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Home >> Chevrolet >> 2005 >> Aveo Base, 4D Hatchback >> Repair and Diagnosis >> External Pages >> Different car >> Section 99 (Engine Controls And Fuel - 1.6L - DTC P0016 To DTC P0315) >> DTC P0122, P0123, P0222, P0223, or P2135 (w/TAC) >> Circuit/System Testing (w/TAC)

Circuit/System Testing (w/TAC)

WARNING: This page is about a different car, the 2008 Suzuki Swift +, 2008 Pontiac Wave, and 2008 Chevrolet Aveo. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition OFF, disconnect the harness connector at the throttle body assembly.
  2. Ignition OFF, test for 5 ohms or less of resistance between the low reference circuit terminal 4 and ground.
    • If greater than the specified range, test the low reference circuit for a short to voltage, or an open/high resistance. If the circuit tests normal, replace the ECM.
  3. Ignition ON, test for 4.8-5.2 volts between the 5-volt reference circuit terminal 1 and ground.
    • If less than the specified range, test the 5-volt reference circuit for a short to ground or open/high resistance. If the circuit tests normal, replace the ECM.
    • If greater than the specified range, test the 5-volt reference circuit for a short to voltage. If the circuit tests normal, replace the ECM.
  4. Verify both scan tool TP sensor percentage parameters are between 80-88 percent.
    • TP sensor 1 signal circuit terminal 3
    • TP sensor 2 signal circuit terminal 2
  5. If less than the specified range, test the appropriate signal circuit for a short to ground. If the circuit tests normal, replace the ECM.
    • If greater than the specified range, test the appropriate signal circuit for a short to voltage. If the circuit tests normal, replace the ECM.
  6. Install a 3A fused jumper wire between TP sensor 1 signal circuit terminal 3 and ground. Verify the scan tool TP sensor 1 percentage parameter is less than 2 percent.
    • If greater than the specified range, test the signal circuit for an open/high resistance. If the circuit tests normal, replace the ECM.
  7. Install a 3A fused jumper wire between TP sensor 2 signal circuit terminal 2 and the 5-volt reference circuit terminal 1. Verify the scan tool TP sensor 2 percentage parameter is less than 2 percent.
    • If greater than the specified range, test the signal circuit for an open/high resistance. If the circuit tests normal, replace the ECM.
  8. If all circuits test normal, test or replace the throttle body assembly.
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