Power Supply And Ground Circuit

POWER SUPPLY AND GROUND CIRCUIT





Description
Supplies power to ABS actuator and electric unit (control unit).




Diagnosis Procedure
1.CHECK ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) IGNITION POWER SUPPLY
1. Turn the ignition switch OFF.
2. Disconnect ABS actuator and electric unit (control unit) harness connector.
3. Check the voltage between ABS actuator and electric unit (control unit) harness connector and ground.





4. Turn the ignition switch ON.

CAUTION:
Never start the engine.
5. Check the voltage between ABS actuator and electric unit (control unit) harness connector and ground.





Is the inspection result normal?
YES - GO TO 3.
NO - GO TO 2.
2.CHECK ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) POWER SUPPLY CIRCUIT
1. Check the 10A fuse (#45).
2. Disconnect IPDM E/R harness connector.
3. Check the continuity between ABS actuator and electric unit (control unit) harness connector and IPDM E/R harness connector.





4. Check the continuity between ABS actuator and electric unit (control unit) harness connector and ground.





Is the inspection result normal?
YES - Perform the trouble diagnosis for ignition power supply circuit. .
NO - Repair or replace error-detected parts.
3.CHECK ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) POWER SUPPLY
1. Turn the ignition switch OFF.
2. Check the 50A fuse (M) and 30A fuse (L).
3. Check the voltage between ABS actuator and electric unit (control unit) harness connector and ground.





Is the inspection result normal?
YES - GO TO 4.
NO - Perform the trouble diagnosis for battery power supply circuit. .
4.CHECK ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) GROUND
Check the continuity between ABS actuator and electric unit (control unit) harness connector and ground.





Is the inspection result normal?
YES - INSPECTION END
NO - Repair or replace error-detected parts.