VOLVO
KVM-B137231 - Left Rear Door Handle Unlock Circuit. FM (Frequency Modulated) / PWM (Pulse Width Modulated) Failures. No signal
Układ
Moduł dostępu bezkluczykowego (KVM)
Modele Volvo, których dotyczy ten kod błędu
Dotyczy następujących modeli:
5 modeliS60 (2011–), V40 (2013–), V40 Cross Country (2013–), V60 (2011–), V60 Cross Country (2015–)
Co oznacza ten kod błędu?
Each outer door handle has a lock sensor and an unlock sensor, and the keyless vehicle module (KVM) monitors them. The code is stored when the unlock signal from the left rear handle is missing or wrong. Unlocking from that handle may then fail, and the fault appears while the engine runs and the car is being driven.
Możliwe przyczyny
- Signal wire shorted to supply voltage
- Signal wire shorted to ground
- Open circuit in the signal wire
Co możesz zrobić
- 1Read and clear the code, then run the engine to see whether it returns
- 2Check the fuse for the circuit
- 3With the ignition off, check with a multimeter that the common handle-sensor ground wire is not shorted to supply voltage or ground
- 4Use a multimeter to check that the wires between the left rear handle and the KVM have no open circuit and no short to supply voltage or ground
- 5If you have a diagnostic tool: check the unlock sensor in live data and see that the value changes when you pull and release the handle
- 6Have a workshop replace the handle if the wiring is sound, and the KVM if the fault stays. If the fault remains after the replacement, the KVM may need replacing
Objawy, które możesz zauważyć1
- Locking, unlocking and central locking do not work
Ogólne wskazówki dla właścicieli. Diagnostyka na samochodzie może wskazać inną przyczynę.