Headlamp Low or High Beams Always On (Standard)
Headlamp Low or High Beams Always On (Standard)
| Step | Action | Yes | No |
|---|---|---|---|
| Schematic Reference: Headlights/Daytime Running Lights (DRL) Schematics
and Wiper/Washer Schematics
in Wipers/Washer Systems Connector End View Reference: Master Electrical Component List in Wiring Systems |
|||
| 1 | Did you perform the Diagnostic System Check - Vehicle? | Go to Step 2 | Go to Diagnostic System Check - Vehicle in Vehicle DTC Information |
| 2 |
|
Go to Step 3 | Go to Step 12 |
| 3 | With a scan tool, observe both the Low Beam and High Beam Relay parameters in the IPM outputs data list. Does the scan tool indicate the Low Beam and High Beam Relay output parameters are OFF? |
Go to Step 7 | Go to Step 4 |
| 4 | With a scan tool, observe the Lights On With Wipers parameter in the IPM inputs data list. Does the scan tool indicate OFF? |
Go to Step 5 | Go to Step 13 |
| 5 | With the scan tool, observe the Flash to Pass Switch parameter in the IPM inputs data list. Does the scan tool indicate that the Flash to Pass Switch parameter is INACTIVE? |
Go to Step 6 | Go to Step 14 |
| 6 | With a scan tool, observe the Twilight Enable status in the IPM exterior lamps data list. Does the scan tool indicate that the Twilight Enable is DISABLED? |
Go to Step 22 | Go to Twilight Sentinel Inoperative |
| 7 | Are the high beam headlamps ON? | Go to Step 10 | Go to Step 8 |
| 8 |
|
Go to Step 9 | Go to Step 23 |
| 9 |
|
Go to Step 15 | Go to Step 19 |
| 10 |
|
Go to Step 11 | Go to Step 24 |
| 11 |
|
Go to Step 16 | Go to Step 20 |
| 12 |
|
Go to Step 21 | Go to Step 17 |
| 13 | Test the windshield wiper switch ON signal circuit for a short to voltage. Refer to Circuit Testing
and Wiring Repairs
in Wiring Systems. Did you find and correct the condition? |
Go to Step 29 | Go to Step 22 |
| 14 |
|
Go to Step 21 | Go to Step 18 |
| 15 | Locate and repair a short to ground in the headlamp low beam relay control circuit. Refer to Circuit Testing
and Wiring Repairs
in Wiring Systems. Did you find and correct the condition? |
Go to Step 29 | Go to Step 22 |
| 16 | Locate and repair a short to ground in the headlamp high beam relay control circuit. Refer to Circuit Testing
and Wiring Repairs
in Wiring Systems. Did you find and correct the condition? |
Go to Step 29 | Go to Step 22 |
| 17 | Locate and repair a short to ground in the headlamp switch headlamp ON signal circuit. Refer to Circuit Testing
and Wiring Repairs
in Wiring Systems. Did you find and correct the condition? |
Go to Step 29 | Go to Step 22 |
| 18 | Test the flash to pass switch signal circuit for a short to ground. Refer to Circuit Testing
and Wiring Repairs
in Wiring Systems. Did you find and correct the condition? |
Go to Step 29 | Go to Step 22 |
| 19 | Inspect for poor connections at the low beam relay. Refer to Testing for Intermittent Conditions and Poor Connections
and Connector Repairs
in Wiring Systems. Did you find and correct the condition? |
Go to Step 29 | Go to Step 25 |
| 20 | Inspect for poor connections at the high beam relay. Refer to Testing for Intermittent Conditions and Poor Connections
and Connector Repairs
in Wiring Systems. Did you find and correct the condition? |
Go to Step 29 | Go to Step 26 |
| 21 | Inspect for poor connections at the harness connector of the turn signal/multifunction switch. Refer to Testing for Intermittent Conditions and Poor Connections
and Connector Repairs
in Wiring Systems. Did you find and correct the condition? |
Go to Step 29 | Go to Step 27 |
| 22 | Inspect for poor connections at the harness connector of the IPM. Refer to Testing for Intermittent Conditions and Poor Connections
and Connector Repairs
in Wiring Systems. Did you find and correct the condition? |
Go to Step 29 | Go to Step 28 |
| 23 | Locate and 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 29 | - |
| 24 | Locate and 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 29 | - |
| 25 | Replace the headlamp low beam relay. Refer to Relay Replacement (Attached to Wire Harness)
or Relay Replacement (Within an Electrical Center)
in Wiring Systems. Did you complete the replacement? |
Go to Step 29 | - |
| 26 | Replace the headlamp high beam relay. Refer to Relay Replacement (Attached to Wire Harness)
or Relay Replacement (Within an Electrical Center)
in Wiring Systems. Did you complete the replacement? |
Go to Step 29 | - |
| 27 | Replace the turn signal/multifunction switch. Refer to Turn Signal Multifunction Switch Replacement
in Steering Wheel and Column. Did you complete the replacement? |
Go to Step 29 | - |
| 28 | Replace the IPM. Refer to Control Module References
in Computer/Integrating Systems for replacement, setup, and programming. Did you complete the replacement? |
Go to Step 29 | - |
| 29 | Operate the system in order to verify the repair. Did you correct the condition? |
System OK | Go to Step 2 |