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Test A: Cruise Control Inoperative/Malfunctioning: Notes

WARNING: This page is about a different car, the 2002 Pontiac Sunfire, 2002 Chevrolet Cavalier, 2001 Pontiac Sunfire, and 2001 Chevrolet Cavalier. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: To avoid misdiagnosis, ensure preliminary inspection and all checks have been performed. See TROUBLE SHOOTING  . Ensure proper operation of brakelight system.
  1. If cruise control diagnostic system check has been performed, go to next step. If cruise control diagnostic system check has not been performed, go to CRUISE CONTROL DIAGNOSTIC SYSTEM CHECK  under SELF-DIAGNOSTIC SYSTEM.
  2. Turn ignition switch to LOCK position. Disconnect Cruise Control Module (CCM) 10-pin harness connector. CCM is located at right front corner of engine compartment. Turn ignition switch to RUN position. Connect test light between ground and CCM harness connector terminal "F" (Pink wire). See Figure . If test light illuminates, go to next step. If test light does not illuminate, go to step  38 .
  3. Connect test light between CCM harness connector terminals "E" (Black/White wire) and "F" (Pink wire). If test light illuminates, go to next step. If test light does not illuminate, go to step  39 .
  4. Turn ignition switch to RUN position. Ensure cruise control switch is in OFF position. Connect test light between ground and CCM harness connector terminals "A" (Gray wire), "B" (Dark Blue wire) and "C" (Gray/Black wire). If test light does not illuminate at all terminals, go to next step. If test light illuminates at any terminal, go to step  18 .
  5. Turn ignition switch to RUN position. Turn cruise control on. Connect test light between ground and CCM harness connector terminal "A" (Gray wire). If test light illuminates, go to next step. If test light does not illuminate, go to step  19 .
  6. Connect test light between ground and CCM harness connector terminal "B" (Dark Blue wire). See Figure . Press and hold SET switch. If test light illuminates, go to next step. If test light does not illuminate, go to step  21 .
  7. Connect test light between ground and CCM harness connector terminal "C" (Gray/Black wire). Press and hold RESUME/ACCEL (R/A) switch. If test light illuminates, go to next step. If test light does not illuminate, go to step  22 .
  8. Connect test light between ground and CCM harness connector terminal "D" (Purple wire on A/T; Brown/White wire on M/T). If test light does not illuminate, go to next step. If test light illuminates, go to step  13 .
  9. If vehicle is equipped with M/T, go to next step. If vehicle is equipped with A/T, go to step  11 .
  10. Turn ignition switch to LOCK position. Disconnect cruise control clutch switch 2-pin harness connector. Cruise control clutch switch is located on clutch pedal support bracket. Turn ignition switch to RUN position. Connect test light between ground and cruise control clutch switch harness connector Brown wire terminal. If test light does not illuminate, go to next step. If test light illuminates, go to step  25 .
  11. Turn ignition switch to LOCK position. Disconnect cruise control brake switch 2-pin harness connector. Cruise control brake switch is located on brake pedal support bracket. See Figure . Turn ignition switch to RUN position. Connect test light between ground and cruise control brake switch harness connector Pink wire terminal. If test light illuminates, go to step  23 . If test light does not illuminate, go to step  31 .
  12. Press brake pedal while monitoring test light. If test light does not illuminate while pressing brake pedal, go to next step. If test light illuminates while pressing brake pedal, go to step  26 .
  13. Connect test light between ground and CCM harness connector terminal "G" (White wire). See Figure . If test light does not illuminate, go to next step. If test light illuminates, go to step  27 .
  14. Press brake pedal while monitoring test light. If test light illuminates while pressing brake pedal, go to next step. If test light does not illuminate while pressing brake pedal, go to step  25 .
  15. Connect test light between ground and CCM harness connector terminal "J" (Light Blue/Black wire). If test light illuminates, go to next step. If test light does not illuminate, go to step  29 .
  16. Connect scan tool to Data Link Connector (DLC). DLC is located on lower left side of instrument panel, near steering column. Connect test light between battery positive terminal and CCM harness connector terminal "H" (Dark Green wire). Using scan tool, command CRUISE CONTROL INHIBIT OFF. If test light illuminates with CRUISE CONTROL INHIBIT commanded OFF, go to next step. If test light does not illuminate with CRUISE CONTROL INHIBIT commanded OFF, go to step  30 .
