Volvo All Engines (2017 Emissions) Fault Code: P113F11 PID: EMS Buffered Idle Validation Switch Wire – VECU Side

Volvo All Engines (2017 Emissions) Fault Code: P113F11 PID: EMS Buffered Idle Validation Switch Wire – VECU Side

The Idle Validation Switch is open at the idle position and transmits no voltage to the (VECU) Vehicle Electronic Control Unit. At approximately 1-13% pedal position the Idle Validation Switch closes and completes the circuit to the (VECU) Vehicle Electronic Control Unit.
The (VECU) Vehicle Electronic Control Unit then sends a voltage signal to the Engine Control Module (ECM) indicating accelerator pedal position. If both communication links (J1939, J1587) are faulty the pedal demand functionality enters limp-home. During limp-home the (IVS) Idle Validation Switch is used for ramping requested torque.

Conditions for diagnostic trouble code (DTC):
1) A diagnostic trouble code (DTC) is set if the output signal from the buffered idle validation (IV) switch diverges from the input signal from idle validation (IV) switch 1
2) Accelerator pedal pressed down more than 15 %
3) The voltage at pin EI:8 is less than 4 V

Probable cause
1) Signal wire
2) Vehicle Control Unit (VECU)
3) Engine control module (ECM)