LEMON Manuals: Even more car manuals for everyone
Home >> Chevrolet >> 2000 >> Venture Plus >> Repair and Diagnosis >> Accessories & Equipment >> Cruise Control Systems >> System Tests >> Cruise Control Inoperative/Malfunctioning (Using Tester J42958)

Cruise Control Inoperative/Malfunctioning (Using Tester J42958)

NOTE: The following test is specially designed for Cruise Control Tester (J42958) and GM Tech I or Tech II scan tool. Generic test equipment may not be capable of performing all necessary test functions.
  1. Following manufacturer's instructions, install scan tool. Check for any Diagnostic Trouble Codes (DTCs) that exist which could effect operation of cruise control. If no DTCs exist, go to next step. If any DTCs exist, go to appropriate SELF-DIAGNOSTICS article in ENGINE PERFORMANCE.
  2. Connect Cruise Control Tester (J42958) between cruise control module and cruise control module harness connector. Turn ignition switch to ON position. If IGNITION LED illuminates, go to next step. If IGNITION LED does not illuminate, go to step  20 .
  3. If BRAKE/TCC LED on cruise control tester illuminates, go to next step. If BRAKE/TCC LED does not illuminate, go to step  22 .
  4. If BRAKE LIGHTS LED on cruise control tester illuminates, go to next step. If BRAKE LIGHTS LED does not illuminate, go to step  23 .
  5. Press and release brake pedal. If BRAKE LIGHTS LED turns off when brake pedal was pressed, go to next step. If BRAKE LIGHTS LED light does not operate as described, go to step  25 .
  6. Turn cruise control functional switches to ON position. If ON/OFF and INHIBIT/ENABLE LEDs on cruise control tester illuminate, go to next step. If ON/OFF and INHIBIT/ENABLE LEDs do not illuminate as described, go to step  27 .
  7. If CRUISE LAMP LED on cruise control tester illuminates, go to next step. If CRUISE LAMP LED does not illuminate, go to step  28 .
  8. Press and release SET/COAST switch. If SET/COAST LED on cruise control tester illuminates when switch is pressed and goes off when switch was released, go to next step. If SET/COAST LED does not operate as described, go to step  30 .
  9. Press and release RESUME/ACCEL switch. If RESUME/ACCEL LED on cruise control tester illuminates when switch is pressed and goes off when switch was released, go to next step. If RESUME/ACCEL LED does not operate as described, go to step  31 .
  10. Perform the following operations in the listed sequence:
    • Press INHIBIT OVERRIDE button on cruise control tester.
    • Press and release BRAKE button on cruise control tester.
    • Press and release SET/COAST button on cruise control tester.
    If CRUISE ENGAGE LED on cruise control tester illuminates continuously after SET/COAST button was pressed and released, go to next step. If CRUISE ENGAGE LED does not illuminate as described, go to step  20 .
  11. While observing throttle lever at throttle body, press RESUME/ACCEL button on cruise control tester for 5 seconds then release. If throttle lever moves toward full throttle then closes to about one-half throttle, go to next step. If throttle lever did not operate as described, go to step  35 .
  12. While observing throttle lever at throttle body, press SET/COAST button on cruise control tester for 5 seconds then release. If throttle lever moves toward closed throttle then returns to about one-half throttle, go to next step. If throttle lever did not operate as described, go to step  35 .
  13. Press and release (tap) RESUME/ACCEL button on cruise control tester 3 times. Press and release BRAKE button on cruise control tester. If CRUISE ENGAGE LED turns off and throttle lever return to closed position, go to next step. If CRUISE ENGAGE LED and throttle lever do not operate as described, go to step  35 .
  14. Raise and support vehicle so drive wheels may be rotated. Block one drive wheel. Set gear selector in DRIVE position. If VSS LED on cruise control tester flashes while rotating unblocked drive wheel, go to next step. If VSS LED does not flash, go to appropriate SELF-DIAGNOSTICS article in ENGINE PERFORMANCE.
  15. Check cruise control module harness connector. If Dark Green wire is attached to terminal "H", go to next step. If there is no wire attached to terminal "H", go to step  19 .
  16. Following manufacturer's instructions, install scan tool. Turn ignition switch to ON position. Select POWERTRAIN SPECIAL FUNCTIONS and the OUTPUT CONTROLS for CRUISE CONTROL INHIBIT. Observe cruise control tester INHIBIT ENABLE LED. Using scan tool, enable cruise control. If INHIBIT ENABLE LED dims during enable command, go to next step. If INHIBIT ENABLE LED does not dim, go to step  32 .
