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NO.6 BRAKE SYSTEM WARNING LIGHT STAYS ON MORE THAN 4 SECONDS WITH IGNITION SWITCH ON [APPLIED VIN (ASSUMED): JM0 DY10Y100 108402-, JM6 DY10*100 109001-]

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6 | BRAKE system warning light stays on more than 4 seconds with ignition switch on. (Parking brake is released.)
[TROUBLESHOOTING HINTS] • Instrument cluster or ABS HU/CM malfunction • Short to ground in circuit in parking brake switch

Diagnostic procedure

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

• When performing an asterisked (*) troubleshooting inspection, shake the wiring harness and connectors while doing the inspection to discover whether poor contact points are the cause of any intermittent malfunctions. If there is a problem, inspect to make sure connectors, terminals and wiring harnesses are connected correctly and undamaged.