Mike's Workshop Manuals: Service manuals for every vehicle
Home >> GMC >> 2001 >> Jimmy 4D Utility, 4WD >> Repair and Diagnosis >> Body & Frame >> Door Locks >> Power Door Lock System >> System Tests >> Test A: Power Door Locks Lock-Out Feature Inoperative

Test A: Power Door Locks Lock-Out Feature Inoperative

  1. If Diagnostic System Check has been performed, go to next step. If Diagnostic System Check has not been performed, perform DOOR SYSTEM DIAGNOSTIC SYSTEM CHECK  under SELF-DIAGNOSTIC SYSTEM.
  2. Roll driver window down. Insert key into ignition. Leave ignition switch in OFF position. Open all doors and liftgate (if equipped). Command doors to lock with a door lock switch. If all doors locked and then driver door unlocked, check for and correct intermittent problem. If door locks did not operate as specified, go to next step.
  3. Install scan tool. Using scan tool, observe key-in-ignition data parameter in BCM data list. Insert and remove ignition key from ignition switch. If scan tool indicates that key-in-ignition data parameter is within specified range, go to next step. If data parameter is not within specified range, go to step  5 .
  4. Using scan tool, observe driver door jamb switch data parameter in BCM data list. Open and close driver door. If scan tool indicates that driver door jamb switch data parameter is within specified range, go to step  6 . If data parameter is not within specified range, go to step  8 .
  5. Disconnect BCM. Using test light connected to battery positive voltage, test key-in-ignition switch signal circuit (Light Green wire) at BCM harness connector. Insert key into ignition. If test light illuminates, go to step  17 . If test light does not illuminate, go to step  11 .
  6. Disconnect BCM. Using test light connected to battery positive voltage, test secondary door latch switch signal circuit at BCM harness connector. Open and close doors one at a time. If test light illuminates and turns off with each door movement, go to next step. If test light does not illuminate and turn off with each door movement, go to step  10 .
  7. Disconnect BCM. Using test light connected to battery positive voltage, test terminal "B9" (Light Green wire) at BCM harness connector. Open and close liftgate/cargo door. If test light illuminates and turns off with cargo door/liftgate movement, go to step  17 . If test light does not illuminate and extinguish as described, go to step  12 .
  8. Disconnect BCM. Using test light connected to battery positive voltage, test left front door open switch signal circuit at BCM harness connector. Open and close driver door. If test light illuminates and turns off with movement of driver door, go to step  17 . If test light does not illuminate and extinguish as specified, go to next step.
  9. Test for an open in left front door open switch signal circuit. If problem was found and repaired, go to step  23 . If problem was not found, go to step  13 .
  10. Test for an open in secondary door latch switch signal circuit. If problem was found, repair as necessary and then go to step  23 . If problem was not found, go to step  14 .
  11. Test for an open in key-in-ignition switch signal circuit (Light Green wire). If problem was found, repair as necessary and then go to step  23 . If problem was not found, go to step  15 .
  12. Test for an open in cargo door/liftgate ajar switch signal circuit. If problem was found, repair as necessary and then go to step  23 . If problem was not found, go to step  16 .
  13. Inspect for poor connections at driver door jamb switch. If problem was found, repair as necessary and then go to step  23 . If problem was not found, go to step  18 .
  14. Inspect for poor connections at passenger door jamb switch. If problem is found, repair as necessary and then go to step  23 . If problem is not found, go to step  19 .
  15. Inspect for poor connections at key-in-ignition switch. If problem is found, repair as necessary and then go to step  23 . If problem is not found, go to step  20 .
  16. Inspect for poor connections at cargo door jamb/liftgate ajar switch. If problem is found, repair as necessary and then go to step  23 . If problem is not found, go to step  22 .
  17. Inspect for poor connections at BCM. If problem was found, repair as necessary and then go to step  23 . If problem was not found, go to step  21 .
  18. Replace driver door jamb switch. After completing repair, go to step  23 .
  19. Replace passenger door jamb switch. After completing repair, go to step  23 .
  20. Replace key-in-ignition switch. After completing repair, go to step  23 .
  21. Replace BCM. See BODY CONTROL MODULE  under REMOVAL & INSTALLATION.
  22. Replace cargo door/liftgate ajar switch. After completing repair, go to next step.
  23. Operate system in order to verify repair.
scientia non olet · About Mike's Workshop Manuals