Description of Activations

Description of activation

Hint: Not all the components/functions described need to be implemented in the control module. This varies between different systems and markets.

Parameters, value

Accelerator pedal (AP) position sensor, pulse width modulation (PWM) (%)
Measurement range 0-100 %.
The PWM signal from the accelerator pedal (AP) position sensor to the engine control module (ECM). The control module derives the value from the digital output for the accelerator pedal (AP) position sensor.
The value indicates the accelerator pedal (AP) position.
Approximately 5 %= the accelerator pedal (AP) completely released.
Approximately 80 %= the accelerator pedal (AP) completely depressed.

Throttle position (TP) sensor, potentiometer 1 (V)
The parameter can be read off to check the function when activating the "Throttle unit".
Measurement range 0-80 V.
The engine control module (ECM) derives the value from potentiometer 1 for the throttle position (TP) sensor.
The value must increase with increased throttle angle.
Approximately 0.5 V = throttle closed.
Approximately 4.0 V = wide open throttle (WOT).

Throttle position (TP) sensor, potentiometer 2 (V)
The parameter can be read off to check the function when activating the "Throttle unit".
Measurement range 0-80 V.
The engine control module (ECM) derives the value from potentiometer 2 for the throttle position (TP) sensor.
The value must decrease with an increased throttle angle.
Approximately 4.0 V = throttle closed.
Approximately 0.5 V = wide open throttle (WOT).

Component / function

Throttle unit

Note! The accelerator pedal must be pressed down at least 90% during the activation.

The throttle in the throttle unit opens depending on which activation has been selected (20, 40, 60 or 80 %).
Read off "Throttle position (TP) sensor, potentiometer 1" or "Throttle position (TP) sensor, potentiometer 2" to check the function.
The engine must be switched off at activation.

Air conditioning (A/C) relay
The air conditioning (A/C) relay is activated and powers the air conditioning (A/C) compressor.
A clicking noise should be heard from the air conditioning (A/C) relay on activation.

Engine cooling fan (FC)
The speed of the engine cooling fan (FC) changes depending on which activation is selected.
The fan can be heard.

Leak diagnostic unit, valve
Certain markets only.
A clicking noise is heard from the valve in the leak diagnostic unit at activation.

Evaporative emission system (EVAP) valve
The evaporative emission system (EVAP) valve opens and closes at a certain frequency.
The EVAP valve clicks.

Turbocharger (TC) control valve
Buzzing noise from the turbocharger (TC) control valve.