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Pinpoint Test G - Alarm Falsely Triggers

NOTE: In all of the following tests, ignition key should always be in OFF position unless otherwise specified in a specific test.
  1. Disconnect 20-pin CPU connector. See CONNECTOR IDENTIFICATION. Open hood. Measure resistance between Brown/White wire at CPU connector and ground. Close hood. Measure resistance between Brown/White wire at CPU connector and ground. If resistance is less than 5 ohms with the hood closed, and greater than 10,000 ohms with hood open, go to step 4). If resistance is not as specified, go to next step.
  2. Disconnect hood latch switch connector. Open hood and measure between terminals of hood latch switch connector. Close hood and measure between terminals of hood latch switch connector. If resistance is less than 5 ohms with the hood closed, and greater than 10,000 ohms with hood open, go to next step. If resistance is not as specified, replace hood latch switch.
  3. Measure resistance between Black wire at hood latch switch connector and ground. If ohmmeter reads less than 5 ohms, repair Brown/White wire between hood latch switch and CPU. If ohmmeter reads greater than 5 ohms, repair Black wire between hood latch switch and ground.
  4. Disconnect 20-pin CPU connector. Place key in left door lock cylinder. Measure resistance between Yellow/Red wire at CPU connector and ground while turning key in lock. Repeat procedure for right door lock. If resistance is less than 5 ohms in unlock position, and greater than 10,000 ohms in neutral position, go to step 6). If resistances are not as specified, go to next step.
  5. Gain access to the connector of lock cylinder switch in question. Place key in lock cylinder. Measure resistance between Yellow/Red wire and Black wire at lock cylinder switch connector while turning key in lock. If resistance is less than 5 ohms in unlock position, and greater than 10,000 ohms in neutral position, repair Yellow/Red wire. If resistances are not as specified, replace lock cylinder switch.
  6. Disconnect 20-pin CPU connector. Unplug luggage compartment light switch and measure resistance of Light Blue wire between light switch connector and CPU connector. Measure resistance of Light Blue wire between light switch connector and Ground. If resistance of Light Blue wire is less than 5 ohms between light switch connector and CPU connector and greater than 10,000 ohms between light switch connector and ground, go to next step. If Light Blue wire is open or shorted to ground repair as necessary.
  7. Disconnect 20-pin CPU connector. Place key in liftgate lock cylinder and turn key to unlock position. Measure resistance between Light Green/Red wire at CPU connector and ground. If resistance is less than 5 ohms in unlock position, and greater than 10,000 ohms with key removed, go to step 10). If resistances are not as specified, replace lock cylinder switch.
  8. Disconnect 20-pin CPU connector. Place key in liftgate lock cylinder and turn key to unlock position. Measure resistance between Light Green/Red wire and Black wire at CPU connector. If resistance is less than 5 ohms in unlock position, and greater than 10,000 ohms with key removed, go to step 9). If resistances are not as specified, replace lock cylinder switch.
  9. Unplug liftgate lock cylinder switch connector. Measure resistance between Black wire at switch connector and ground. If resistance is greater than 5 ohms, repair Black wire between liftgate lock cylinder switch and ground. If resistance is less than 5 ohms, repair Light Green/Red wire between liftgate lock cylinder switch and CPU connector.
  10. Disconnect 20-pin CPU connector. Unlock doors manually. Measure resistance between Yellow wire at CPU connector and ground. Measure resistance between Brown/Yellow wire at CPU connector and ground. Lock doors manually. If resistances are less than 5 ohms in unlock position, and greater than 10,000 ohms with doors locked, go to step 13). If resistances are not as specified, go to next step.
  11. Unplug left and right door lock motor switch connectors. On right door lock motor switch, measure resistance between Yellow wire and Black wire while operating door lock to lock and unlock positions. On left door lock motor switch, measure resistance between Brown/Yellow wire and Black wire while operating door lock to lock and unlock positions. If resistance is less than 5 ohms in unlock position, and greater than 10,000 ohms in lock position, go to next step. If not as specified previously, replace power door lock motor switch.
  12. Remove 15 amp ROOM fuse. Unplug left and right door lock motor switch connectors. Measure resistance of Black wire between switch connector and ground. If resistance is less than 5 ohms, repair Yellow wire (Black/Yellow wire for left door lock switch) between switch and CPU connector. If resistance is greater than 5 ohms, repair Black wire.
  13. Unplug CPU connector from interior fuse junction panel. Measure voltage at Pin No. 3 at warning chime module connector. If voltage is greater than 10 volts, go to next step. If voltage is less than 10 volts, replace interior fuse junction panel.
  14. Unplug CPU connector from interior fuse junction panel. Measure resistance at Pin No. 4 at warning chime module connector and ground. If resistance is greater than 5 ohms, go to next step. If resistance is 5 ohms or less, replace warning chime module.
  15. Unplug warning chime module connector from interior fuse junction panel. Measure resistance of Black wire between warning chime module connector and ground. If resistance is less than 5 ohms, replace interior fuse junction panel. If resistance is 5 ohms or greater, repair Black wire.
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