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Home >> Chevrolet >> 2009 >> Chevy Express G2500, Van Cargo Extended, 6.6 6 >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System & Fuel System - 6.6L LMM - DTC P0016 To DTC P02E0 >> DTC P02E0 >> Circuit/System Testing

Circuit/System Testing

  1. With the ignition OFF, disconnect the ECM and the IAF valve. Test the following circuits for a short to voltage, short to ground, or open/high resistance:
    • AI Motor Control 1 circuit terminal A
    • AI Motor Control 2 circuit terminal B
    • If a condition is found repair the affected circuit.
  2. Connect the ECM. Ignition ON, and the IAF disconnected, measure for 12 volts between the following circuits and ground:
    • IA Motor Control 1 circuit terminal A
    • IA Motor Control 2 circuit terminal B
    • If voltage is less than 12 volts on either circuit, replace the ECM.
    • If the voltage is 12 volts on both circuits, replace the IAF valve.
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