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Home >> Volvo >> 2003 >> S80 Base >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control Module (ECM) Diagnostic Trouble Codes - 10 Of 11 >> ECM-917F: Throttle Unit. Faulty Signal (B6294S2; B6294T; 2002) >> Diagnostic trouble code (DTC) information

Diagnostic trouble code (DTC) information

Condition 

Fig 1: Identifying Throttle Unit And Potentiometer
GLL105776Courtesy of VOLVO CARS OF NORTH AMERICA.

Diagnostic trouble code (DTC) ECM-917F is stored if the engine control module (ECM) registers, with the ignition on, the parameters for the throttle unit do not correspond to the previous adaptation and that one of the basic conditions for adaptation has not been met.

Substitute Value 

The engine control module (ECM) limits the torque using the fuel shut-off system.

Possible Source 

Faulty signal: 

Adaptation of the throttle unit is cancelled because one of the following basic requirements has not been met:

  1. Ignition on / engine off
  2. The battery voltage must be over 10 V
  3. Accelerator pedal (AP) unaffected
  4. The car must be stationary (no vehicle speed signal)
  5. Engine coolant temperature (ECT) between 5-100 °C
  6. Intake air temperature (IAT) above 5 °C.

Fault symptom[s]