C1601
C1601 BATTERY POWER SUPPLYDescription
EPS control unit receives power from the battery and then provides power to the EPS DC/DC converter and EPS motor control circuit. (Or EPS control unit receives power for EPS DC/DC converter and EPS motor control circuit from the battery.)
DTC Logic
DTC DETECTION LOGIC
C1601:
DTC CONFIRMATION PROCEDURE
1. ERASE DTC MEMORY
With CONSULT-III
1. Record DTC.
2. Erase DTC once.
NOTE: After erasing DTC record, currently occurred DTC can be detected by reading out DTC again.
>> GO TO 2.
2. PERFORM DTC CONFIRMATION
With CONSULT-III
1. Turn the ignition switch ON (READY).
2. Steer 360° leftward and rightward slowly.
3. Return the steering wheel to the straight-ahead position.
4. Perform the self-diagnosis.
Is DTC "C1601" detected?
YES >> Proceed to STC-13, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis Procedure
1. CHECK EPS CONTROL UNIT POWER SUPPLY CIRCUIT
1. Turn the ignition switch OFF.
2. Disconnect EPS control unit harness connector.
3. Check the voltage between EPS control unit harness connector and ground.
Is the inspection result normal?
YES >> GO TO 2.
NO >> ^ Check the following. If any items are damaged, repair or replace damaged parts.
- 10A fuse (#63)
- Harness for short or open between battery and EPS control unit harness connector
2. CHECK EPS CONTROL UNIT GROUND CIRCUIT
1. Turn the ignition switch OFF.
2. Disconnect EPS control unit harness connector.
3. Check the continuity between EPS control unit harness connector and ground.
Also check harness for short to ground and short to power.
Is the inspection result normal?
YES >> Replace EPS control unit.
NO >> Repair open circuit or short to ground or short to power in harness or connectors.
Special Repair Requirement
1. INITIALIZE EPS MOTOR ANGLE SENSOR AND CALIBRATE TORQUE SENSOR AGAIN
Always perform EPS motor angle sensor initialization and torque sensor calibration after replacing EPS control unit or steering gear assembly. Refer to STC-5, "EPS MOTOR ANGLE SENSOR INITIALIZATION AND TORQUE SENSOR CALIBRATION: Special Repair Requirement". EPS Motor Angle Sensor Initialization and Torque Sensor Calibration
>> END