For 1990-2009 cars

Step | Action | Value(s) | Yes | No
--- | --- | --- | --- | ---
Important:

• | In order to prevent misdiagnosis, inspect for electronic brake control module (EBCM) diagnostic trouble codes (DTCs). Refer to ABS Diagnostic System Check .

• | Inspect the master brake cylinder fluid level prior to performing this diagnosis.

1 |

1. Turn the ignition switch to RUN.
2. Backprobe with a fused jumper between the electronic brake control module (EBCM) connector C1 terminal 16 and ground.

Did the BRAKE indicator go out?

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Go to ABS Diagnostic System Check

Go to Step 2

2 | Backprobe with a fused jumper between the brake malfunction indicator lamp driver module connector terminal C and ground. Did the BRAKE indicator go out? | -- | Go to Step 9 | Go to Step 3
3 | Disconnect the brake malfunction indicator lamp driver module. Did the BRAKE indicator go out? | -- | Go to Step 10 | Go to Step 4
4 | Disconnect the brake fluid level indicator sensor. Did the BRAKE indicator go out? | -- | Go to Step 11 | Go to Step 5
5 | Disconnect the park brake switch. Did the BRAKE indicator go out? | -- | Go to Step 12 | Go to Step 6
6 | Disconnect the daytime running lights (DRL) module connector C2. Did the BRAKE indicator go out? | -- | Go to Step 7 | Go to Step 8
7 |

1. Inspect for a short to ground in CKT 1134.
2. If OK, replace the DRL module.

Is the repair complete?

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System OK

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8 |

1. Inspect for a short to ground in CKT 33, including the rear compartment lid release relay if equipped with a manual transmission.
2. If OK, replace the instrument cluster. Refer to Instrument Cluster Replacement .

Is the repair complete?

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System OK

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9 |

1. Inspect for a short to voltage in CKT 1471 between the lamp driver module and the electronic brake control module (EBCM).
2. If OK, repair an open or a poor connection in CKT 1471 between the lamp driver module and the EBCM.

Is the repair complete?

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System OK

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10 | Replace the lamp driver module. Is the repair complete? | -- | System OK | --
11 | Replace the park brake fluid level indicator sensor. Is the repair complete? | -- | System OK | --
12 |

1. Inspect the park brake switch for mechanical interference.
2. If OK, replace the switch.

Is the repair complete?

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System OK

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