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Test 85A - Ignition Run Circuit

NOTE: For connector terminal identification, see CONNECTOR IDENTIFICATION  . For appropriate wiring diagram, see WIRING DIAGRAMS  at end of article.
  1. Turn ignition off. Disconnect Vehicle Theft Alarm (VTA) module. See Figure . Turn ignition on (engine off). With DRB-II in voltmeter mode, check voltage on terminal No. 3 (Dark Blue/White wire) of VTA module connector. If voltage is more than 10 volts, replace VTA module. Perform VERIFICATION PROCEDURE VER-1.
  2. If voltage is less than 10 volts, remove and inspect fuse No. 8 from fuse block. See Figure . If fuse is blown, go to step 4). If fuse is okay, check voltage on Dark Blue wire (in fuse block) of fuse No. 8.
  3. If voltage is more than 10 volts, repair open Dark Blue/White wire between fuse block and VTA module. Perform VERIFICATION PROCEDURE VER-1. If voltage is less than 10 volts, repair open Dark Blue wire between ignition switch and fuse block. Perform VERIFICATION PROCEDURE VER-1.
  4. Turn ignition off. With DRB-II in ohmmeter mode, check resistance on terminal No. 3 (Dark Blue/White wire) of VTA module connector. If resistance is less than 5 ohms, repair short to ground in Dark Blue/White wire. Replace fuse No. 8. Perform VERIFICATION PROCEDURE VER-1.
  5. If resistance is more than 5 ohms, reconnect VTA module. Check resistance on terminal No. 3 (Dark Blue/White wire) of VTA module connector. If resistance is more than 5 ohms, replace fuse No. 8. Perform VERIFICATION PROCEDURE VER-1. If resistance is less than 5 ohms, replace VTA module and fuse No. 8. Perform VERIFICATION PROCEDURE VER-1.
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