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ANTI-LOCK BRAKING SYSTEM (ABS) DIAGNOSIS TSB Revision ANTI-LOCK BRAKING SYSTEM (ABS) 35B-84 INSPECTION PROCEDURE 2: Power Supply Circuit System . CIRCUIT OPERATION • The ABS-ECU is energized by the ignition switch (IG1) through multi-purpose fuse 23 and the • If the power supply to the ABS-ECU has failed, scan tool (MUT-III Sub Assembly) will not be able . TROUBLESHOOTING HINTS (The most • Damaged wiring harness or connector • Defective battery • Charging system failed • Malfunction of the hydraulic unit (integrated with ABS-ECU) JUNCTION IGNITION POWER ABS-ECU ABS-ECU Power Supply and Ground Circuit AC304742 A-02 (GR) CONNECTOR: A-02 HYDRAULIC UNIT AC AC305415 CONNECTORS : C-214, C-215 C-214 C-215 AW |