Internal lights 1 (PWM3): Undefined fault Not used
â–¶ How to fix
1. Check the harness
What you'll see
No driver-visible symptom recorded.
System reaction
The PWM1 duty will decrease ?
Diagnostic depth
Detection
The demanded output for PWM3 (pin O1 A:23) is > 0% and < 100% but the feedback is too low in range 0,90V to 1,30V. (1,3V-2,0V is ok). 10 pendings for validation
Possible cause
1) The harness is short circuit to U30 2) The harness has an open circuit 3) Too many consumers (i.e.LEDs) are connected to the harness 4) Internal failure