Checking the output signal of the ACM drive
Check the voltage between terminals 18, 19, 22, 25 of the ACM control unit and «weight».
Voltage:
- At idle speed: approx. 11V
- At 2000 rpm: approx. 12V
In the event of a malfunction, check:
Power circuit and output signal circuit.
All sensor circuits (see wiring diagram at the beginning of the chapter).
Damage or tight connection of the connectors of the ACM control unit.
Checking the ACM drive
Check the resistance between tracks 2 and 3 of the drive.
- Resistance at normal temperature: Approx. 0.5Σ