remove the RH HEAD LP LOW fuse. Is the low beam - RH headlamp illuminated? | Go to Step 11 | Go to Step 17 |
10 | Test for a short to voltage in the supply voltage circuit of the LH low beam headlamp. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 23 | Go to Step 22 |
11 | Test for a short to voltage in the supply voltage circuit of the RH low beam headlamp. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 23 | Go to Step 22 |
12 | Remove the LH HEAD LP HIGH fuse. Is the LH low beam headlamp illuminated? | Go to Step 14 | Go to Step 13 |
13 | Remove the RH HEAD LP HIGH fuse. Is the low beam - RH headlamp illuminated? | Go to Step 15 | Go to Step 18 |
14 | Test for a short to voltage in the supply voltage circuit of the LH high beam headlamp . Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 23 | Go to Step 22 |
15 | Test for a short to voltage in the supply voltage circuit of the RH high beam headlamp . Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 23 | Go to Step 22 |
16 | Repair a short to voltage in the headlamp supply voltage circuit of the headlamp switch. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you complete the repair? | Go to Step 23 | -- |
17 | Repair a short to voltage in the headlamp low beam supply voltage circuit. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you complete the repair? | Go to Step 23 | -- |
18 | Repair a short to voltage in the headlamp high beam supply voltage circuit. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you complete the repair? | Go to Step 23 | -- |
19 | Replace the turn signal switch. Refer to Multifunction, Turn Signal, and Hazard Switch Replacement - On Vehicle in Steering Wheel and Column. Did you complete the repair? | Go to Step 23 | -- |
20 | Replace the headlamp switch. Refer to Headlamp Switch Replacement . Did you complete the repair? | Go to Step 23 | -- |
21 | Replace the Daytime Running Lamps (DRL) control module. Refer to Daytime Running Lights (DRL) Control Module Replacement . Did you complete the repair? | Go to Step 23 | -- |
22 | Replace the junction block - underhood. Refer to Underhood Electrical Center or Junction Block Replacement in Wiring Systems. Did you complete the repair? | Go to Step 23 | -- |
23 | Operate the system in order to verify the repair. Did you correct the condition? | System OK | Go to Step 2 |
