9-3 Viggen Coupe (9400) L4-2.3L Turbo (B235) HO (1999)
The control module transmits the throttle position signal from pin 57. This is a PWM signal at 100 Hz that always has a pulse ratio of 9 % at idling speed
(approx. 1.2 V) and approx. 90 % at wide open throttle (approx. 12 V).
With the ignition on and the engine stationary, the pulse ratio will be 2-7 % and represents the engine coolant temperature.
The throttle position signal and temperature signal are used by the automatic transmission control module.
Diagnosis
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No diagnosis. However, TCM will generate a diagnostic trouble code and turn on CHECK GEARBOX if there is a break or short circuit.