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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 P0685, P0689, P0690, or P1682 (LUW) >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different variant/trim than selected.
NOTE:
  • A short to voltage on other components may cause DTC P0690 to set. If other DTCs are set, diagnose those DTCs first.
  • If you were sent here from engine cranks but does not run proceed to circuit/system testing.
  1. Ignition ON, command the Engine Controls (EC) Ignition Relay ON and OFF with a scan tool while observing the parameters listed below. The parameters should not display Malfunction.
    • Engine Controls Ignition Relay Control Circuit Low Voltage Test Status
    • Engine Controls Ignition Relay Control Circuit Open Test Status
    • Engine Controls Ignition Relay Control Circuit High Voltage Test Status
  2. Ignition ON, observe the DTC information with a scan tool. DTC P0685, P0689, P0690, or P1682 should not set.
  3. Observe the scan tool Ignition 1 Voltage Signal and the Engine Controls Ignition Relay Feedback Signal parameters. There should be less than 3 V difference between the two parameters.
  4. Operate the vehicle within the conditions for running the DTC to verify the DTC does not reset. You may also operate the vehicle within the conditions that observed from the freeze frame/failure records data.
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