For 1990-2009 cars

Step | Action | Value(s) | Yes | No
--- | --- | --- | --- | ---
1 | Did you perform the Daytime Running Lamps (DRL) Check? | -- | Go to Step 2 | Go to Daytime Running Lights (DRL) System Check
2 |

1. Turn the ignition switch to the ON position.
2. Turn the light switch to OFF.
3. Using a J 39200 , backprobe the DRL control module from cavity 5 to ground.
4. Measure the voltage.

Is the voltage greater than the specified value?

B+

Go to Step 3

Go to Step 4

3 |

1. Using a J 39200 , backprobe the DRL control module connector from cavity 7 to B+.
2. Measure the voltage.

Is the voltage greater than the specified value?

B+

Go to Step 5

Go to Step 6

4 | Repair the open in the BLK/WHT wire between the junction block and the DRL control module. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Daytime Running Lights (DRL) System Check | --
5 |

1. Disengage the parking brake.
2. Using a J 39200 , backprobe the DRL control module from cavity 3 to B+.
3. Measure the voltage.

Is the voltage greater than the specified value?

B+

Go to Step 8

Go to Step 7

6 | Repair the open in the BLK wire between the DRL control module and G201. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Daytime Running Lights (DRL) System Check | --
7 |

1. Start the engine.
2. Using a J 39200 , backprobe the DRL control module connector from cavity 4 to ground.
3. Measure the voltage.

Is the voltage greater than the specified value?

B+

Go to Step 10

Go to Step 12

8 | Inspect for a short to ground in the PPL or the RED/YEL wire between the DRL control module and the parking brake switch. Is the connection OK? | -- | Go to Step 9 | Go to Step 13
9 | Replace the parking brake switch. Refer to Park Brake Lever Assembly Replacement in Park Brake. Is the repair complete? | -- | Go to Daytime Running Lights (DRL) System Check | --
10 | Inspect for a short to ground in the RED/WHT wire between the DRL control module and S104. Is the connection OK? | -- | Go to Step 11 | Go to Step 13
11 | Replace the DRL control module. Refer to Daytime Running Lights (DRL) Control Module Replacement . Is the repair complete? | -- | Go to Daytime Running Lights (DRL) System Check | --
12 | Refer to the diagnosis of the charging system. Refer to Charging System Check in Engine Electrical. Is the diagnosis complete? | -- | Go to Daytime Running Lights (DRL) System Check | --
13 | Repair the short to ground. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Daytime Running Lights (DRL) System Check | --