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Component Testing

  1. With the key out of ignition and then with the key in the ACC position, measure for infinite resistance between the battery positive voltage and the off/run/crank voltage terminals of the ignition switch. Repeat the same measurement between ignition key resistor signal and off/run/crank voltage terminals of the ignition switch.
    • If less than infinite ohms, replace the ignition switch.
  2. With the key in ignition, in OFF position, measure for 0 ohms between the battery positive voltage and the off/run/crank voltage terminals at the ignition switch.
    • If over 0 ohms, replace the ignition switch.
  3. With the key in the RUN position, measure for 0 ohms between the ignition key resistor signal and the off/run/crank voltage terminals at the ignition switch.
    • If over 0 ohms, replace the ignition switch.
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