ABS With TCS Trouble Code Charts For Warning Light Codes

TROUBLE CODE 56
- USE OF IMPROPER A.B.S. CONTROL MODULE SPECIFICATION, OR FAULTY G SENSOR-

DIAGNOSIS:
- Improper A.B.S. control module specification
- Faulty G sensor
- Faulty G sensor harness and connector





TROUBLE SYMPTOM:
- A.B.S. does not operate.
- A.B.S. activates faster than specifications when braking on high "M" (dry asphalt) road.
- Warning light comes on and trouble code "56" is displayed approximately 20 seconds after vehicle starts.





1. CHECK CONTINUITY IN G SENSOR CIRCUIT ON A.B.S. CONTROL MODULE SIDE.
1) Position vehicle on a flat surface.
2) Disconnect connector from A.B.S. control module.
3) Disassemble connector.
4) Measure resistance between A.B.S. control module connector terminals.

Connector & terminal / Specified Resistance:
(P4) No.1 - No.13 / 550 - 670 ohms





2. CHECK G SENSOR.
1) Disconnect G sensor connector.
2) Measure resistance between G sensor terminals.
(Ensure that G sensor is horizontal during measurement.)

Specified Resistance:
550 - 670 ohms





3. CHECK HARNESS BETWEEN A.B.S. CONTROL MODULE AND G SENSOR.
1) Turn ignition switch ON.
2) Connect G sensor connector.
3) Measure voltage between connector and body.

Connector & terminal I Specified Voltage:
(B13) No.1 - Body / 10 - 12 V
(P4) No.13 - Body / 10 - 12 V

NOTE: When voltage checks out "OK", replace A.B.S. control module.