Mike's Workshop Manuals: Service manuals for every vehicle
Home >> Lincoln >> 2000 >> Navigator 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 145 (Power Door Locks & Remote Keyless Entry Systems) >> System Tests >> Test G: AUTOLOCK Does Not Operate Correctly

Test G: AUTOLOCK Does Not Operate Correctly

WARNING: This page is about a different car, the 2002 Lincoln Navigator and 2002 Ford Expedition. However, it is still accessible from the selected car via links, so may be relevant.
  1. Perform auto-lock/relock ENABLE/DISABLE procedure. See AUTOLOCK & HORN CHIRP  under PROGRAMMING. If auto-lock/relock is not disabled, go to next step. If auto-lock/relock is disabled, enable auto-lock/relock system then go to next step.
  2. Turn ignition switch to LOCK position. Connect New Generation Star (NGS) tester to Data Link Connector (DLC). DLC is located below left side of instrument panel, right of steering column. Turn ignition switch to RUN position. Perform Central Security Module (CSM) self-test. If DTC B1485 is retrieved, go to next step. If DTC B1629 is retrieved, go to step  8. If no Diagnostic Trouble Codes (DTCs) are retrieved, go to step  11.
  3. Monitor CSM PID BOO. If PID BOO indicates OFF, go to next step. If PID BOO indicates ON, go to step  5.
  4. Monitor CSM PID BOO while pressing and releasing brake pedal. If CSM PID BOO always indicates ON, go to next step. If CSM PID BOO always indicates OFF, go to step  6. If CSM PID BOO indicates ON when brake pedal is pressed and OFF when brake pedal released, go to step  8.
  5. Turn ignition switch to LOCK position. Disconnect negative battery cable. Disconnect CSM harness connector C256. CSM is located behind left side of instrument panel. Connect negative battery cable. Measure voltage between ground and CSM harness connector C256 terminal No. 26 (Red/Light Green wire). See Figure. If voltage does not exist, go to step  8. If any voltage exists, repair short to voltage in Red/Light Green wire between CSM and brake pedal position switch. See WIRING DIAGRAMS .
  6. Press brake pedal and observe brakelights. If brakelights illuminate, go to next step. If brakelights do not illuminate, diagnose and repair brakelight system. See EXTERIOR LIGHTS in SYSTEM WIRING DIAGRAMS article in ELECTRICAL.
  7. Disconnect negative battery cable. Disconnect CSM harness connector C256. CSM is located behind left side of instrument panel. Reconnect battery negative battery cable. Measure voltage between ground and CSM harness connector C256 terminal No. 26 (Red/Light Green wire) while pressing brake pedal. See Figure. If battery voltage exists, go to step  18. If battery voltage does not exist, repair open in Red/Light Green wire between CSM and brake pedal position switch. See WIRING DIAGRAMS .
  8. Monitor CSM PID TRANSGR with NGS tester. If NGS tester does not indicate transmission is in Reverse, go to next step. If NGS tester indicates transmission is in Reverse, go to step  10.
  9. Observe CSM PID TRANSGR with NGS tester, while shifting vehicle from Park to Reverse and back to Park. If CSM PID TRANSGR does not indicate not REV when in Park and REV when in Reverse, go to next step. If CSM PID TRANSGR indicates not REV when in Park and REV when in Reverse, go to step  18.
  10. Turn ignition switch to LOCK position. Disconnect negative battery cable. Disconnect CSM harness connector C256. CSM is located behind left side of instrument panel. Connect negative battery cable. Measure voltage between ground and CSM harness connector C256 terminal No. 12 (Black/Pink wire). See Figure. If voltage does not exist, go to step  18. If voltage does exists, repair short to voltage in Black/Pink wire between CSM and reverse lighting system. See EXTERIOR LIGHTS in SYSTEM WIRING DIAGRAMS article in ELECTRICAL.
  11. Disconnect negative battery cable. Connect CSM harness connector C256. Connect negative battery cable. Ensure all doors are closed. Monitor CSM PID DOOR while opening and closing driver's side door. If CSM PID DOOR indicates AJAR when door is closed, go to next step. If CSM PID DOOR indicates CLOSED when door is open, go to step  14. If CSM PID DOOR indicates CLOSED when door is closed and AJAR when door is open, go to step  15.
  12. Using NGS tester, perform Generic Electronic Module (GEM) self-test. If no DTCs are retrieved from GEM, go to next step. If DTC B1322, B1330, B1334, B1338 or B1574 is retrieved from GEM, diagnose and repair door ajar system. See AUTOLAMP SYSTEMS article.
  13. Turn ignition switch to LOCK position. Disconnect negative battery cable. Disconnect CSM harness connector C256. Disconnect GEM harness connector C240. Measure resistance between ground and CSM harness connector C256 terminal No. 11 (Light Blue/White wire). See Figure. If resistance is more than 10 k/ohms, go to step  18. If resistance is 10 k/ohms or less, repair short to ground in Light Blue/White wire between CSM, GEM and air suspension control module. See WIRING DIAGRAMS .
  14. While driver's door is open, measure resistance between ground and CSM harness connector C256 terminal No. 11 (Light Blue/White wire). See Figure. If resistance is 10 k/ohms or less, go to step  18. If resistance is more than 10 k/ohms, repair open in Light Blue/White wire between CSM, GEM and air suspension control module. See WIRING DIAGRAMS .
  15. Monitor CSM PID IGN while turning ignition switch from LOCK position to RUN position. If CSM PID IGN indicates ON when ignition switch is in LOCK position, go to next step. If CSM PID IGN indicates OFF when ignition switch is in LOCK position and RUN/ACC when ignition switch is in RUN position, go to step  18. If CSM PID IGN indicates OFF when ignition switch is in RUN position, go to step  17.
  16. Ensure ignition switch is in LOCK position. Disconnect negative battery cable. Disconnect CSM harness connector C256. Connect negative battery cable. Measure voltage between ground and CSM harness connector C256 terminal No. 25 (Red/Yellow wire). See Figure. If any voltage exists, repair short to voltage in Red/Yellow wire between CSM and central junction box. If voltage does not exist, go to step  18.
  17. Ensure ignition switch is in LOCK position. Disconnect negative battery cable. Disconnect CSM harness connector C256. Connect negative battery cable. Turn ignition switch to RUN position. Measure voltage between ground and CSM harness connector C256 terminal No. 25 (Red/Yellow wire). See Figure. If battery voltage exists, go to next step. If battery voltage does not exist, repair open in Red/Yellow wire between CSM and central junction box. See WIRING DIAGRAMS .
  18. Disconnect all CSM harness connectors. Inspect harness connectors for corrosion and pushed out pins. Connect all CSM harness connectors, ensuring they are connected correctly. Operate system and verify if problem is still exists. If problem is still exists, replace CSM. See CENTRAL SECURITY MODULE  under REMOVAL & INSTALLATION. If problem does not exist, system is operating correctly at this time. Clear DTCs and perform CSM self-test.
scientia non olet · About Mike's Workshop Manuals