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Test 84A - Ignition Run/Acc 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. 20 (Dark Blue wire) of VTA module connector.
  2. If voltage is more than 10 volts, replace VTA module. Perform VERIFICATION PROCEDURE VER-1. If voltage is less than 10 volts, remove and inspect fuse No. 18 from fuse block. See Figure . If fuse is blown, go to step 4).
  3. If fuse is okay, check voltage of Black/White wire (in fuse block) of fuse No. 18. If voltage is more than 10 volts, repair open Dark Blue wire between fuse and VTA module. Perform VERIFICATION PROCEDURE VER-1. If voltage is less than 10 volts, repair open Black/White wire between ignition switch and fuse block. Perform VERIFICATION PROCEDURE VER-1.
  4. If fuse was blown in step 2), turn ignition off. With DRB-II in ohmmeter mode, check resistance on terminal No. 20 (Dark Blue wire) of VTA module connector. If resistance is less than 5 ohms, repair short to ground in Dark Blue wire and replace fuse No. 18. Perform VERIFICATION PROCEDURE VER-1.
  5. If resistance is more than 5 ohms, reconnect VTA module. Check resistance on terminal No. 20 (Dark Blue wire) of VTA module connector. If resistance is more than 5 ohms, replace fuse No. 18. Perform VERIFICATION PROCEDURE VER-1. If resistance is less than 5 ohms, replace VTA module and fuse No. 18. Perform VERIFICATION PROCEDURE VER-1.
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