For 1990-2009 cars

Step | Action | Value(s) | Yes | No
--- | --- | --- | --- | ---
1 | Was the entire exterior lights system check performed? | -- | Go to Step 2 | Go to Exterior Lights System Check
2 |

1. Turn the ignition switch to the RUN position.
2. Make sure the park brake is off.
3. Apply a bright light to the DRL ambient light sensor.
4. Connect a test light between the DRL module connector C1 terminal H and ground.

Does the test light illuminate?

--

Go to Step 3

Go to Step 4

3 | Repair a poor connection or an open in circuit 9. Is the repair complete? | -- | Go to Step 9 | --
4 |

1. Turn the ignition switch to the OFF position.
2. Disconnect the ambient light sensor.
3. Turn the ignition switch to the RUN position.
4. Connect a 3A jumper acroos the ambient light sensor terminals A and B (harness side).

Do the headlamps turn on ?

--

Go to Step 5

Go to Step 6

5 | Replace the ambient light sensor. Is the repair complete? | -- | Go to Step 9 | --
6 | Check continuity in circuits 1137 and 1138. Is there continuity? | -- | Go to Step 7 | Go to Step 8
7 | Replace the DRL module. Refer to Daytime Running Lights (DRL) Control Module Replacement . Is the repair complete? | -- | Go to Step 9 | --
8 | Repair the poor connection or open in circuit 1137 or 1138. Is the repair complete? | -- | Go to Step 9 | --
9 |

1. Turn the ignition switch to the OFF position.
2. Reconnect all connectors/components removed.

Have all repairs been made?

--

Go to Exterior Lights System Check

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