LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Ford >> 1997 >> Crown Victoria Base, 4.6 9 >> Repair and Diagnosis >> Body & Frame >> Door Locks >> Remote Keyless Entry System >> Symptom Tests >> AUTOLOCK Function Does Not Work Properly
April 5, 2026: LEMON Manuals is launched! Read the announcement.

AUTOLOCK Function Does Not Work Properly

  1. Turn autolock function on. Close all doors. Sit in driver's seat. Turn ignition on. If doors do not lock, go to next step. If doors lock, repair White/Pink wire between DDM connector C518/C521, terminal No. 10 (White/Pink wire) and transmission range sensor, then retest system.
  2. Close all doors. Sit in driver's seat. Set transmission lever to Reverse or Drive. If doors do not lock, turn autolock function off and on several times. If doors still do not lock, go to next step. If doors lock, go to step 8).
  3. Close all doors. Turn all lights off. Wait one minute. If courtesy lights go out, go to next step. If courtesy lights remain on, repair appropriate lighting circuitry.
  4. Connect and operate NGS tester following manufacturer's instructions. With all doors closed, read DDM PID D_DR_DD. If display is DOOR AJAR, go to next step. If display is not DOOR AJAR, go to step 6).
  5. Disconnect Lighting Control Module (LCM) 12-pin connector located behind center of instrument panel. With all doors closed, read PID D_DR_DD. If display is DOOR AJAR, repair short to ground in Black/Yellow wire between DDM connector C518/C521, terminal No. 9 and air suspension module, lighting control module, and instrument cluster, then retest system. If display is not DOOR AJAR, temporarily substitute known good LCM, then retest system.
  6. With driver's seat occupied, read PID D_SEAT. If display is OCCUPD, go to next step. If display is not OCCUPD, test White wire for continuity between driver's seat switch and DDM connector C518/C521, terminal No. 8. If wire is okay, replace driver's seat switch, then retest system.
  7. Set transmission selector lever to Park or Neutral. Read PID PK/N_SW. If display is PK/NTR, check for stuck transmission range sensor. Repair as necessary, then retest system. If display is not PK/NTR, temporarily substitute known good DDM, then retest system
  8. Sit in driver's seat. Open and close all door. If any door does not lock after it is closed, go to next step. If each door locks after it is closed, go to step 11).
  9. Open door(s) which did not trigger autolock function. Observe courtesy lights. If courtesy lights do not operate when door is opened, go to next step. If courtesy lights operate when door is opened, temporarily substitute known good LCM, then retest system.
  10. Connect and operate NGS tester following manufacturer's instructions. With driver's door open, read PID D_DR_DD. If display is AJAR, go to next step. If display is not AJAR, repair open Black/Yellow wire between DDM connector C518/C521, terminal No. 9 and air suspension module, lighting control module, and instrument cluster, then retest system.
  11. Remove any weight from driver's seat. Open and close any door. If doors do not lock, system is okay. If doors lock, inspect White wire for short to ground between driver's seat switch and DDM connector C518/C521, terminal No. 8. If wire is okay, replace driver's seat switch, then retest system.
scientia non olet · About LEMON Manuals