CEM-5F43

Condition
If the power supply from the control unit to the fuel pump, water pump and heater fan is short-circuited to ground or if there is an open circuit, the control unit will interpret this as a fault, and diagnostic trouble code CEM-5F43 will be set.

Condition
None.

Possible source
- Contact resistance in control unit connector.
- Voltage supply circuit short-circuited to ground.
- Open circuit in power supply wire.

Condition
- Poor interior heating.