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Home >> Chevrolet >> 1999 >> Venture Base, Van Cargo Extended >> Repair and Diagnosis >> Accessories & Equipment >> Cruise Control Systems >> System Tests >> Cruise Control Is Inoperative
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Cruise Control Is Inoperative

NOTE: To avoid misdiagnosis, ensure preliminary inspection and all checks have been performed. See TROUBLE SHOOTING  . Check for stored DTCs. See SELF-DIAGNOSTICS - GASOLINE - EXCEPT METRO, PRIZM & TRACKER article in ENGINE PERFORMANCE.
  1. Check STOP LAMPS fuse (15-amp) located in fuse block, in right front door opening. If fuse is blown, go to next step. If fuse is okay, go to step  3 .
  2. Check for short to ground in Orange wire between fuse block and brake switch. See WIRING DIAGRAMS  . Repair as necessary and replace STOP LAMPS fuse. If Orange wire is okay, replace STOP LAMPS fuse and go to next step.
  3. Check CRUISE fuse (10-amp) located in fuse block, in right front door opening. If fuse is blown, go to next step. If fuse is okay, go to step  5 .
  4. Check for short to ground in Pink wire between fuse block and cruise control module. See WIRING DIAGRAMS  . Repair as necessary and replace CRUISE fuse (10-amp). If Pink wire is okay, replace CRUISE fuse and go to next step.
  5. Turn cruise control switch to OFF position. Disconnect cruise control module connector. Turn ignition switch to RUN position. Using a test light connected to ground, probe cruise control module connector (harness side) terminal "F" (Pink wire). If test light illuminates, go to next step. If test light does not illuminate, go to step  20 .
  6. Using a test light, probe between cruise control module connector (harness side) terminals "F" (Pink wire) and "E" (Black wire). If test light illuminates, go to next step. If test light does not illuminate, go to step  21 .
  7. Turn cruise control switch to ON position. Using a test light, probe between cruise control module connector (harness side) terminals "A" (Gray wire) and "E" (Black wire). If test light illuminates, go to next step. If test light does not illuminate, go to step  22 .
  8. Press and hold cruise control switch in SET position. Using a test light, probe between cruise control module connector (harness side) terminals "B" (Dark Blue wire) and "E" (Black wire). If test light illuminates, go to next step. If test light does not illuminate, go to step  30 .
  9. Press and hold cruise control switch in SET position. Using a test light, probe between cruise control module connector (harness side) terminals "C" (Gray/Black wire) and "E" (Black wire). If test light illuminates, go to step  34 . If test light does not illuminate, go to next step.
  10. Using a test light, probe between cruise control module connector (harness side) terminals "D" (Brown wire) and "E" (Black wire). If test light illuminates, go to next step. If test light does not illuminate, go to step  36 .
  11. Using a test light, probe between cruise control module connector (harness side) terminals "B" (Dark Blue wire) and "E" (Black wire). If test light illuminates, go to step  43 . If test light does not illuminate, go to next step.
  12. Using a test light, probe between cruise control module connector (harness side) terminals "C" (Gray/Black wire) and "E" (Black wire). If test light illuminates, go to step  45 . If test light does not illuminate, go to next step.
  13. Set parking brake. Raise drive wheels. Using a DVOM, measure voltage between cruise control module connector (harness side) terminal "K" (Dark Green wire) and ground while rotating drive wheels. If voltage is 0-5 volts, go to next step. If voltage is not 0-5 volts, go to step  47 .
  14. Turn ignition switch to OFF position. Check for a poor connection or open in Dark Green wire (cruise disable output circuit) between cruise control module and Powertrain Control Module (PCM). Reinstall cruise control module. Connect scan tool to Data Link Connector (DLC). Start engine. Clear any existing Diagnostic Trouble Codes (DTCs). Using scan tool, monitor SMCC INHIBITED display. Attempt to operate vehicle in cruise control. If SMCC INHIBITED is displayed on scan tool, go to step  49 . If SMCC INHIBITED is not displayed on scan tool, go to next step.
  15. Turn ignition switch to OFF position, and then to RUN position. Clear any existing DTCs. Using scan tool, select MODE 4 diagnostics. Using scan tool, command SMCC to ALLOW cruise. Using a test light, probe between cruise control module connector (harness side) terminal "H" (Dark Green wire) and battery voltage. If test light illuminates, go to next step. If test light does not illuminate, go to step  17 .
  16. Replace cruise control module. See CRUISE CONTROL MODULE  under REMOVAL & INSTALLATION.
  17. Check for a short to voltage in Dark Green wire between cruise control module and PCM. See WIRING DIAGRAMS  . If Dark Green wire is faulty, go to next step. If Dark Green wire is okay, go to step  19 .
  18. Repair short to voltage in Dark Green wire between cruise control module and Powertrain Control Module (PCM).
  19. Diagnose PCM . See SELF-DIAGNOSTICS - GASOLINE - EXCEPT METRO, PRIZM & TRACKER article in ENGINE PERFORMANCE.
  20. Repair poor connection or open in Pink wire between fuse block and cruise control module.
  21. Repair poor connection or open in Black wire between cruise control module and ground connection. See WIRING DIAGRAMS  .
