DTC U2133:00 [HEAT PUMP CONTROL UNIT]

id0702l5718100

Outline

System malfunction location

Communication error with climate control unit

Detection condition

•  The heat pump control unit cannot receive a CAN signal from the climate control unit.

Fail-safe

•  The value of the error signal is fixed at the specified value.

Possible cause

•  Malfunction in CAN communication line between climate control unit and heat pump control unit

System wiring diagram

Not applicable

System malfunction location	Communication error with climate control unit
Detection condition	• The heat pump control unit cannot receive a CAN signal from the climate control unit.
Fail-safe	• The value of the error signal is fixed at the specified value.
Possible cause	• Malfunction in CAN communication line between climate control unit and heat pump control unit
System wiring 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.].)