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Home >> Chevrolet >> 2010 >> Traverse LT, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 510 (Engine Controls And Fuel - 3.6L (LLT) - DTC P0340 To DTC P2635 And Diagnostic Information And Procedures) >> Diagnostic Information and Procedures >> DTC P1248-P124D: Cylinder Injector >> Circuit/System Testing

Circuit/System Testing

WARNING: This page is about a different car, the 2016 GMC Acadia, 2016 Chevrolet Traverse, and 2016 Buick Enclave. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition OFF and all vehicle systems OFF, disconnect the appropriate multi-way harness connector X160 or X161, at the rear of the intake manifold, ignition ON. It may take up to 2 min for all vehicle systems to power down.
  2. Verify the scan tool Cylinder 1-6 Injector Control Circuit Status parameters display Open.
    • If not the specified value 
    1. Ignition OFF, disconnect the harness connector at the K20 Engine Control Module.
      2. NOTE:

      Test on the Engine Control Module side of the multi-way harness connector.

    2. Test for infinite resistance between the appropriate Q17 Fuel Injector high control circuit and low control circuit.
      • If less than infinite, repair the short between the circuits.
      • If infinite resistance, replace the K20 Engine Control Module.
    • If the specified value 
    3. NOTE:

    Testing for the following steps is performed on the fuel injector side of the multi-way harness connector. It may be necessary to remove the intake manifold to isolate the condition.

  3. Ignition OFF, disconnect the harness connector at the appropriate Q17 Fuel Injector.
  4. Test for infinite resistance between the Q17 Fuel Injector high control circuit and low control circuit.
    • If less than infinite 

      Repair the short between the circuits.

    • If infinite resistance 
  5. Test or replace the appropriate Q17 Fuel Injector.
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