ECA PWM Feedback from CAN Incorrect
â–¶ How to fix
Check the wiring and connectors on the TMS (E5) and the ECA (E93) Check if there are other fault codes pertaining to the ECA and troubleshoot those. Renew the ECA (E93).
What you'll see
No driver-visible symptom recorded.
System reaction
No reaction
Diagnostic depth
Detection
An electrical PWM signal is sent from the TMS to the ECA for safety purposes. The ECA measures the PWM duty cycle and reports it to the TMS via the PWMFeedback signal on CAN. The TMS compares the PWMFeedback signal received to the PWM duty cycle sent. If the difference is bigger than a threshold value a fault code is set.
Possible cause
Possible short circuit or faulty ECU Hardware.