DTC U0401:68 [LASER SENSOR]

id0402c4895000

DTC
U0401:68
Abnormal message from PCM
DETECTION CONDITION
•  Correct data cannot be received from PCM
FAIL-SAFE FUNCTION
•  Inhibits the Smart City Brake Support (SCBS) controls.
•  Illuminates the Smart City Brake Support (SCBS) indicator light (amber)
POSSIBLE CAUSE
•  PCM malfunction
SYSTEM WIRING DIAGRAM
Not applicable

Diagnostic procedure

STEP

INSPECTION

ACTION
1
INSPECT FOR PCM MALFUNCTION
•  Switch the ignition off.
•  Using the M-MDS, perform the DTC inspection for the PCM.
•  Are any DTCs detected?
Yes
Go to applicable DTC inspection.
(See DTC TABLE [SKYACTIV-G 1.5, SKYACTIV-G 2.0, SKYACTIV-G 2.5].)
(See DTC TABLE [SKYACTIV-D 1.5].)
(See DTC TABLE [SKYACTIV-D 2.2].)
No
Go to the next step.
2
VERIFY THAT SAME DTC IS NOT PRESENT
•  Clear the DTCs from the memory.
•  Are the same DTCs present?
Yes
Repeat the inspection from Step 1.
If the malfunction recurs, replace the PCM, then go to the next step.
(See PCM REMOVAL/INSTALLATION [SKYACTIV-G 1.5, SKYACTIV-G 2.0, SKYACTIV-G 2.5].)
(See PCM REMOVAL/INSTALLATION [SKYACTIV-D 1.5].)
(See PCM REMOVAL/INSTALLATION [SKYACTIV-D 2.2].)
No
Go to the next step.
3
VERIFY THAT NO OTHER DTCs ARE PRESENT
•  Are any other DTCs output?
Yes
Go to the applicable DTC inspection.
(See ON-BOARD DIAGNOSIS [LASER SENSOR].)
No
DTC troubleshooting completed.