Step | Action | Yes | No |
---|---|---|---|
Schematic Reference: Headlights/Daytime Running Lights (DRL) Schematics Connector End View Reference: Lighting Systems Connector End Views , Computer/Integrating Systems Connector End Views in Computer/Integrating Systems, or Wiper/Washer Connector End Views in Wiper/Washer 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 | Verify that the low beam headlamps are inoperative. Do the low beam headlamps operate normally? | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | Go to Step 3 |
3 | Is only one low beam headlamp inoperative? | Go to Step 4 | Go to Step 5 |
4 |
Did you complete the repair? | Go to Step 18 | -- |
5 | Does the wiper activated headlamp (WAH) function of the wiper system operate normally? | Go to Step 8 | Go to Step 6 |
6 |
Does the scan tool display Active after approximately 3 cycles of the wiper blades? | Go to Step 13 | Go to Step 7 |
7 | Test the windshield wiper switch signal 1 circuit for an open, high resistance, or short to voltage. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct a condition? | Go to Step 18 | Go to Step 12 |
8 | Disconnect the turn signal/multifunction switch. Do the low beam headlamps illuminate? | Go to Step 11 | Go to Step 9 |
9 |
Was a voltage signal present? | Go to Step 10 | Go to Step 14 |
10 | Test for a short to voltage in the headlamp high beam relay control circuit. Refer to Electrical Center Identification Views and Circuit Testing in Wiring Systems. Did you find and correct a condition? | Go to Step 18 | Go to Step 13 |
11 | Test for a short to ground in the headlamp dimmer switch high beam signal circuit or flash to pass switch signal circuit. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct a condition? | Go to Step 18 | Go to Step 12 |
12 | Inspect for poor connections at the harness connector of the turn signal/multifunction switch. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 18 | Go to Step 15 |
13 | Inspect for poor connections at the harness connector of the body control module (BCM). Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 18 | Go to Step 16 |
14 | Inspect for poor connections at the harness connector of the underhood fuse block and beam select relay. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 18 | Go to Step 17 |
15 | Replace the turn signal/multifunction switch. Refer to Turn Signal Multifunction Switch Replacement in Steering Wheel and Column. Did you complete the repair? | Go to Step 18 | -- |
16 | Replace the BCM. Refer to Control Module References in Computer/Integrating Systems for replacement, setup, and programming. Did you complete the replacement? | Go to Step 18 | -- |
17 | Replace the beam select relay. Refer to Relay Replacement in Wiring Systems. Did you complete the repair? | Go to Step 18 | -- |
18 |
Did you correct the condition? | System OK | Go to Step 3 |