8: Actuator Motor, Motor Relay, and Circuit

Inspection 8: Actuator Motor, Motor Relay, and Circuit
Inspection Procedure
1. CHECK SELF-DIAGNOSTIC RESULTS (1)





Check self-diagnostic results.
Do "PUMP MOTOR" and "MOTOR RELAY SYSTEM" appear in self-diagnostic results display?
YES >>GO TO 2.
NO >>INSPECTION END

2. CHECK SELF-DIAGNOSTIC RESULTS (2)
1. Turn ignition switch OFF and disconnect VDC/TCS/ABS control unit connector and VDC relay box connectors.
2. Reconnect connectors securely and perform self-diagnosis again.
Do any self-diagnosis items appear?
YES >>GO TO 3.
NO >>Poor connection. Repair or replace connector.

3. CHECK ABS MOTOR AND MOTOR RELAY POWER SYSTEM
1. Turn ignition switch OFF and disconnect VDC relay box connector (E48).








2. Check voltage between VDC relay box harness connector E48 and ground.
OK or NO
OK >> GO TO 4.
NO >>
^ Check fuse 50A.
^ Make sure there is continuity between battery positive terminal and VDC relay box harness connector E48 terminal No.10 (W/R).

4. CHECK ABS MOTOR AND MOTOR RELAY CIRCUIT
1. Turn ignition switch OFF and disconnect VDC/TCS/ABS control unit connector and VDC relay box connector (E47).








2. Check for continuity between VDC/TCS/ABS control unit harness connector M93 and VDC relay box harness connector E47.
OK or NG
OK >> GO TO 5.
NG >> Open or short in harness between VDC/TCS/ABS control unit and VDC relay box

5. CHECK ACTUATOR MOTOR





Check if actuator motor operates after energizing approximately 12V to the connector terminal 15 at the VDC relay box harness connector E222.

CAUTION: To prevent overheating, do not drive actuator motor more than 4 seconds.

OK or NG
OK >> GO TO 6.
NG >> Actuator motor or actuator motor circuit open or short in harness. Replace VDC actuator.

6. CHECK MOTOR RELAY UNIT
Check motor relay as a unit. Refer to "ABS MOTOR RELAY AND ACTUATOR RELAY".
OK or NG
OK >> Replace VDC actuator.
NG >> Replace VDC relay box (motor relay).