DTC U0140:00 [HEAT PUMP CONTROL UNIT]


id0702l5718000


Outline

System malfunction location

Communication error with body control module (BCM)

Detection condition
•  The heat pump control unit cannot receive a CAN signal from the body control module.(BCM).
Fail-safe
•  The value of the data which is not received from the body control module (BCM) is fixed at the specified value.
Possible cause
•  Malfunction in CAN communication line between body control module (BCM) and heat pump control unit module
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.].)