Test B

PINPOINT TEST B: THE SPEED CONTROL SWITCH IS INOPERATIVE

Test B1-B3:

Test B4-B6:

Test B6-B9:

Normal Operation
The powertrain control module (PCM) sends a signal through circuit 7-P624 (YE/BU) to the speed control switches which passes through the clockspring. The return signal is sent through circuit 31S-PG24 (BK/OG) and the clockspring.

Possible Causes
- circuit 7-PG24 (YE/BU) open, shorted to power or shorted to ground
- circuit 31S-PG24 (BK/OG) open, shorted to power or shorted to ground
- clockspring
- PCM
- speed control switch