LEMON Manuals: Even more car manuals for everyone
Home >> Chevrolet >> 2013 >> Sonic RS, Standard Trans >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 11 (Engine Controls/Fuel - 1.8L (LUW, LWE) - DTC P0010 To DTC P0442) >> Diagnostic Information and Procedures >> DTC P0325, P0327, or P0328 (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 B68 Knock Sensor, ignition ON.
  2. Test for 1-4 V between each of the following circuits and ground:
    • Signal terminal 1
    • Low reference terminal 2
    • If less than 1 V 
    1. Ignition OFF, disconnect the X2 harness connector at the K20 Engine Control Module.
    2. Test for infinite resistance between the affected circuit and ground.
      • If less than infinite resistance, repair the short to ground on the circuit.
      • If infinite resistance
    3. Test for less than 2 Ω in the affected circuit end to end.
      • If 2 Ω or greater, repair the open/high resistance in the circuit.
      • If less than 2 Ω, replace the K20 Engine Control Module.
    • If greater than 4 V 
    1. Ignition OFF, disconnect the X2 harness connector at the K20 Engine Control Module, ignition ON.
    2. Test for less than 1 V between the affected circuit and ground.
      • If 1 V or greater, repair the short to voltage on the circuit.
      • If less than 1 V, replace the K20 Engine Control Module.
    • If between 1-4 V 
  3. Replace the B68 Knock Sensor.
scientia non olet · About LEMON Manuals