DTC U3000:4B

EPS CM

DETECTION CONDITION

• Abnormal temperature in EPS CM is detected

FAIL-SAFE FUNCTION

• Control is maintained in fail mode

• Power steering malfunction indicator light: Not illuminated

POSSIBLE CAUSE

• The EPS CM internal temperature exceeds the specified value due to steering wheel being held at lock and continuously, or other causes.

• EPS CM malfunction

SYSTEM WIRING DIAGRAM

Not applicable

Step

Inspection

Action

1

SWITCH THE IGNITION OFF AND ALLOW EPS CONTROL MODULE TO COOL DOWN.

2

• Clear the DTC from the memory.

  (See ELECTRIC POWER STEERING (EPS) ON-BOARD DIAGNOSIS.)

• Is the same DTC present?

  (See ELECTRIC POWER STEERING (EPS) ON-BOARD DIAGNOSIS.)

Yes

Repeat the inspection from Step 1.

If the malfunction recurs, replace the EPS CM.

(See STEERING WHEEL AND COLUMN REMOVAL/INSTALLATION.)

No

Go to the next step.

3

• Are any other DTCs output?

  (See ELECTRIC POWER STEERING (EPS) ON-BOARD DIAGNOSIS.)

Yes

Go to the applicable DTC inspection.

(See ELECTRIC POWER STEERING (EPS) ON-BOARD DIAGNOSIS.)

No

DTC troubleshooting completed.