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Cruise Control Does Not Engage

  1. Ensure ALT and IGN fuses are okay. Turn ignition switch to RUN position. Turn on cruise control. Check for battery voltage at Pink/Black wire terminal of cruise control switch connector and cruise control module connector.
  2. If battery voltage is not present, repair Pink/Black wire. If battery voltage is present, check for battery voltage at Gray wire terminal of cruise control switch connector. If battery voltage is not present, replace cruise control switch.
  3. If battery voltage is present, check for battery voltage at Gray wire terminal of cruise control module connector. If battery voltage is not present, repair Gray wire. If battery voltage is present, check for battery voltage between Gray and Black wire terminals at cruise control module connector.
  4. If battery voltage is not present, repair Black wire. If battery voltage is present, check for battery voltage at Gray wire terminal of brake release switch No. 1 connector. If battery voltage is not present, repair Gray wire. If battery voltage is present, check for battery voltage at Tan wire terminal of brake release switch No. 2 connector.
  5. If battery voltage is not present, repair Tan wire. If battery voltage is present, check for battery voltage at Brown wire terminal of brake release switch No. 2 connector. If battery voltage is present, go to step 7). If battery voltage is not present, go to next step.
  6. Adjust brake release switches. See BRAKE & CLUTCH RELEASE SWITCHES  under ADJUSTMENTS. Replace brake release switches if they cannot be adjusted.
  7. Check for battery voltage at Brown wire terminal of brake release switch No. 1 connector. If battery voltage is present, go to next step. If battery voltage is not present, adjust brake release switches. See BRAKE & CLUTCH RELEASE SWITCHES  under ADJUSTMENTS. Replace brake release switches if they cannot be adjusted.
  8. Check for battery voltage at Dark Blue wire terminal of cruise control switch connector. If battery voltage is present, replace cruise control switch. If battery voltage is not present, check for battery voltage at Dark Blue wire terminal of cruise control switch connector while pressing SET switch.
  9. If battery voltage is not present, replace cruise control switch. If battery voltage is present, check for battery voltage at Dark Blue wire terminal of cruise control module connector. If battery voltage is not present, repair Dark Blue wire.
  10. If battery voltage is present, check for battery voltage at Dark Green wire terminal of cruise control switch connector while pressing RESUME/ACCEL switch. If battery voltage is not present, replace cruise control switch.
  11. If battery voltage is present, check for battery voltage at Dark Green wire terminal of cruise control module connector. If battery voltage is not present, repair Dark Green wire.
  12. If battery voltage is present, raise and support vehicle with drive wheels off of ground. While slowly turning drive wheels, check voltage between Pink/White and Dark Green wire terminals of cruise control module connector.
  13. If voltage pulses between zero and battery voltage, replace cruise control module. If voltage does not pulse between zero and battery voltage, or if no voltage is present, check vehicle speed sensor circuit.
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