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DTC B1605: Anti-Theft Control Module Fault

  1. Erase DTC. If DTC does not reoccur, fault is intermittent. Check connectors and grounds for good terminal contact. If DTC reoccurs, go to next step.
  2. Check anti-theft control module voltage supply at terminals No. 10 and 25. See Figure . Check anti-theft control module ground at terminal No. 13. Reinstall control module. If DTC reoccurs, replace control module. If DTC does not reoccur, fault was intermittent.
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