DTC U0338:00/U0515:00 [EPS CONTROL MODULE]

id060230814500

DTC

U0338:00

CAN communication: signal error from start stop unit

U0515:00

DETECTION CONDITION

•  Error detected in signal from the start stop unit via CAN communication

FAIL-SAFE FUNCTION

•  Power steering malfunction indicator light does not Illuminate

•  EPS motor current control enabled

POSSIBLE CAUSE

•  Start stop unit malfunction

SYSTEM WIRING DIAGRAM

—

Diagnostic Procedure

Step

Inspection

Action

1

VERIFY START STOP UNIT DTC

•  Using the M-MDS, perform the start stop unit DTC inspection.
(See DTC INSPECTION [START STOP UNIT].)

•  Are any DTCs present?

Yes

Go to applicable DTC inspection.

(See DTC TABLE [START STOP UNIT].)

DTC troubleshooting completed, then go to the next step.

No

Go to the next step.

2

VERIFY DTC TROUBLESHOOTING COMPLETED

•  Using the M-MDS, clear the DTC from the EPS control module.
(See CLEARING DTC [EPS CONTROL MODULE].)

•  Using the M-MDS, perform the EPS control module DTC inspection.
(See DTC INSPECTION [EPS CONTROL MODULE].)

•  Is the same DTC present?

Yes

Repeat the inspection from Step1.

If the malfunction recurs, replace the start stop unit, then go to the next step.

(See START STOP UNIT REMOVAL/INSTALLATION.)

No

Go to the next step.

3

VERIFY NO DTC IS PRESENT

•  Are any DTCs present?

Yes

Go to applicable DTC inspection.

(See DTC TABLE [EPS CONTROL MODULE].)

No

DTC troubleshooting completed.

DTC	U0338:00	CAN communication: signal error from start stop unit
	U0515:00
DETECTION CONDITION		• Error detected in signal from the start stop unit via CAN communication
FAIL-SAFE FUNCTION		• Power steering malfunction indicator light does not Illuminate • EPS motor current control enabled
POSSIBLE CAUSE		• Start stop unit malfunction
SYSTEM WIRING DIAGRAM		—

Step	Inspection		Action
1	VERIFY START STOP UNIT DTC • Using the M-MDS, perform the start stop unit DTC inspection. (See DTC INSPECTION [START STOP UNIT].) • Are any DTCs present?	Yes	Go to applicable DTC inspection. (See DTC TABLE [START STOP UNIT].) DTC troubleshooting completed, then go to the next step.
1		No	Go to the next step.
2	VERIFY DTC TROUBLESHOOTING COMPLETED • Using the M-MDS, clear the DTC from the EPS control module. (See CLEARING DTC [EPS CONTROL MODULE].) • Using the M-MDS, perform the EPS control module DTC inspection. (See DTC INSPECTION [EPS CONTROL MODULE].) • Is the same DTC present?	Yes	Repeat the inspection from Step1. If the malfunction recurs, replace the start stop unit, then go to the next step. (See START STOP UNIT REMOVAL/INSTALLATION.)
2		No	Go to the next step.
3	VERIFY NO DTC IS PRESENT • Are any DTCs present?	Yes	Go to applicable DTC inspection. (See DTC TABLE [EPS CONTROL MODULE].)
3	VERIFY NO DTC IS PRESENT • Are any DTCs present?	No	DTC troubleshooting completed.