Pinpoint Tests

PINPOINT TEST J: THE SPEED CONTROL IS INOPERATIVE

J1-J2:

J2-J3:

J4-J7:

J7-J8:

J9-J10:

J11-J13:

Normal Operation
The PCM sends a signal through circuit 151 (LB/BK) to the speed control switches which pass through the clockspring. The return signal is sent through circuit 848 (DG/OG) and the clockspring.

Possible Causes
- Fuse
- Circuit 151 (LB/BK) open, short to voltage, or short to ground
- Circuit 848 (DG/OG) open, short to voltage, or short to ground
- Clockspring
- PCM
- Speed control switch