For 1990-2009 cars

Step | Action | Value(s) | Yes | No
--- | --- | --- | --- | ---
1 | Were you sent here from the Headlight System Check? | -- | Go to Step 2 | Go to Headlight System Check
2 |

1. Disconnect the DRL control module connector.
2. Turn the turn signal/headlamp switch to the Head position.
3. Test for continuity between cavity 2 of the DRL module connector and ground using a J 39200 .

Is there continuity in the RED/WHT wire to ground?

--

Go to Step 7

Go to Step 3

3 |

1. Disconnect the turn signal/headlamp switch connector.
2. Test for continuity between cavity 16 of the turn signal/headlamp switch connector and ground using a J 39200 .

Is there continuity in the WHT/BLK wire to ground?

--

Go to Step 4

Go to Step 5

4 | Test for continuity between cavity 8 of the turn signal/headlamp switch connector and cavity 2 of the DRL control module connector using a J 39200 . Refer to Daytime Running Lights (DRL) Control Module Replacement for access. Is there continuity in the RED/WHT wire? | -- | Go to Step 6 | Go to Step 9
5 | Repair the WHT/BLK wire between cavity 16 of the turn signal/headlamp switch connector and ground. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Headlight System Check | --
6 | Replace the turn signal/headlamp switch. Refer to Headlamp Switch Replacement . Is the replacement complete? | -- | Go to Headlight System Check | --
7 |

1. Connect a fused jumper wire from cavity 19 of the DRL control module connector to chassis ground.
2. Connect a fused jumper wire from cavity 18 of the DRL control module connector to chassis ground.

Do the low beams illuminate?

--

Go to Step 8

Go to Step 10

8 | Replace the DRL control module. Refer to Daytime Running Lights (DRL) Control Module Replacement . Is the replacement complete? | -- | Go to Headlight System Check | --
9 | Repair the open in the RED/WHT wire between the DRL control module and the turn signal/headlamp switch. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Headlight System Check | --
10 |

1. Remove the DIMMER relay in the fuse and relay block 2 located in the LH front engine compartment, left of battery.
2. Measure the voltage from cavity 4 of the DIMMER relay socket.

Is the measured voltage equal to the specified value?

B+

Go to Step 11

Go to Step 12

11 | Replace the DIMMER relay in the fuse and relay block 2 located in the LH front engine compartment, left of battery. Is the replacement complete? | -- | Go to Headlight System Check | --
12 | Test for an open in the RED/WHT wire between the DRL control module and fuse and relay block 1 which is located in the LH front engine compartment, left of the air cleaner (ACL). Does the wire have an open? | -- | Go to Step 15 | Go to Step 13
13 | Test for an open in the RED wire between the DIMMER relay and fuse and relay block 1. Does the wire have an open? | -- | Go to Step 14 | Go to Step 16
14 | Locate and repair the open in the RED wire between the DIMMER relay and fuse and relay block 1. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Headlight System Check | --
15 | Locate and repair the open in the RED/WHT wire between the DRL control module and fuse and relay block 1. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Headlight System Check | --
16 | Replace the fuse and relay block 1. Refer to Underhood Fuse Block Replacement in Engine Electrical. Is the replacement complete? | -- | Go to Headlight System Check | --