  17. Inspect speedometer for correct operation. If speedometer operates correctly, go to step  32 . If speedometer does not operate correctly, diagnose and repair speedometer concern. See to appropriate testing in ANALOG INSTRUMENT PANELS article. For 2002, see ANALOG INSTRUMENT PANELS article.
  18. Check for short voltage in wire that caused test light to illuminate. If short to voltage does not exist, go to step  36 . If short to voltage exists in any wire, repair appropriate wire(s). After repairs, go to step  46 .
  19. Disconnect cruise control switch 4-pin harness connector located on multifunction switch. See CRUISE CONTROL SWITCH  under REMOVAL & INSTALLATION. Check for open or high resistance between CCM harness connector terminal "A" (Gray wire) and cruise control switch harness connector terminal "A"(Pink wire). Check for short to ground in wires between CCM harness connector terminals "B" (Dark Blue wire) and "C" (Gray/Black wire) and cruise control switch. See Figure . If problem does not exist, go to next step. If problem exists, repair as necessary. After repairs, go to step  46 .
  20. Check for open or high resistance in Pink wire between cruise control switch harness connector terminal "A" and CRUISE fuse (10-amp) cavity. CRUISE fuse is located in instrument panel fuse block. If open or high resistance does not exist, go to step  36 . If open or high resistance exists, repair Pink wire as necessary. After repairs, go to step  46 .
  21. Check for open or high resistance in Dark Blue wire between CCM harness connector terminal "B" and cruise control switch harness connector terminal "B". See Figure . If open or high resistance does not exist, go to step  36 . If open or high resistance exists, repair Dark Blue wire as necessary. After repairs, go to step  46 .
  22. Check for open or high resistance in Gray/Black wire between CCM harness connector terminal "C" and cruise control switch harness connector terminal "C". See Figure . If open or high resistance does not exist, go to step  36 . If open or high resistance exists, repair Gray/Black wire as necessary. After repairs, go to step  46 .
  23. Check cruise control brake switch for proper adjustment. If cruise control brake switch is properly adjusted, go to step  25 . If cruise control brake switch is not properly adjusted, adjust cruise control brake switch as necessary. See CRUISE CONTROL BRAKE SWITCH & BRAKE SWITCH  under ADJUSTMENTS. After repairs, go to step  46 .
  24. Check brake switch for proper adjustment. If cruise control brake switch is properly adjusted, go to step  28 . If cruise control brake switch is not properly adjusted, adjust cruise control brake switch as necessary. See CRUISE CONTROL BRAKE SWITCH & BRAKE SWITCH  under ADJUSTMENTS. After repairs, go to step  46 .
  25. Check for open or high resistance in cruise control brake switch harness connector Purple wire terminal and CCM harness connector terminal "D" (Purple wire on A/T; Brown/White wire on M/T). See Figure . If open or high resistance does not exist, go to step  33 . If open or high resistance exists, repair Purple wire, Brown wire or Brown/White wire between cruise control brake switch and CCM as necessary. After repairs, go to step  46 .
  26. Check for short to voltage in cruise control brake switch harness connector Purple wire terminal. If short or high resistance does not exist, go to step  33 . If short or high resistance exists, repair Purple wire, Brown wire or Brown/White wire between cruise control brake switch and CCM as necessary. After repairs, go to step  46 .
  27. Disconnect brake switch 2-pin harness connector located on brake pedal support. Brake switch is located on brake pedal support bracket. See Figure . Check for short in White wire between brake switch harness connector and CCM. If short to voltage does not exist, go to step  34 . If short to voltage exists, repair short to voltage in White wire between brake switch and CCM. After repairs, go to step  46 .
  28. Check for open or high resistance in brake switch harness connector White wire terminal. If open or high resistance does not exist, go to step  34 . If open or high resistance exists, repair White wire between brake switch and CCM as necessary. After repairs, go to step  46 .
  29. Check for open, high resistance or short to voltage in Light Blue/Black wire between Powertrain Control Module (PCM) harness connector C2 terminal No. 48 and CCM harness connector terminal "J". See Figure and Figure . If problem does not exist, go to step  35 . If problem exists, repair Light Blue/Black wire as necessary. After repairs, go to step  46 .
