DTC

U0420:68

Abnormal message from EPS control module

DETECTION CONDITION

• Correct data cannot be received from EPS CM

FAIL-SAFE FUNCTION

• Inhibits the smart city brake support (SCBS) controls.

• Illuminates the master warning light

• The message ”SCBS Inspection Required” is indicated in the display.

POSSIBLE CAUSE

• EPS CM malfunction

SYSTEM WIRING DIAGRAM

Not applicable

STEP

INSPECTION

ACTION

1

• Switch the ignition off.

• Using the M-MDS, perform the DTC inspection for the EPS control module.

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

• Are any DTCs detected?

Yes

Go to applicable DTC inspection.

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

No

Go to the next step.

2

• Clear the DTCs from the memory.

  (See ON-BOARD DIAGNOSIS [LASER SENSOR].)

• Are the same DTCs present?

Yes

Repeat the inspection from Step 1.

If the malfunction recurs, replace the EPS CM, then go to the next step.

(See STEERING WHEEL AND COLUMN REMOVAL/INSTALLATION.)

No

Go to the next step.

3

• Are any other DTCs output?

Yes

Go to the applicable DTC inspection.

(See ON-BOARD DIAGNOSIS [LASER SENSOR].)

No

DTC troubleshooting completed.