C1606

TROUBLE DIAGNOSIS FOR SYSTEM


DTC C1606 EPS MOTOR


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 EPS MOTOR SIGNAL

With CONSULT-III
1. Start engine.
2. Select "DATA MONITOR" mode for "EPS" with CONSULT-III.
3. Check the values of "MOTOR SIG" and "MOTOR CURRENT". Refer to EPS Control Unit Input/Output Signal Reference Value,

OK or NG
OK >> GO TO 3.
NG >> GO TO 2.
2.CHECK EPS MOTOR
1. Turn ignition switch "OFF".
2. Disconnect EPS control unit harness connector.





3. Check resistance between EPS control unit harness connector
(A) terminals.





4. Connect EPS control unit harness connector.
OK or NG
OK >> GO TO 3.
NG >> EPS motor is malfunctioning. Replace steering column assembly. Refer to Service and Repair.
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 >> GO TO 3.