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Circuit / System Testing

WARNING: This page is about a different car, the 2007 Suzuki XL7. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition OFF, disconnect the harness connector at the generator.
  2. Ignition ON, engine OFF, observe the scan tool GEN-F Terminal Signal parameter, while repeatedly probing the generator field duty cycle circuit with a test lamp connected to battery positive voltage. The parameter should change from 0 percent to above 95 percent.
    • If the parameter was not affected by the test lamp, test the circuit for a short to ground or an open / high resistance. If the circuit tests normal, replace the ECM.
  3. If the circuit tested normal and the ECM parameter changed from 0 percent to above 95 percent, replace the generator.
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