DTC U0423:00 [ELECTRIC POWER STEERING (EPS)]

id0602a1818300

DTC U0423:00

Signal (engine switch status) error from instrument cluster

DETECTION CONDITION

•  Error detected in signal from instrument cluster via CAN communication

FAIL-SAFE FUNCTION

•  Control enabled

―  If the EPS CM detects the signal that a engine speed is below the specified value, it disables assistance

•  Power steering malfunction indication: Not illuminated/indicated

―  If the EPS CM detects the signal that a engine speed is below the specified value, it illuminates the power steering malfunction indication

POSSIBLE CAUSE

•  Instrument cluster malfunction

SYSTEM WIRING DIAGRAM

Not applicable

Diagnostic Procedure

Step

Inspection

Action

1

INSPECT FOR INSTRUMENT CLUSTER MALFUNCTION

•  Using the M-MDS, perform the DTC inspection for the instrument cluster.
(See DTC INSPECTION [INSTRUMENT CLUSTER].)

•  Are any DTCs detected?

Yes

Go to applicable DTC inspection.

(See DTC TABLE [INSTRUMENT CLUSTER].)

DTC troubleshooting completed, then go to the next step.

No

Go to the next step.

2

VERIFY THAT THE SAME DTC IS NOT PRESENT

•  Clear the DTC from the memory.
(See ELECTRIC POWER STEERING (EPS) ON-BOARD DIAGNOSIS [ELECTRIC POWER STEERING (EPS)].)

•  Is the same Pending DTC present?
(See ELECTRIC POWER STEERING (EPS) ON-BOARD DIAGNOSIS [ELECTRIC POWER STEERING (EPS)].)

Yes

Replace the EPS CM.

(See STEERING WHEEL AND COLUMN REMOVAL/INSTALLATION.)

No

DTC troubleshooting completed.

DTC U0423:00	Signal (engine switch status) error from instrument cluster
DETECTION CONDITION	• Error detected in signal from instrument cluster via CAN communication
FAIL-SAFE FUNCTION	• Control enabled ― If the EPS CM detects the signal that a engine speed is below the specified value, it disables assistance • Power steering malfunction indication: Not illuminated/indicated ― If the EPS CM detects the signal that a engine speed is below the specified value, it illuminates the power steering malfunction indication
POSSIBLE CAUSE	• Instrument cluster malfunction
SYSTEM WIRING DIAGRAM	Not applicable

Step	Inspection		Action
1	INSPECT FOR INSTRUMENT CLUSTER MALFUNCTION • Using the M-MDS, perform the DTC inspection for the instrument cluster. (See DTC INSPECTION [INSTRUMENT CLUSTER].) • Are any DTCs detected?	Yes	Go to applicable DTC inspection. (See DTC TABLE [INSTRUMENT CLUSTER].) DTC troubleshooting completed, then go to the next step.
1		No	Go to the next step.
2	VERIFY THAT THE SAME DTC IS NOT PRESENT • Clear the DTC from the memory. (See ELECTRIC POWER STEERING (EPS) ON-BOARD DIAGNOSIS [ELECTRIC POWER STEERING (EPS)].) • Is the same Pending DTC present? (See ELECTRIC POWER STEERING (EPS) ON-BOARD DIAGNOSIS [ELECTRIC POWER STEERING (EPS)].)	Yes	Replace the EPS CM. (See STEERING WHEEL AND COLUMN REMOVAL/INSTALLATION.)
2		No	DTC troubleshooting completed.