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Cruise Control Is Inoperative

NOTE: To avoid misdiagnosis, perform System Test and Trouble Shooting. See SYSTEM TEST and TROUBLE SHOOTING. Check for stored DTCs. See TESTS W/CODES article in ENGINE PERFORMANCE section.
  1. Disconnect Powertrain Control Module (PCM) 24-pin connector C2 (Brown). Turn ignition switch to RUN position. Connect a test light between PCM connector C2 (harness side) terminal A11 (Gray wire) and ground. See WIRING DIAGRAMS  . Turn cruise control switch to ON position. If test light does not illuminate, go to next step. If test light illuminates, go to step 4).
  2. Disconnect multifunction lever (cruise control switch) connector. Connect a test light between multifunction lever (cruise control switch) connector (harness side) terminal A13 (Brown wire) and ground. See WIRING DIAGRAMS  . If test light illuminates, go to next step. If test light does not illuminate, repair open in Brown wire between instrument panel fuse block and multifunction lever (cruise control switch).
  3. Connect a test light between multifunction lever (cruise control switch) connector (pigtail side) terminals A13 (Brown wire) and A12 (Gray wire). See WIRING DIAGRAMS  . If test light illuminates, repair open in Gray wire between multifunction lever (cruise control switch) and PCM. If test light does not illuminate, repair open in Brown wire or Gray wire of multifunction lever (cruise control switch) pigtail. If Brown wire and Gray wire are okay, replace multifunction lever (cruise control switch). See STEERING COLUMN SWITCHES article.
  4. Connect a test light between PCM connector C2 (harness side) terminal B11 (Dark Blue wire) and ground. See WIRING DIAGRAMS  . Press and hold cruise control switch in SET position. If test light does not illuminate, go to next step. If test light illuminates, go to step 6).
  5. Disconnect multifunction lever (cruise control switch) connector. Connect a test light between multifunction lever (cruise control switch) connector (pigtail side) terminals A13 (Brown wire) and A14 (Dark Blue wire). See WIRING DIAGRAMS  . If test light illuminates, repair open in Dark Blue wire between multifunction lever (cruise control switch) and PCM. If test light does not illuminate, repair open in Dark Blue wire of multifunction lever (cruise control switch) pigtail. If Dark Blue wire is okay, replace multifunction lever (cruise control switch). See STEERING COLUMN SWITCHES article.
  6. Connect a test light between PCM connector C2 (harness side) terminal B10 (White wire) and ground. See WIRING DIAGRAMS  . If test light illuminates, go to next step. If test light does not illuminate, go to step 8).
  7. Disconnect TCC/brake switch connector. Connect a test light between TCC/brake switch terminals "E" (Orange wire) and "F" (White wire). See WIRING DIAGRAMS  . If test light illuminates, replace TCC/brake switch. See BRAKE & CLUTCH RELEASE SWITCHES  . If test light does not illuminate, repair short to voltage in White wire between TCC/brake switch and PCM.
  8. Apply brake pedal. If test light does not illuminate, go to next step. If test light illuminates, go to step 11).
  9. Disconnect TCC/brake switch connector. Connect a test light between TCC/brake switch connector (harness side) terminal "E" (Orange wire) and ground. See WIRING DIAGRAMS  . If test light illuminates, go to next step. If test light does not illuminate, repair open in Orange wire between instrument panel fuse block and TCC/brake switch.
  10. Connect a test light between TCC/brake switch terminals "E" (Orange wire) and "F" (White wire). See WIRING DIAGRAMS  . Apply brake pedal. If test light does not illuminate, replace TCC/brake switch. See BRAKE & CLUTCH RELEASE SWITCHES  . If test light illuminates, repair open in White wire between TCC/brake switch and PCM.
  11. Connect a test light between PCM connector C2 (harness side) terminal B9 (Purple wire) and ground. See WIRING DIAGRAMS  . If test light does not illuminate, go to next step. If test light illuminates, replace PCM.
  12. Disconnect TCC/brake switch connector. Connect a test light between TCC/brake switch connector (harness side) terminal "D" (Brown wire) and ground. See WIRING DIAGRAMS  . If test light illuminates, go to next step. If test light does not illuminate, repair open in Brown wire between instrument panel fuse block and TCC/brake switch.
  13. Connect a test light between TCC/brake switch terminals "D" (Brown wire) and "C" (Purple wire). See WIRING DIAGRAMS  . Apply brake pedal. If test light remains illuminated, replace TCC/brake switch. See BRAKE & CLUTCH RELEASE SWITCHES. If test light goes out, repair open in Purple wire between TCC/brake switch and PCM.
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