Test J: The Speed Control is Inoperative

PINPOINT TEST J: THE SPEED CONTROL IS INOPERATIVE

J1-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
- circuit 151 (LB/BK) open, short to power, or short to ground
- circuit 848 (DG/OG) open, short to power, or short to ground
- clockspring
- PCM
- speed control switch