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Home >> Pontiac >> 2009 >> Vibe Base, 2.4 0, AWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 9 (Engine Control System & Fuel System - 1.8L (Lay) - DTC P0010 To DTC P0420) >> DTC P0365, P0367, or P0368 >> 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 exhaust CMP sensor.
  2. Ignition OFF, test for less than 10 ohms between the CMP sensor signal low circuit terminal 2 and ground G104.
    • If greater than the specified range, test the signal low circuit for an open/high resistance. If the circuit tests normal, replace the PCM.
  3. Ignition ON, test for 4.8-5.0 volts on the CMP sensor 5-volt reference circuit terminal 3.
    • If less than the specified range, test for an open/high resistance or short to ground in the 5-volt reference circuit.
    • If greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the PCM.
  4. Ignition ON, test for 4.8-5.0 volts on the CMP sensor signal high circuit terminal 1.
    • If less than the specified range, test for an open/high resistance or short to ground in the signal high circuit.
    • If greater than the specified range, test the signal high circuit for a short to voltage. If the circuit tests normal, replace the PCM.
  5. Install 3 jumper wires between the harness connector and the CMP sensor.
  6. Engine running, test for greater than 500 mV AC between the CMP signal high circuit terminal 1 and ground.
    • If less than the specified range, inspect the exhaust camshaft for a damaged CMP sensor reluctor wheel. If the camshaft is normal, replace the CMP sensor.
  7. If all circuits test normal, replace the PCM.
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