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Test V: Key-In-Ignition Warning Chime Does Not Operate Properly

  1. Turn ignition switch to LOCK position. Connect New Generation Star (NGS) tester to Data Link Connector (DLC). DLC is located below driver's side of instrument panel, right of steering column. Turn ignition switch to RUN position. Monitor Generic Electronic Module (GEM) PIDs IGN_KEY, IGN_A, IGN_S and IGN_R while cycling ignition switch through all positions. If PIDs agree with ignition switch positions, go to next step. If PIDs do not agree with ignition switch positions, go to step  4 .
  2. Using NGS tester, select GEM active command CHIME. Trigger active command CHIME on and off. If chime operates properly, go to next step. If chime does not operate properly, go to step  11 .
  3. Using NGS tester, monitor GEM PID D_DR_SW while opening and closing driver's door. If PID agrees with door position, go to step  11 . If PID does not agree with door position, perform TEST X: DOOR AJAR WARNING CHIME DOES NOT OPERATE PROPERLY  .
  4. Remove fuse No. 28 (15-amp) from Central Junction Box (CJB). CJB is located behind left side of instrument panel. Measure voltage between ground and input side of fuse No. 28 while cycling ignition switch through all positions. Battery voltage should only exist when ignition switch is in RUN and START positions. If voltage is as specified, go to next step. If voltage is not as specified, repair power distribution circuit to fuse No. 28. See POWER DISTRIBUTION article in WIRING DIAGRAMS.
  5. Remove fuse No. 32 (15-amp) from CJB. Measure voltage between ground and input side of fuse No. 32 while cycling ignition switch through all positions. Battery voltage should only exist when ignition switch is in ACC and RUN positions. If voltage is as specified, go to next step. If voltage is not as specified, repair power distribution circuit to fuse No. 32. See POWER DISTRIBUTION article in WIRING DIAGRAMS.
  6. Turn ignition switch to LOCK position. Ensure fuse No. 28 is still removed. Disconnect 26-pin Generic Electronic Module (GEM) harness connector C352. GEM is located behind left side of instrument panel, next to CJB. See Fig 1 . Ensure key is inserted into ignition switch. Measure resistance in White/Light Green wire between output side of fuse No. 28 and GEM harness connector C352 terminal No. 8. See Figure . If resistance is 5 ohms or less, go to next step. If resistance is more than 5 ohms, repair open in White/Light Green wire between GEM and fuse No. 28. See POWER DISTRIBUTION article in WIRING DIAGRAMS.
  7. Ensure fuse No. 32 is still removed. Measure resistance in Black/Pink wire between output side of fuse No. 32 and GEM harness connector C352 terminal No. 22. If resistance is 5 ohms or less, go to next step. If resistance is more than 5 ohms, repair open in Black/Pink wire between GEM and fuse No. 32. See POWER DISTRIBUTION article in WIRING DIAGRAMS.
  8. Measure resistance between ground and GEM harness connector C352 terminal No. 9 (Black/Pink wire). If resistance is 5 ohms or less, go to next step. If resistance is more than 5 ohms, repair open in Black/Pink wire between GEM and ignition key warning switch. See WIRING DIAGRAMS in MODULE COMMUNICATIONS NETWORK - MUSTANG article.
  9. Remove ignition key. Ensure fuses No. 28 and 32 are still removed and GEM harness connector C352 is disconnected. Measure voltage between ground and GEM harness connector C352 terminals No. 8 (White/Light Green) and No. 22 (Black/Pink wire). If voltage does not exist at either terminal, go to next step. If voltage exists at either terminal, repair short to voltage in appropriate wire. See WIRING DIAGRAMS in MODULE COMMUNICATIONS NETWORK - MUSTANG article.
  10. Measure resistance between ground and GEM harness connector C352 terminal No. 9 (Black/Pink wire). If resistance is more than 10 k/ohms, go to next step. If resistance is 10 k/ohms or less, repair short to ground in Black/Pink wire between GEM and ignition key warning switch. See WIRING DIAGRAMS in MODULE COMMUNICATIONS NETWORK - MUSTANG article.
  11. Disconnect all GEM harness connectors. Inspect all GEM harness connectors for loose, damaged or corroded terminals. If terminals are damaged, repair as necessary. If terminals are not damaged, reconnect all GEM harness connectors. Ensure GEM harness connectors are seated properly. If problem still exists, replace GEM. See REMOVAL & INSTALLATION  .
Fig 1: Locating Harness Connectors Behind Instrument Panel
G00033942Courtesy of FORD MOTOR CO.
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