DTC U0401:68 [INSTRUMENT CLUSTER]

id0902e8988800

Description

Error signal received from PCM
Detection condition
•  Instrument cluster receives the error signals from the PCM with the ignition switched ON (engine off or on).
Fail-safe function
Not applicable
Possible cause
•  DTCs are stored in the PCM.
•  PCM malfunction
•  Instrument cluster malfunction
System wiring diagram
Not applicable

Diagnostic Procedure

Step

Inspection

Action
1
VERIFY PCM DTCs
•  Retrieve the PCM DTCs using the M-MDS.
•  Are any DTCs displayed?
Yes
Repair or replace the malfunctioning part according to the applicable DTC troubleshooting.
(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].)
(See DTC TABLE [MZR 1.6].)
No
Go to the next step.
2
PERFORM DTC INSPECTION AND VERIFY PCM MALFUNCTION
•  Clear the DTC for the instrument cluster using the M-MDS.
•  Switch the ignition ON (engine off or on) and wait for 20 s or more.
•  Retrieve the instrument cluster DTCs using the M-MDS.
•  Is the same DTC displayed?
Yes
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].)
(See PCM REMOVAL/INSTALLATION [MZR 1.6].)
No
Go to Step 4.
3
VERIFY THAT REPAIRS HAVE BEEN COMPLETED
•  Clear the DTC for the instrument cluster using the M-MDS.
•  Switch the ignition ON (engine off or on) and wait for 20 s or more.
•  Retrieve the instrument cluster DTCs using the M-MDS.
•  Is the same DTC displayed?
Yes
Repeat the inspection from Step 1.
•  If the malfunction recurs, replace the instrument cluster.
Go to the next step.
No
Go to the next step.
4
VERIFY IF OTHER DTCs DISPLAYED
•  Are any other DTCs displayed?
Yes
Repair or replace the malfunctioning part according to the applicable DTC troubleshooting.
(See DTC TABLE [INSTRUMENT CLUSTER].)
No
DTC troubleshooting completed.