  22. Using a test light, probe between cruise control module connector (harness side) terminals "B" (Dark Blue wire) and "E" (Black wire). While observing test light, press and hold cruise control switch in SET position. If test light illuminates, go to step  28 . If test light does not illuminate, go to next step.
  23. Check for a short to ground in Gray wire between cruise control functional switches and cruise control module. See WIRING DIAGRAMS  . If Gray wire is faulty, go to next step. If Gray wire is okay, go to step  25 .
  24. Repair short to ground in Gray wire between cruise control functional switches and cruise control module.
  25. Check for a poor connection or open in Gray wire between cruise control functional switches and cruise control module. See WIRING DIAGRAMS  . If Gray wire is faulty, go to next step. If Gray wire is okay, go to step  27 .
  26. Repair poor connection or open in Gray wire between cruise control functional switches and cruise control module.
  27. Replace cruise control functional switches. See CRUISE CONTROL FUNCTIONAL SWITCHES  under REMOVAL & INSTALLATION.
  28. Check for a poor connection or open in Pink wire between fuse block and cruise control module. See WIRING DIAGRAMS  . If Pink wire is faulty, go to next step. If Pink wire is okay, go to step  27 .
  29. Repair poor connection or open in Pink wire between fuse block and cruise control module.
  30. Check for a short to ground in Dark Blue wire between cruise control functional switches and cruise control module. See WIRING DIAGRAMS  . If Dark Blue wire is faulty, go to next step. If Dark Blue wire is okay, go to step  32 .
  31. Repair short to ground in Dark Blue wire between cruise control functional switches and cruise control module.
  32. Check for a poor connection or open in Dark Blue wire between cruise control functional switches and cruise control module. See WIRING DIAGRAMS  . If Dark Blue wire is faulty, go to next step. If Dark Blue wire is okay, go to step  27 .
  33. Repair poor connection or open in Dark Blue wire between cruise control functional switches and cruise control module.
  34. Check Gray/Black wire for a short to Dark Blue wire between cruise control functional switches and cruise control module. See WIRING DIAGRAMS  . If Gray/Black wire is faulty, go to next step. If Gray/Black wire is okay, go to step  27 .
  35. Repair short in Gray/Black wire to Dark Blue wire between cruise control functional switches and cruise control module.
  36. Using a test light connected to ground, backprobe between cruise control release switch connector (harness side) terminal "B" (Pink wire). If test light illuminates, go to step  38 . If test light does not illuminate, go to next step.
  37. Repair poor connection or open in Pink wire between fuse block and cruise control release switch.
  38. Check for a poor connection or open in Brown wire between cruise control release switch and cruise control module. See WIRING DIAGRAMS  . If Brown wire is faulty, go to next step. If Brown wire is okay, go to step  40 .
  39. Repair poor connection or open in Brown wire between cruise control release switch and cruise control module.
  40. Check cruise control release switch for proper adjustment. See CRUISE CONTROL RELEASE SWITCH & BRAKE SWITCH  under ADJUSTMENTS. If cruise control release switch is properly adjusted, go to next step. If cruise control release switch is not properly adjusted, go to step  42 .
  41. Replace cruise control release switch. See CRUISE CONTROL RELEASE SWITCH & BRAKE SWITCH  under REMOVAL & INSTALLATION.
  42. Adjust cruise control release switch. See CRUISE CONTROL RELEASE SWITCH & BRAKE SWITCH  under ADJUSTMENTS.
  43. Check for a short to voltage in Dark Blue wire between cruise control functional switches and cruise control module. See WIRING DIAGRAMS  . If Dark Blue wire is faulty, go to next step. If Dark Blue wire is okay, go to step  27 .
  44. Repair short to voltage in Dark Blue wire between cruise control functional switches and cruise control module.
  45. Check for a short to voltage in Gray/Black wire between cruise control functional switches and cruise control module. See WIRING DIAGRAMS  . If Gray/Black wire is faulty, go to next step. If Gray/Black wire is okay, go to step  27 .
  46. Repair short to voltage in Gray/Black wire between cruise control functional switches and cruise control module.
  47. Check for a poor connection or open in Dark Green wire (vehicle speed signal circuit) between cruise control module and Powertrain Control Module (PCM). See WIRING DIAGRAMS  . If Dark Green wire is faulty, go to next step. If Dark Green wire is okay, go to step  19 .
  48. Repair poor connection or open in Dark Green wire (vehicle speed signal circuit) between cruise control module and Powertrain Control Module (PCM).
  49. Using scan tool, monitor the following parameters:
    • Vehicle speed sensor should be 25-100 MPH.
    • Transaxle range should be 2nd, 3rd or 4th gear.
    • System voltage should be 9-17 volts.
    • Engine speed should be 500-5400 RPM. If listed parameters are within range, go to step  19 . If above parameters are not within range, go to next step.
  50. Perform POWERTRAIN ON-BOARD DIAGNOSTIC (OBD) SYSTEM CHECK under SELF-DIAGNOSTIC SYSTEM in SELF-DIAGNOSTICS - GASOLINE - EXCEPT METRO, PRIZM & TRACKER article in ENGINE PERFORMANCE.
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