Electrically controlled coolant pump(V124)
â–¶ How to fix
Check the belt drive tension Replace the controllable coolant pump (V124). Verify that the fault is fixed using SDP3 ( V124)
What you'll see
No driver-visible symptom recorded.
System reaction
The pump coupling is not working correctly and the cooling capacity is therefore reduced. Can lead to reduced engine torque
Diagnostic depth
Detection
The speed of the coolant pump is lower than the demanded speed
Possible cause
- Too little or no oil in the pump coupling due to leakage. - The viscosity of the oil in the pump coupling has decreased. - Low tension in the belt drive