DTC U0402:00 [DYNAMIC STABILITY CONTROL (DSC)]
id0402b2881800
|
DTC
|
U0402:00
|
Abnormal message from transmission/transaxle
|
|
|
DETECTION CONDITION
|
• The DSC HU/CM received error signals from the transmission/transaxle for 1 s or more with the ignition switched ON (engine off or on).
|
||
|
FAIL-SAFE FUNCTION
|
• Illuminates the TCS/DSC indicator light and master warning light*1.
• Tire pressure monitoring system warning light illuminates after flashes.
• Inhibits the TCS, DSC, roll over mitigation (ROM), vehicle roll prevention function*2, hill launch assist (HLA), TPMS, smart city brake support (SCBS)*1, and secondary collision reduction (SCR) controls.
*1: Vehicles with smart city brake support (SCBS)
*2: ATX only
|
||
|
POSSIBLE CAUSE
|
• The transmission/transaxle could not send a normal signal temporarily. (DTCs are stored in the TCM.)
• TCM malfunction
|
||
|
SYSTEM WIRING DIAGRAM
|
—
|
||
Diagnostic procedure
|
STEP |
INSPECTION |
ACTION |
|
|---|---|---|---|
|
1
|
VERIFY DTCs FOR TCM
• Switch the ignition to off.
• Verify DTCs for the TCM using the M-MDS.
• Is the DTC displayed?
|
Yes
|
Repair the malfunctioning part according to the applicable DTC troubleshooting.
|
|
No
|
Go to the next step.
|
||
|
2
|
VERIFY THAT THE SAME DTC IS NOT PRESENT
• Clear DTC for the DSC HU/CM using the M-MDS.
• Are the same DTCs present?
|
Yes
|
Repeat the inspection from Step 1.
If the malfunction recurs, replace the TCM, then go to the next step.
|
|
No
|
Go to the next step.
|
||
|
3
|
VERIFY IF OTHER DTCs DISPLAYED
• Are any other DTCs displayed?
|
Yes
|
Repair the malfunctioning part according to the applicable DTC troubleshooting.
|
|
No
|
DTC troubleshooting completed.
|
||