Test B: The Set Speed Fluctuates

PINPOINT TEST B: THE SET SPEED FLUCTUATES

B1-B4:

B4-B5:

B6:

Normal Operation
The speed control actuator adjusts the speed control cable, which controls the throttle body.

Possible Causes
- Speed control cable
- Accelerator cable
- Speed control actuator
- Base engine concern
- Powertrain control module (PCM)