Test D: Speed Control Switch Stuck or Circuit Failure

Pinpoint Test D: Speed Control Switch Stuck or Circuit Failure

Normal Operation

The PCM sends a signal through circuit 151 (LB/BK) to the speed control switches which passes through the clockspring. The return signal is sent through circuit 133 (BK) and the clockspring.

Possible Causes
- Circuit 133 (BK) open, short to ground or voltage
- Circuit 151 (LB/BK) open, short to ground or voltage
Clockspring
- PCM
- Speed control switches

Pinpoint Test D1:

Pinpoint Test D2:

Pinpoint Test D3:

Pinpoint Test D4:

Pinpoint Test D5:

Pinpoint Test D6:

Pinpoint Test D7:

Pinpoint Test D8 & D9:

Pinpoint Test D10:

Pinpoint Test D11:

Pinpoint Test D12 & D13:

Pinpoint Test D14: