DTC 52

TROUBLE CODE 52
- FAULTY HYDRAULIC MOTOR AND/OR MOTOR RELAY-

DIAGNOSIS:
- Faulty motor relay
- Faulty hydraulic unit
- Faulty harness
- Faulty A.B.S. control module





TROUBLE SYMPTOM:
- A.B.S. does not operate.





1. CHECK POWER SUPPLY CIRCUIT OF A.B.S. CONTROL MODULE.
1) Turn ignition switch OFF.
2) Disconnect connector from A.B.S. control module.
3) Turn ignition switch ON.
4) Measure voltage between A.B.S. control module connector terminals.

Connector & terminal / Specified voltage:
(P4) No.1 - No.20 / 10 - 12 V





2. CHECK OUTPUT VOLTAGE OF A.B.S. CONTROL MODULE.
1) Turn ignition switch OFF.
2) Disconnect connector from A.B.S. control module.
3) Disconnect connector cover from connector.
4) Connect connector to A.B.S. control module.
5) Turn ignition switch ON.
6) Measure voltage between A.B.S. control module connector terminals.

Connector & terminal / Specified voltage:
(P4) No.17 - No.20 / 10 - 12 V





3. CHECK HARNESS CONNECTOR BETWEEN A.B.S. CONTROL MODULE AND HYDRAULIC UNIT.
1) Turn ignition switch OFF.
2) Disconnect connector from A.B.S. control module.
3) Disconnect connector from hydraulic unit.
4) Measure resistance between A.B.S. control module connector and hydraulic unit connector.

Connector & terminal / Specified resistance:
(P4) No.17 - (F43) No.6 / 0 ohms
(P4) No.28 - (F43) No.5 / 0 ohms
(P4) No.14 - (F43) No. 7 / 0 ohms





4. CHECK POWER SUPPLY CIRCUIT OF HYDRAULIC UNIT.
1) Turn ignition switch OFF.
2) Disconnect connector from hydraulic unit.
3) Measure voltage between hydraulic unit connector and body.

Connector & terminal / Specified voltage:
(F1) No.2 - Body / 10 - 12 V





5. CHECK MOTOR RELAY.
1) Remove motor relay.
2) Attach circuit tester probes to terminals, as shown in figure.
3) Measure resistance between terminals.

Terminal / Specified resistance:
No.30 - 87 / 0 ohms (when 12 volts applied.)
No.30 - 87 / 1 Mohms min. (when no voltage is applied.)