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.
- Ignition OFF, disconnect the harness connector at the generator.
- 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.
- If the circuit tested normal and the ECM parameter changed from 0 percent to above 95 percent, replace the generator.