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) IGNITION POWER SUPPLY CIRCUIT
1.Turn the ignition switch OFF.
2.Check the 10A fuse (#45).
3.Disconnect IPDM E/R harness connector.
4.Check the continuity between ABS actuator and electric unit (control unit) harness connector and IPDM E/
R harness connector.
5.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. Refer to "Wiring Diagram IGNITION POWER SUPPLY -" Ignition Power Supply.
NO- Repair or replace error-detected parts.
3. CHECK ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) BATTERY POWER SUPPLY
1.Turn the ignition switch OFF.
2.Check the 50A fusible link (#M) and 30A fusible link (#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. Refer to "Wiring Diagram BATTERY POWER SUPPLY -" Battery Power Supply.
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.