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 - Vehicle? | 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 11 |
4 | Remove the high beam relay. Do the high beam headlamps turn OFF? | Go to Step 5 | Go to Step 10 |
5 |
Are the high beam headlamps illuminate? | Go to Step 6 | Go to Step 7 |
6 | 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 26 | Go to Step 18 |
7 |
Are the high beam headlamp illuminated? | Go to Step 8 | Go to Step 21 |
8 | 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 26 | Go to Step 9 |
9 | 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 26 | Go to Step 21 |
10 | 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 26 | Go to Step 19 |
11 | Remove the low beam relay. Do the low beam headlamps turn OFF? | Go to Step 12 | Go to Step 17 |
12 |
Are the low beam headlamps ON? | Go to Step 13 | Go to Step 14 |
13 | 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 26 | Go to Step 18 |
14 |
Are the low beam headlamps ON? | Go to Step 15 | Go to Step 20 |
15 | 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 26 | Go to Step 16 |
16 | 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 26 | Go to Step 21 |
17 | 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 26 | Go to Step 19 |
18 | Inspect for poor connections at the 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 26 | Go to Step 22 |
19 | Inspect for poor connections at the fuse block - underhood. 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 26 | Go to Step 23 |
20 | Inspect for poor connections at 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 26 | Go to Step 24 |
21 | Inspect for poor connections at the BCM. 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 26 | Go to Step 25 |
22 | Replace the relay. Refer to Relay Replacement in Wiring Systems. Did you complete the replacement? | Go to Step 26 | -- |
23 | 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 26 | -- |
24 | 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 26 | -- |
25 |
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 26 | -- |
26 | Operate the system in order to verify the repair. Did you correct the condition? | System OK | Go to Step 3 |
