Step | Action | Yes | No |
|---|---|---|---|
Schematic Reference: Headlights/Daytime Running Lights (DRL) Schematics Connector End View Reference: Master Electrical Component List in Wiring Systems | |||
1 | Did you perform the Diagnostic System Check? | Go to Step 2 | Go to Diagnostic System Check - Vehicle in Vehicle DTC Information |
2 | Turn the headlamp switch to the OFF position. Do the low and high beam headlamps remain OFF? | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | Go to Step 3 |
3 | Are the high beam headlamps on at all times when the low beams are on? | Go to Step 4 | Go to Step 12 |
4 | Is only one high beam headlamp ON? | Go to Step 19 | Go to Step 5 |
5 | Remove the high beam relay. Do the high beam headlamps turn off? | Go to Step 6 | Go to Step 11 |
6 |
Are the high beam headlamps illuminate? | Go to Step 7 | Go to Step 8 |
7 | Test for 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 24 | Go to Step 20 |
8 |
Are the high beam headlamp illuminated? | Go to Step 9 | Go to Step 23 |
9 | Test for a short to ground in the flash to pass switch signal circuit. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 24 | Go to Step 10 |
10 | Test for a short to ground in the headlamp switch high beam signal circuit. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 24 | Go to Step 23 |
11 | Test for a short to battery positive voltage in the high beam headlamp solenoid switched voltage supply circuit. Refer to Circuit Testing and to Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 24 | Go to Step 21 |
12 | Remove the low beam relay. Do the low beam headlamps turn OFF? | Go to Step 13 | Go to Step 18 |
13 |
Are the low beam headlamps ON? | Go to Step 14 | Go to Step 15 |
14 | Test for 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 24 | Go to Step 20 |
15 |
Are the low beam headlamps ON? | Go to Step 16 | Go to Step 22 |
16 | Test for a short to battery positive voltage, poor connection or an open in the headlamp switch OFF signal circuit. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 24 | Go to Step 17 |
17 | Test for a short to ground in the headlamp switch headlamps ON signal circuit. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 24 | Go to Step 23 |
18 | Test for a short to battery positive in low beam headlamp ballast switched voltage supply circuit. Refer to Circuit Testing and to Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 24 | Go to Step 21 |
19 | Replace the headlamp. Refer to Headlamp Assembly or Headlamp Bulb and/or Cornering, Sidemarker, Park, Turn Signal Bulb Replacement . Did you complete the repair? | Go to Step 24 | -- |
20 | Replace the relay. Refer to Relay Replacement in Wiring Systems. Did you complete the replacement? | Go to Step 24 | -- |
21 | Replace the underhood electrical center. Refer to Underhood Electrical Center or Junction Block Replacement in Wiring Systems. Did you complete the replacement? | Go to Step 24 | -- |
22 | 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 24 | -- |
23 |
Important: After replacing the BCM, perform the setup procedure. Refer to Body Control Module (BCM) Programming/RPO Configuration in Computer/Integrating Systems. Replace the BCM. Refer to Body Control Module Replacement in Computer/Integrating Systems. Did you complete the repair? | Go to Step 24 | -- |
24 | Operate the system in order to verify the repair. Did you correct the condition? | System OK | Go to Step 3 |
