Lost Communication With Door Window Motor F
The ECU has lost communication with door window motor F, a smart window motor with its own bus interface. One-touch and anti-pinch operation of that window stops, and it may work only manually, if at all. Causes: loss of power or ground at the motor, a broken bus or supply wire in the door harness, a damaged door connector, or a failed motor module.
Affected components
- Window motor f
- Can bus
Common causes
- High likelihood: Module unpowered
- Low likelihood: Gateway module routing CAN messages incorrectly
- Low likelihood: CAN terminating resistor (120 Ω) drifted out of spec
Possible symptoms
- Multiple warning lights may illuminate
- Affected modules may go into limp mode or shut down
- Specific functions inoperative depending on module
- Diagnostic tools may show communication faults
Diagnostic notes
- The malfunction indicator lamp may illuminate
Related codes
Sources
Diagnostic information is provided for reference only. Confirm the code with a compatible scan tool and follow the vehicle manufacturer's service procedures before replacing components.