Initial Inspection and Diagnostic Overview

CAUTION: Use only the digital multimeter to check the system.

1. The indicator light does not go on when the ignition switch is turned on.
Check the following items. If they are OK, check the ABS control unit connectors. If not loose or disconnected, install a new ABS control unit and recheck:
- Blown ABS indicator light bulb.
- Open circuit in YEL wire between No.5 (10 A) fuse and gauge assembly.
- Open circuit in BLU/WHT wire between gauge assembly and ABS control unit.
- Loose component grounding of the ABS control unit to the body.
2. The ABS indicator light remains ON after the engine is started, however the ABS indicator light does not blink any code or sub-code. Check the following items:
- Loose or poor connection of the wire harness at the ABS control unit.
- Faulty ABS 2.3 (20A) fuse.
- Open circuit in WHT/BLK wire between ABS 2.3 (20A) fuse and ABS control unit.
- Open circuit in YEL/BLK wire between fuse No. 4 (15 A) and ABS control unit.
- Short circuit in BLU/WHT wire between gauge assembly and ABS control unit.
- Open circuit in WHT/BLU wire between alternator and ABS control unit.

If the problem is not found substitute a known-good ABS control unit and recheck whether the ABS indicator light remains ON.