NO.6 BRAKE SYSTEM WARNING LIGHT STAYS ON 4 S OR MORE WHEN THE IGNITION SWITCH IS TURNED TO THE ON POSITION (PARKING BRAKE IS RELEASED)

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NO.6 BRAKE SYSTEM WARNING LIGHT STAYS ON 4 S OR MORE WHEN THE IGNITION SWITCH IS TURNED TO THE ON POSITION (PARKING BRAKE IS RELEASED)

B3E040367650W10

6 | BRAKE system warning light stays on 4 s or more when the ignition switch is turned to the ON position. (Parking brake is released.)
[TROUBLESHOOTING HINTS] • Instrument cluster malfunction • Short to ground in circuit in parking brake switch • Brake fluid level sensor is low

Diagnostic procedure

1 | INSPECT BRAKE FLUID LEVEL • Is brake fluid level normal? | Yes | Go to the next step.
No | Add brake fluid.
2 | INSPECT FOR DTCs IN ABS HU/CM • Have DTCs been stored in memory? | Yes | Perform the applicable DTC inspection. (See DTC Table.)
No | Go to the next step.
3 | VERIFY WHETHER MALFUNCTION IS IN PARKING BRAKE SWITCH • Disconnect the parking brake switch connector. • Does BRAKE system warning light go out with the ignition switch is turned to the ON position? | Yes | Replace the parking brake switch. (See PARKING BRAKE LEVER REMOVAL/INSTALLATION.)
No | Perform the following inspection. Repair if necessary. • Short to ground in the wiring harness between the instrument cluster (BRAKE system warning light) and parking brake switch. Inspect the instrument cluster.
*4 | INSPECT WIRING HARNESS BETWEEN ABS HU/CM AND DLC -2 FOR CONTINUITY • Disconnect the ABS HU/CM connector. • Is there continuity between connector terminal H, L and DLC-2? | Yes | Go to the next step.
No | Repair the wiring harness between the ABS HU/CM and DLC-2.
*5 | INSPECT WIRING HARNESS BETWEEN ABS/ HU/CM AND DLC-2 FOR SHORT TO POWER SUPPLY Is the voltage approx. 12 V at connector terminal H, L? | Yes | Repair the wiring harness between the ABS HU/CM and DLC-2.
No | Go to the next step.
*6 | INSPECT WIRING HARNESS BETWEEN ABS HU/CM AND DLC-2 FOR SHORT TO GROUND Is there continuity between connector terminal H, L and ground? | Yes | Repair the wiring harness between the ABS HU/CM and DLC-2.
No | Replace ABS HU/CM (communication circuit malfunction in ABS HU/CM). (See ABS HU/CM REMOVAL/INSTALLATION.)

• When performing an asterisked (*) troubleshooting inspection, slightly shake the wiring harness and connectors while performing the inspection to discover whether poor contact points are the cause of any intermittent malfunction. If there is a problem, verify that the connectors, terminals and wiring harness are connected correctly and undamaged.