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Home >> Suzuki >> 2007 >> Swift + >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls & Fuel - 1.6L - Troubleshooting & Diagnosis >> Electronic Ignition (EI) System Diagnosis >> Circuit/System Testing
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Circuit/System Testing

    IMPORTANT: Do not perform this diagnostic procedure if you were not sent here from a misfire DTC or the Engine Cranks but Does Not Run diagnostic.
  1. Ignition OFF, disconnect the harness connector of the ignition coil.
    2. IMPORTANT: The test lamp is used to load the circuit and may not illuminate.
  2. Connect a test lamp between the ignition 1 voltage circuit of the ignition coil and ground.
  3. Command the fuel pump relay ON with a scan tool and test for battery voltage between the ignition 1 voltage circuit of the ignition coil and ground.
    • If less than B+, repair the ignition 1 voltage circuit of the ignition coil for a short to ground or an open/high resistance.
  4. Ignition OFF, connect a DMM between the ignition 1 voltage circuit of the ignition coil from the fuse to the harness connector terminal of the ignition coil.
    • If more than 2 ohms, repair the high resistance on the ignition 1 voltage circuit.
  5. If all circuits/connections test normal, replace the ignition coil.
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