Operation CHARM: Car repair manuals for everyone.

SWM-E001




Condition







Control units communicate with each other over a network via a standardised serial method of communication - CAN (Controller Area Network) - and exchange information. Control units send and receive information. If control unit registers that communication is interrupted or defaults, diagnostic trouble code SWM-E001 is displayed

NOTE: During a communication fault the control unit cannot communicate. The diagnostic trouble code is only there to detect an intermittent fault.

Substitute value

- CAN communication blocked.

Possible source

- Defective control unit.

Fault symptom[s]

- Wiper only works on lowest speed.
- Front windscreen washer does not work.
- Rear window washer does not work.
- RTI buttons on steering wheel do not work.
- Telephone buttons on steering wheel do not work.
- Audio buttons on steering wheel do not work.
- Indicator switch does not work.