Group 87 Climate Control, Fault Codes
Troubleshooting
MID 146 SID 12 Water Control Valve
T8009493
Component: A34 Climate Control Unit, E32 Climate
unit, F33 Fuse ECC climate unit
General information
The solenoid valve controls the amount of coolant which
flows through the heat exchanger. Control is by means
of electrical impulses from the control unit. The solenoid
valve is located in the climate control unit.
Fault code
FMI 3
Abnormally high voltage or short-circuit to higher voltage
Conditions for fault code:
•
If the control unit detects a short-circuit to voltage,
the control unit interprets this as an error and a fault
code is stored.
Possible cause:
•
Connector to water valve disconnected
•
Signal cable short-circuited to higher voltage
•
Ground lead short-circuited to higher voltage
Reaction from the control unit:
•
Fault code is stored
•
Yellow lamp requested
Noticeable external symptoms:
•
Yellow lamp lights up
•
No heat from the climate control unit
Appropriate check:
•
See “MID 146 SID 12 Water Control Valve, Check”
page 22
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