#
DTC U0121 [L3]

id0302a4802800

DTC | U0121 | ABS/DSC communication
DETECTION CONDITION | 4WD CM detects that communication signals (four-wheel speed, ABS/DSC operation condition, and coupling torque request signals) from DSC HU/CM are abnormal.
POSSIBLE CAUSE | • DSC HU/CM signals have communication error.

## Diagnostic Procedure

• Inspect according to the diagnostic procedure in Section 09. (See MULTIPLEX COMMUNICATION SYSTEM.)