Here is the a real repair case from a workshop mechanic friend.His customer feedback the the fan run with high speed,can not accelerate and water temperature can not display.And for more VW repair,please check Volkswagen Repair Cases.
Preparation:
Newest ODIS-E Engineering 17.0.1/12.2.0/9.0.1 Free Download
08.2023 VW ODIS 23.0.5 & 7.2.1 & 5.2.7 Diagnostic Software Free Download
He diagnosed Volkswagen Magotan with ODIS,and find below diagnostic code:
P0118:Engine coolant temperature (ECT) sensor 1–circuit high
P2185:Engine coolant temperature (ECT) sensor 2–circuit high
P0113:Intake Air Temperature Sensor 1 Circuit High
Symptoms:
Fan run with high speed
Can not accelerate
Water temperature can not display
Diagnostic Procedures:
Check the circuit diagram and found the trouble sensor have a common ground in the ECU.Then mechanic ensured there is no open circuit at wire.So we can consider it may get trouble in the ECU PCB.
Remove ECU from Volkswagen and disassemble PCB,found a break line on the PCB,re-solder it.
And then check the capacitance status (short circuit) and triode work correctly.
Reinstall all part back on vehicle,then clear DTCs and vehicle now can work fine!