C1604

TROUBLE DIAGNOSIS FOR SYSTEM


DTC C1604 TORQUE SENSOR


CONSULT-III REFERENCE VALUE IN DATA MONITOR MODE






TERMINALS AND REFERENCE VALUES FOR EPS CONTROL UNIT
Refer to Pinout Values and Diagnostic Parameters.

DIAGNOSTIC PROCEDURE
1.CHECK TORQUE SENSOR SIGNAL

With CONSULT-III
1. Start engine.
2. Select "DATA MONITOR" mode for "EPS" with CONSULT-III.
3. Check the value of "TORQUE SENSOR". Refer to EPS Control Unit Input/Output Signal Reference Value.

Without CONSULT-III
1. Start engine.
2. Check voltage between EPS control unit harness connector M53 terminals 4, 5, 6, 7 and ground. Refer to Pinout Values and Diagnostic Parameters.
OK or NG
OK >> GO TO 3.
NG >> GO TO 2.
2.CHECK HARNESS AND CONNECTOR
1. Turn ignition switch "OFF".
2. Disconnect EPS control unit harness connector and torque sensor harness connector.





3. Check continuity between EPS control unit harness connector
(A) M53 terminals 4, 5, 6, 7 and torque sensor harness connector (B) M63 terminals 1, 2, 3, 4.





Also check harness for short to ground and short to power.
4. Connect EPS control unit harness connector and torque sensor harness connector.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace damaged parts.
3.CHECK EPS CONTROL UNIT
Check EPS control unit input/output signal. Refer to EPS Control Unit Input/Output Signal Reference Value.
OK or NG
OK >> GO TO 4.
NG >> Check EPS control unit pin terminals for damage or loose connection with harness connector. If any items are damaged, repair or replace damaged parts.
4.CHECK DTC
Perform the self-diagnosis, after driving the vehicle for a while.
OK or NG
OK >> INSPECTION END
NG >> Torque sensor is malfunctioning. Replace steering column assembly. Refer to Service and Repair.