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Home >> Suzuki >> 2004 >> Swift + >> Repair and Diagnosis >> External Pages >> Different car >> Section 100 (Engine Controls And Fuel - 1.6L - DTC P0016 To DTC P0315) >> DTC P0201, P0202, P0203, or P0204 >> Circuit/System Testing
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Circuit/System Testing

WARNING: This page is about a different car, the 2008 Suzuki Swift +, 2008 Pontiac Wave, and 2008 Chevrolet Aveo. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition OFF, disconnect the harness connector at the appropriate fuel injector.
  2. Ignition ON, verify that a test lamp illuminates between the ignition 1 voltage circuit terminal 1 and ground.
    • If the test lamp does not illuminate, repair the ignition 1 voltage circuit for a short to ground or an open/high resistance. Replace the fuse if necessary.
  3. Ignition OFF, connect a J 34730-405  between the control circuit terminal 2 and the ignition 1 voltage circuit terminal 1.
  4. Engine running, the test lamp should flash.
    • If the test lamp is always ON, test the control circuit for a short to ground. If circuit tests normal, replace the ECM.
    • If the test lamp is always OFF, test the control circuit for a short to voltage or an open/high resistance. If circuit tests normal, replace the ECM.
  5. If all circuits test normal, test or replace the fuel injector.
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