VOLVO
TCM-001C - Kickdown switch (KD). Signal too low
Układ
Sterownik automatycznej skrzyni biegów (TCM)
Modele Volvo, których dotyczy ten kod błędu
Dotyczy następujących modeli:
2 modeleS40 (1996–2004), V40 (1996–2004)
Pokaż modele wg rocznika i silnika (2)
Co oznacza ten kod błędu?
The control module registers a signal that is too low from the kickdown switch, which means the kickdown circuit is short-circuited to ground when the throttle is less than a certain amount open. The signal is used, among other things, for downshifts during rapid acceleration, and the kickdown function does not work while the fault is present.
Możliwe przyczyny
- Signal wire short-circuited to ground
- Defective kickdown switch
- Faulty signal from the throttle position sensor
Co możesz zrobić
- 1With a diagnostic tool, read the kickdown switch position in live data; it should show ON only at full pedal press to the kickdown position, and OFF otherwise
- 2With a diagnostic tool, read the kickdown switch and the throttle sensor together; the switch should show OFF when the pedal is pressed down just short of kickdown
- 3Check that the pedal, the accelerator cable and the throttle move freely, and that the throttle opens fully when the pedal is pushed to kickdown
- 4Check that the kickdown switch or the cable sleeve does not stick or move stiffly, so that the switch cannot get stuck in the pressed position
- 5If the fault remains, have a workshop measure the kickdown switch against ground and replace the accelerator cable with kickdown switch if needed
Objawy, które możesz zauważyć2
- The kickdown function does not work
- The automatic transmission warning light blinks
Na co może wpływać usterka1
- No substitute values are used in the control module for the kickdown function
Ogólne wskazówki dla właścicieli. Diagnostyka na samochodzie może wskazać inną przyczynę.