  17. Disconnect cruise control tester and reconnect wiring harness to cruise control module. Road test vehicle at speeds greater than 25 MPH. Using scan tool, monitor cruise inhibit status. If scan tool displays ENABLED, go to next step. If scan tool does not display ENABLED, see appropriate SELF-DIAGNOSTICS article in ENGINE PERFORMANCE.
  18. If cruise control system operates normally, problem is intermittent. See PRELIMINARY INSPECTION  under TROUBLE SHOOTING. If cruise control system does not operate normally, go to step  35 .
  19. Reconnect all components. Road test vehicle and operate cruise control system. If cruise control system operates normally, problem is intermittent. See PRELIMINARY INSPECTION  under TROUBLE SHOOTING. If cruise control system does not operate normally, go to step  35 .
  20. Check Brown wire between cruise control module harness connector terminal "F" and CRUISE fuse (10-amp) in instrument panel fuse block for open, high resistance or short to ground. Repair Brown wire as necessary. After repair, check system for normal operation. If wire is okay, go to next step.
  21. Repair open or high resistance in Black wire between chassis ground and cruise control module harness connector terminal "E". After repair, check system for normal operation. If problem still exists, go to step  35 .
  22. Check cruise control release switch for proper adjustment. See CRUISE CONTROL RELEASE & BRAKELIGHT SWITCHES  under ADJUSTMENTS. Adjust switch if necessary. After adjustment, check system for normal operation. If adjustment is okay, go to step  24 .
  23. Check brakelight switch for proper adjustment. See CRUISE CONTROL RELEASE & BRAKELIGHT SWITCHES  under ADJUSTMENTS. If adjustment is okay, go to step  26 .
  24. Repair open or short to ground in Brown wire between cruise control module harness connector terminal "D" and cruise control release switch harness connector terminal "A". See WIRING DIAGRAMS  . After repair, check system for normal operation. If problem still exists, go to step  33 .
  25. Repair short to voltage in Brown wire between cruise control module harness connector terminal "D" and cruise control release switch harness connector terminal "A". After repair, check system for normal operation. If problem still exists, go to step  33 .
  26. Repair open or high resistance in White wire between brakelight switch harness connector terminal "B" and cruise control module harness connector terminal "G". After repair, check system for normal operation. If problem still exists, go to step  34 .
  27. Repair open or short to ground in Gray wire between cruise control functional switches harness connector terminal A12 and cruise control module harness connector terminal "A". After repair, check system for normal operation. If problem still exists, go to step  36 .
  28. Disconnect cruise control tester from cruise control module, but leave it connected to wiring harness. If CRUISE LAMP LED remains off after disconnection, go to next step. If CRUISE LAMP LED illuminates after disconnection, go to step  35 .
  29. Check White wire between cruise control module harness connector terminal "J" and PCM harness connector C2 terminal No. 59. Repair White wire as necessary. After repair, check system for normal operation. If wire is okay, go to step  37 .
  30. Check Dark Blue wire between cruise control module harness connector terminal "B" and cruise control functional switches harness connector terminal A14 for open or short to ground. Repair Dark Blue wire as necessary. After repair, check system for normal operation. If wire is okay, go to step  36 .
  31. Check Gray/Black wire between cruise control module harness connector terminal "C" and cruise control functional switches harness connector terminal A15 for short to voltage. Repair Gray/Black wire as necessary. After repair, check system for normal operation. If wire is okay, go to step  36 .
  32. Check Dark Green wire between PCM harness connector C1 terminal No. 72 and cruise control module harness connector terminal "H" for open or high resistance. Repair Dark Green wire as necessary. After repair, check system for normal operation. If wire is okay, go to step  37 .
  33. Replace cruise control release switch. See CRUISE CONTROL RELEASE & BRAKELIGHT SWITCHES  under REMOVAL & INSTALLATION. After repair, check system for normal operation.
  34. Replace brakelight switch. See CRUISE CONTROL RELEASE & BRAKELIGHT SWITCHES  under REMOVAL & INSTALLATION. After repair, check system for normal operation.
  35. Replace cruise control module. See CRUISE CONTROL MODULE  under REMOVAL & INSTALLATION. After repair, check system for normal operation.
  36. Replace cruise control functional switches. See CRUISE CONTROL FUNCTIONAL SWITCHES  under REMOVAL & INSTALLATION. After repair, check system for normal operation.
  37. Replace and program PCM. See appropriate SELF-DIAGNOSTICS article in ENGINE PERFORMANCE. After repair, check system for normal operation. If system still malfunctions, go to step  2 .
scientia non olet · About LEMON Manuals