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Symptom Chart

SYMPTOM CHART

Condition Possible Sources Action
No communication with the speed control servo
  • Central junction box fuse (CJB) 10 (15A).
  • Circuitry.
  • Speed control servo.
 Go To PINPOINT TEST A .
The speed control is inoperative - unable to enter self-test
  • CJB fuse 10 (15A).
  • Circuitry.
  • Speed control servo.
 Go To PINPOINT TEST B .
The speed control is inoperative - no DTCs
  • Circuitry.
  • Speed control switch.
  • Speed control servo.
 Go To PINPOINT TEST G .
The set speed fluctuates
  • Anti-lock brake control module.
  • Speed control cable.
  • Throttle lever.
  • Speed control servo.
 Go To PINPOINT TEST H .
The coast switch is inoperative
  • Speed control switch.
  • Speed control servo.
 Go To PINPOINT TEST J .
The SET/ACCEL switch is inoperative
  • Speed control switch.
  • Speed control servo.
 Go To PINPOINT TEST K .
The RESUME switch is inoperative
  • Speed control switch.
  • Speed control servo.
 Go To PINPOINT TEST L .
The OFF switch is inoperative
  • Speed control switch.
  • Speed control servo.
 Go To PINPOINT TEST M .
The speed control indicator lamp is always on
  • Speed control servo.
  • Instrument cluster.
 Go To PINPOINT TEST O .
The speed control indicator lamp is inoperative
  • Speed control servo.
  • Instrument cluster.
  • Circuitry.
 REFER to INSTRUMENT CLUSTER .
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