DTC U0401:68 [ADVANCED KEYLESS AND START SYSTEM]
id0902e1399300
Description
Possible Causes
Diagnostic Procedure
Step |
Inspection |
Action |
|
---|---|---|---|
1
|
VERIFY PCM DTCs
• Perform the PCM DTC inspection using the M-MDS.
(See MZ-CD 1.6.)
• Are any DTCs present?
|
Yes
|
Go to the applicable DTC inspection.
(See DTC TABLE [MZR 1.3, MZR 1.5].)
(See MZ-CD 1.6.)
|
No
|
Go to the next step.
|
||
2
|
PERFORM DTC INSPECTION AND VERIFY THAT MALFUNCTIONING PART IS PCM
• Clear the DTCs using the M-MDS.
• Perform the keyless control module DTC inspection using the M-MDS.
• Is the same DTC present?
|
Yes
|
Replace the PCM, then go to the next step.
|
No
|
Go to Step 4.
|
||
3
|
VERIFY TROUBLESHOOTING COMPLETED
• Clear the DTCs using the M-MDS.
• Perform the keyless control module DTC inspection using the M-MDS.
• Is the same DTC present?
|
Yes
|
Replace the keyless control module, then go to the next step.
|
No
|
Go to the next step.
|
||
4
|
VERIFY THAT NO OTHER DTCs ARE PRESENT
• Are any DTCs present?
|
Yes
|
Go to the applicable DTC inspection.
|
No
|
DTC troubleshooting completed.
|