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Test 1: Anti-Theft Control Module

  1. Connect harness adapter and breakout box to anti-theft control module. Measure voltage between terminals No. 1 and 4 at breakout box. Battery voltage should exist. Turn ignition switch to ON position. Measure voltage between terminals No. 4 and 18 at breakout box. Battery voltage should exist. If voltage is as specified, go to next step. If voltage is not as specified, check wiring. See WIRING DIAGRAMS  .
  2. Turn ignition off. Measure voltage between ground and terminal No. 1 at breakout box. Battery voltage should exist. Turn ignition switch to ON position. Measure voltage between ground and terminal No. 18 at breakout box. Battery voltage should exist. If voltage is as specified, anti-theft control module voltage supply is okay at this time. If voltage is not as specified, check wiring. See WIRING DIAGRAMS  .
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