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Home >> Chevrolet >> 2012 >> Cruze Eco, Automatic Trans >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 5 (Engine Controls/Fuel - 1.8L - DTC Diagnostics, Troubleshooting & Diagnosis) >> Diagnostic Information and Procedures >> DTC P0351-P0354 (LUW) >> Circuit/System Testing

Circuit/System Testing

WARNING: This page is about a different variant/trim than selected.
  1. Ignition OFF, disconnect the harness connector at the T8 Ignition Coil.
  2. Test for less than 5 Ω between the ground circuit terminal B and ground
    • If greater than the specified range, repair the ground circuit for an open/high resistance.
  3. Ignition OFF and all vehicle systems OFF. It may take up to 2 min for all vehicle systems to power down. Test for less than 5 Ω between the low reference circuit terminal C and ground.
    • If greater than the specified range, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the K20 Engine Control Module.
  4. Ignition ON, verify that a test lamp illuminates between the ignition voltage circuit terminal A and ground.
    • If the test lamp does not illuminate, test the ignition voltage circuit for a short to ground or an open/high resistance. If the circuit tests normal and the ignition voltage circuit fuse is open, test all components connected to the ignition voltage circuit and replace as necessary.
    5. NOTE:

    Set the DMM to the DC Hertz scale for this test.

  5. Connect a DMM between the appropriate ignition control circuit listed below and ground.
    • Ignition coil 1 control terminal D
    • Ignition coil 2 control terminal E
    • Ignition coil 3 control terminal F
    • Ignition coil 4 control terminal G
  6. Engine cranking, test for greater than 1.5 hertz between each of the appropriate ignition control circuit and ground.
    • If less than the specified range, test the ignition control circuit for a short to voltage, short to ground, or an open/high resistance. If the circuit tests normal, replace the K20 Engine Control Module.
  7. If all circuits test normal, test or replace the T8 Ignition Coil.
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