DTC U0121:00 [SELECTOR LEVER]

id0502z3908400

Outline

System malfunction location

CAN communication: Communication error with electronically controlled brake unit

Detection condition

•  The selector lever cannot receive a signal from the electronically controlled brake unit.

Fail-safe

Refer to the DTC table and fail-safe table according to the DTC. (See DTC TABLE [SELECTOR LEVER].)

Vehicle status when DTCs are output

Not applicable

Possible cause

•  Malfunction in CAN communication line between selector lever and electronically controlled brake unit

•  Selector lever malfunction

System wiring diagram

Not applicable

Connector diagram

Not applicable

System malfunction location	CAN communication: Communication error with electronically controlled brake unit
Detection condition	• The selector lever cannot receive a signal from the electronically controlled brake unit.
Fail-safe	Refer to the DTC table and fail-safe table according to the DTC. (See DTC TABLE [SELECTOR LEVER].)
Vehicle status when DTCs are output	Not applicable
Possible cause	• Malfunction in CAN communication line between selector lever and electronically controlled brake unit • Selector lever malfunction
System wiring diagram	Not applicable
Connector diagram	Not applicable

Diagnostic Procedure

• Perform the malfunction diagnosis according to the troubleshooting procedure for the multiplex communication system.(See CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW [L.H.D. (E)].) (See CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW [R.H.D.].)