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Cruise Control Is Inoperative

NOTE: To avoid misdiagnosis, perform Rev Test and Trouble Shooting. See REV TEST  and TROUBLE SHOOTING. Check for stored DTCs. See appropriate TESTS W/CODES article in ENGINE PERFORMANCE section:
  1. Disconnect cruise control module assembly connector. Turn ignition switch to RUN position. Using a DVOM, measure voltage between cruise control module assembly connector (harness side) terminal "F" (Pink wire) and ground. See WIRING DIAGRAMS  . If battery voltage is present, go to next step. If battery voltage is not present, go to step 3).
  2. Using a DVOM, measure voltage between cruise control module assembly connector (harness side) terminals "F" (Pink wire) and "E" (Black/White wire). See WIRING DIAGRAMS  . If battery voltage is present, go to step 4). If battery voltage is not present, go to step 5).
  3. Check CRUISE fuse (10-amp). Replace as necessary. If fuse is okay, repair poor connection or open in Pink wire between cruise control module assembly and fuse block.
  4. Turn cruise control switch to ON position. Using a DVOM, measure voltage between cruise control module assembly connector (harness side) terminal "A" (Gray wire) and ground. See WIRING DIAGRAMS  . If battery voltage is present, go to step 6). If battery voltage is not present, go to step 7).
  5. Repair poor connection or open in Black/White wire between cruise control module assembly and ground connection.
  6. Press and hold cruise control switch in SET position. Using a DVOM, measure voltage between cruise control module assembly connector (harness side) terminal "B" (Dark Blue wire) and ground. See WIRING DIAGRAMS  . If battery voltage is present, go to step 8). If battery voltage is not present, go to step 9).
  7. Using a DVOM, backprobe between multifunction lever (cruise control switch) connector (harness side) terminal "A" (Pink wire) and ground. See WIRING DIAGRAMS  . If battery voltage is present, go to step 10). If battery voltage is not present, go to step 11).
  8. Using a DVOM, backprobe between cruise control brake switch connector (harness side) terminal "A" (Pink wire) and ground. See WIRING DIAGRAMS  . If battery voltage is present, go to step 12). If battery voltage is not present, go to step 13).
  9. Press and hold cruise control switch in SET position. Using a DVOM, backprobe between multifunction lever (cruise control switch) connector (harness side) terminal "B" (Dark Blue wire) and ground. See WIRING DIAGRAMS  . If battery voltage is present, go to step 14). If battery voltage is not present, go to step 16).
  10. Using a DVOM, backprobe between multifunction lever (cruise control switch) connector (harness side) terminal "D" (Gray wire) and ground. See WIRING DIAGRAMS  . If battery voltage is present, go to step 15). If battery voltage is not present, go to step 16).
  11. Repair poor connection or open in Pink wire between multifunction lever (cruise control switch) and fuse block.
  12. Using a DVOM, backprobe between cruise control brake switch connector (harness side) terminal "B" (Brown wire on M/T; Purple wire on A/T) and ground. See WIRING DIAGRAMS  . If battery voltage is present, go to step 17). If battery voltage is not present, go to step 18).
  13. Check ERLS fuse (10-amp). Replace as necessary. If fuse is okay, repair poor connection or open in Pink wire between cruise control brake switch and fuse block.
  14. Repair poor connection or open in Dark Blue wire between multifunction lever (cruise control switch) and cruise control module assembly.
  15. Repair poor connection or open in Gray wire between multifunction lever (cruise control switch) and cruise control module assembly.
  16. Replace multifunction lever (cruise control switch). See STEERING COLUMN SWITCHES article.
  17. On A/T models, go to step 22). On M/T models, go to step 19).
  18. Check cruise control brake switch for proper adjustment. See CRUISE CONTROL RELEASE SWITCH & BRAKE SWITCH ADJUSTMENT  . If cruise control brake switch is properly adjusted, replace cruise control brake switch. See CRUISE CONTROL RELEASE SWITCH & BRAKE SWITCH  .
  19. Using a DVOM, backprobe between cruise control clutch switch connector (harness side) terminal "A" (Brown wire) and ground. See WIRING DIAGRAMS  . If battery voltage is present, go to next step. If battery voltage is not present, go to step 21).
  20. Using a DVOM, backprobe between cruise control clutch switch connector (harness side) terminal "B" (Brown/White wire) and ground. See WIRING DIAGRAMS  . If battery voltage is present, go to step 22). If battery voltage is not present, go to step 23).
  21. Repair poor connection or open in Brown wire between cruise control clutch switch and cruise control brake switch.
  22. Using a DVOM, measure voltage between cruise control module assembly connector (harness side) terminal "D" (Brown/White wire on M/T; Purple wire on A/T) and ground. See WIRING DIAGRAMS  . If battery voltage is present, go to step 24). If battery voltage is not present, go to step 25).
  23. Check cruise control clutch switch for proper adjustment. See CRUISE CONTROL CLUTCH SWITCH ADJUSTMENT (M/T)  . If cruise control clutch switch is properly adjusted, replace cruise control clutch switch. See CRUISE CONTROL CLUTCH SWITCH (M/T)  .
  24. Connect scan tool to Data Link Connector (DLC). Start engine. Clear any existing Diagnostic Trouble Codes (DTCs). Using scan tool, command PCM to allow cruise. Using a DVOM, measure voltage between cruise control module assembly connector (harness side) terminal "H" (Dark Green wire) and battery voltage. See WIRING DIAGRAMS  . If battery voltage is present, go to step 26). If battery voltage is not present, diagnose inhibit cruise output circuit. See procedures in appropriate TESTS W/CODES article in ENGINE PERFORMANCE section:
  25. On A/T, repair poor connection or open in Purple wire between cruise control module assembly and cruise control brake switch. On M/T, repair poor connection or open in Brown/White wire between cruise control clutch switch and cruise control module assembly.
  26. Raise and support vehicle. Turn ignition switch to RUN position. Place transmission in Neutral and slowly rotate front wheels. Using a DVOM, measure voltage between cruise control module assembly connector (harness side) terminal "K" (Dark Green/White wire) and ground. See WIRING DIAGRAMS  . If voltage varies, go to next step. If voltage does not vary, diagnose vehicle speed output circuit. See procedures in appropriate TESTS W/CODES article in ENGINE PERFORMANCE section:
  27. Replace cruise control module assembly. See procedures in CRUISE CONTROL MODULE ASSEMBLY  under REMOVAL & INSTALLATION.
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