  30. Check for open, high resistance or short to voltage in Dark Green wire between CCM harness connector terminal "H" and PCM. See Figure . If problem does not exist, go to step  35 . If any problem exists, repair Dark Green wire between CCM and PCM as necessary. After repairs, go to step  46 .
  31. Check for open or high resistance in cruise control brake switch harness connector Pink wire terminal. If open or high resistance does not exist, go to step  33 . If open or high resistance exists, repair Pink wire between instrument panel fuse block and cruise control brake switch as necessary. After repairs, go to step  46 .
  32. Check for open or high resistance in Dark Green/White wire between PCM harness connector C2 terminal No. 16 and CCM harness connector terminal "K". See Figure and Figure . If open or high resistance does not exist, go to step  37 . If open or high resistance exists, repair Dark Green/White wire as necessary. After repairs, go to step  46 .
  33. Check for poor connections at appropriate harness connector(s). Repeat previous test while wiggling, disconnecting and reconnecting, and stressing appropriate harness connector(s). Pull on harness or wire to identify a separation/break inside wire insulation. This can often cause intermittent malfunction to appear. If problem does not exist, go to step  41 . If any problem exists, repair as necessary. After repairs, go to step  46 .
  34. Check for poor connections at brake switch harness connector. Repeat previous test while wiggling, disconnecting and reconnecting, and stressing appropriate harness connector. Pull on harness or wire to identify a separation/break inside wire insulation. This can often cause intermittent malfunction to appear. If problem does not exist, go to step  42 . If any problem exists, repair as necessary. After repairs, go to step  46 .
  35. Check for poor connections at PCM harness connector C2. Repeat previous test while wiggling, disconnecting and reconnecting, and stressing appropriate harness connector. Pull on harness or wire to identify a separation/break inside wire insulation. This can often cause intermittent malfunction to appear. If problem does not exist, go to step  43 . If any problem exists, repair as necessary. After repairs, go to step  46 .
  36. Check for poor connections at cruise control switch harness connector. Repeat previous test while wiggling, disconnecting and reconnecting, and stressing appropriate harness connector. Pull on harness or wire to identify a separation/break inside wire insulation. This can often cause intermittent malfunction to appear. If problem does not exist, go to step  44 . If any problem exists, repair as necessary. After repairs, go to step  46 .
  37. Check for poor connections at CCM harness connector. Repeat previous test while wiggling, disconnecting and reconnecting, and stressing appropriate harness connector. Pull on harness or wire to identify a separation/break inside wire insulation. This can often cause intermittent malfunction to appear. If problem does not exist, go to step  45 . If any problem exists, repair as necessary. After repairs, go to step  46 .
  38. Repair open or high resistance in Pink wire between CCM harness connector terminal "F" and instrument panel fuse block. After repairs, go to step  46 .
  39. Repair open or high resistance in Black/White wire between CCM harness connector terminal "E" and ground. Ground point is located at left side of engine/transmission. After repairs, go to step  46 .
  40. Repair open or high resistance in Pink wire between cruise control brake switch harness connector and instrument panel fuse block. After repairs, go to step  46 .
  41. Replace appropriate switch. See CRUISE CONTROL CLUTCH SWITCH (M/T)  or CRUISE CONTROL BRAKE SWITCH & BRAKE SWITCH  under REMOVAL & INSTALLATION. After repairs, go to step  46 .
  42. Replace brake switch. See CRUISE CONTROL BRAKE SWITCH & BRAKE SWITCH  under REMOVAL & INSTALLATION. After repairs, go to step  46 .
  43. Replace and program PCM. See POWERTRAIN CONTROL MODULE  under REMOVAL & INSTALLATION. After repairs, go to step  46 .
  44. Replace cruise control switch. See CRUISE CONTROL SWITCH  under REMOVAL & INSTALLATION. After repairs, go to step  46 .
  45. Replace CCM. See CRUISE CONTROL MODULE  under REMOVAL & INSTALLATION. After repairs, go to next step.
  46. Reconnect all harness connectors. Operate vehicle within normal cruise control operating conditions. If cruise control operates correctly, system is okay at this time. If cruise control does not operate correctly, go to step  2 .
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