Daytime Running Lamps (DRL) Inoperative Late Production After VIN 68233825
Step | Action | Yes | No |
|---|---|---|---|
Schematic Reference: Headlights/Daytime Running Lights (DRL) Schematics Connector End View Reference: Computer/Integrating Systems Connector End Views | |||
1 | Did you perform the Diagnostic System Check - Vehicle? | Go to Step 2 | |
2 |
Do the low beam headlamp bulbs illuminate? | Go to Testing for Intermittent Conditions and Poor Connections | Go to Step 3 |
3 | With a scan tool, observe the DRL Status parameter in the body control module (BCM) data list. Does the scan tool display On? | Go to Step 4 | Go to Step 7 |
4 | Test the DRL supply voltage circuit for an open, high resistance, or short to ground. Refer to Circuit Testing and Wiring Repairs . Did you find and correct the condition? | Go to Step 9 | Go to Step 5 |
5 | Inspect for poor connections at the harness connector of the underhood fuse block. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs . Did you find and correct the condition? | Go to Step 9 | Go to Step 6 |
6 | Replace the DRL relay. Refer to Relay Replacement . Did you complete the repair? | Go to Step 9 | -- |
7 | Inspect for poor connections at the harness connector of the BCM. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs . Did you find and correct the condition? | Go to Step 9 | Go to Step 8 |
8 | Replace the BCM. Refer to Control Module References for replacement, setup, and programming. Did you complete the replacement? | Go to Step 9 | -- |
9 | Operate the system in order to verify the repair. Did you correct the condition? | System OK | Go to Step 3 |
Daytime Running Lamps (DRL) Inoperative Early Production to VIN 68233825
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 Hydraulic Brake Connector End Views in Hydraulic Brakes | |||
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 daytime running lamps (DRL) are inoperative. Do the DRL operate normally? | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | Go to Step 3 |
3 |
Does the scan tool display Released? | Go to Step 5 | Go to Step 4 |
4 | Test the signal circuit of the park brake switch for a short to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct a condition? | Go to Step 16 | Go to Step 8 |
5 | With a scan tool, observe the Headlamp Off Switch data parameter in the BCM data list. Does the scan tool display Inactive? | Go to Step 6 | Go to Step 7 |
6 |
Does the parameter indicate that there is sufficient light to activate the DRL? | Go to Step 11 | Go to Step 9 |
7 | Test the headlamp switch headlamps OFF signal circuit and low reference circuit of the headlamp switch for a short to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct a condition? | Go to Step 16 | Go to Step 10 |
8 | Inspect for poor connections at the harness connector of the park brake switch. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 16 | Go to Step 12 |
9 | Inspect for poor connections at the harness connector of the ambient light sensor. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 16 | Go to Step 13 |
10 | Inspect for poor connections at the harness connector of the headlamp and panel dimmer switch. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 16 | Go to Step 14 |
11 | Inspect for poor connections at the harness connector of the BCM. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 16 | Go to Step 15 |
12 | Replace the park brake switch. Refer to Parking Brake Indicator Switch Replacement in Park Brake. Did you complete the replacement? | Go to Step 16 | -- |
13 | Replace the ambient light sensor. Refer to Ambient Light Sensor Replacement . Did you complete the replacement? | Go to Step 16 | -- |
14 | Replace the headlamp and panel dimmer switch. Refer to Headlamp Switch Replacement . Did you complete the replacement? | Go to Step 16 | -- |
15 | 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 16 | -- |
16 |
Did you correct the condition? | System OK | Go to Step 3 |
