Daytime Running Lamps (DRL) Inoperative Domestic
Step | Action | Yes | No |
|---|---|---|---|
Schematic Reference: Headlights/Daytime Running Lights (DRL) Schematics | |||
1 | Did you review the daytime running lamps (DRL) operation and perform the necessary inspections? | ||
2 |
Does the DRL system operate normally? | Go to Testing for Electrical Intermittents in Wiring Systems | |
3 | Turn ON the low beam headlamps. Do the low beam headlamps operate correctly? | ||
4 | Is the DRL indicator inoperative while the DRL are illuminated? | ||
5 | Is the DRL indicator illuminated while the DRL are inoperative. | ||
6 | Are all indicators inoperative? | Go to Gages Inoperative - All in Instrument Panel, Gauges and Console | |
7 |
Does the test lamp illuminate? | ||
8 | Test the DRL relay control circuit for an open or short to voltage. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | ||
9 | Test the ignition 1 voltage circuit of the DRL control module for an open or short to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | ||
10 | Test the battery positive voltage circuit of the DRL control module for an open or short to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | ||
11 | Test the ground circuit of the DRL control module for an open or short to voltage. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | ||
12 |
Does the test lamp illuminate? | ||
13 | Test the park brake switch signal circuit of the park brake switch for a short to voltage, high resistance or an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | ||
14 | Inspect for poor connections at the harness connector of the instrument cluster and bulb. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | ||
15 | Inspect for poor connections at the harness connector of the park brake switch. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | ||
16 | Inspect for poor connections at the harness connector of the DRL control module. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | ||
17 | Replace the lamp or the instrument cluster as necessary. Refer to Instrument Cluster Bulb Replacement or Instrument Cluster Replacement in Instrument Panel, Gauges and Console. Did you complete the replacement? | -- | |
18 | Replace the park brake switch. Refer to Parking Brake Indicator Switch Replacement in Park Brake. Did you complete the replacement? | -- | |
19 | Replace the DRL control module. Refer to Daytime Running Lights (DRL) Control Module Replacement . Did you complete the replacement? | -- | |
20 | Operate the system in order to verify the repair. Did you correct the condition? | System OK | |
Daytime Running Lamps (DRL) Inoperative Export
Step | Action | Yes | No |
|---|---|---|---|
Schematic Reference: Headlights/Daytime Running Lights (DRL) Schematics | |||
1 | Did you review the daytime running lamps (DRL) operation and perform the necessary inspections? | Go to Step 2 | |
2 |
Does the DRL system operate normally? | Go to Testing for Electrical Intermittents in Wiring Systems | Go to Step 3 |
3 | Turn ON the low beam headlamps. Do the low beam headlamps operate correctly? | Go to Step 4 | |
4 | Are only the rear DRL inoperative? | Go to Step 5 | Go to Step 9 |
5 |
Does the test lamp illuminate? | Go to Step 6 | Go to Step 17 |
6 | Connect a test lamp between the DRL relay control circuit of the daytime running lamp rear park lamp relay and battery voltage. Does the test lamp illuminate? | Go to Step 8 | Go to Step 7 |
7 | Test the ignition 1 voltage circuit of the daytime running lamp rear park lamp relay for high resistance, an open or short to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 21 | Go to Step 14 |
8 | Test the DRL relay control circuit of the daytime running lamp rear park lamp relay for high resistance, an open or short to voltage. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 21 | Go to Step 16 |
9 | Test the ignition 1 voltage circuit of the DRL control module for high resistance, an open or short to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 21 | Go to Step 10 |
10 | Test the battery positive voltage circuit of the DRL control module for high resistance, an open or short to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 21 | Go to Step 11 |
11 | Test the ground circuit of the DRL control module for high resistance, an open or short to voltage. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 21 | Go to Step 12 |
12 |
Does the test lamp illuminate? | Go to Step 13 | Go to Step 16 |
13 | Test the park brake switch signal circuit of the park brake switch for a short to voltage, high resistance or an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 21 | Go to Step 15 |
14 | Inspect for poor connections at the harness connector of the daytime running lamp rear parklamp relay. Refer to Testing for Intermittent Conditions and Poor Connections in Wiring Systems and Connector Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 21 | Go to Step 18 |
15 | Inspect for poor connections at the harness connector of the park brake switch. Refer to Testing for Intermittent Conditions and Poor Connections in Wiring Systems and Connector Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 21 | Go to Step 19 |
16 | Inspect for poor connections at the harness connector of the DRL control module. 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 21 | Go to Step 20 |
17 | Repair the battery positive voltage circuit daytime running lamp rear parklamp relay. Refer to Wiring Repairs in Wiring Systems. Did you complete the repair? | Go to Step 21 | -- |
18 | Replace the daytime running lamp rear parklamp relay. Did you complete the replacement? | Go to Step 21 | -- |
19 | Replace the park brake switch. Refer to Parking Brake Indicator Switch Replacement in Park Brake. Did you complete the replacement? | Go to Step 21 | -- |
20 | Replace the DRL control module. Refer to Daytime Running Lights (DRL) Control Module Replacement . Did you complete the replacement? | Go to Step 21 | -- |
21 | Operate the system in order to verify the repair. Did you correct the condition? | System OK | Go to Step 3 |
