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Home >> Chevrolet >> 2011 >> Volt >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls And Fuel - 1.4L (LUU) - DTC P0335 Through DTC P1255/P064A >> DTC P0341 or P0366 >> Circuit/System Testing

Circuit/System Testing

  1. Ignition OFF, inspect the appropriate B23F Camshaft Position Sensor - Intake or B23E Camshaft Position Sensor - Exhaust sensor for correct installation.
    • If the B23F Camshaft Position Sensor - Intake or B23E Camshaft Position Sensor - Exhaust sensor is loose, inspect the sensor and the O-ring for damage, and replace as necessary.
  2. Disconnect the harness connector at the appropriate B23F Camshaft Position Sensor - Intake or B23E Camshaft Position Sensor - Exhaust sensor.
  3. Ignition OFF and all vehicle systems OFF, it may take 2 minutes for all Vehicle systems to power down, test for less than 5 Ω between the low reference circuit terminal 2 and ground.
    • If greater than the specified range, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the K20 Engine Control Module.
  4. Service Mode active, test for 4.8-5.2 V between the 5 V reference circuit terminal 1 and ground.
    • If less than the specified range, test the 5 V reference circuit for a short to ground, or an open/high resistance. If the circuit tests normal, replace the K20 Engine Control Module.
    • If greater than the specified range, test the 5 V reference circuit for a short to voltage. If the circuit tests normal, replace the K20 Engine Control Module.
  5. Test for 4.8-5.2 V between the signal circuit terminal 3 and ground.
    • If less than the specified range, test the signal circuit for a short to ground, or an open/high resistance. If the circuit tests normal, replace the K20 Engine Control Module.
    • If greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the K20 Engine Control Module.
  6. Ignition OFF, connect a 3 A fused jumper wire to the B23F Camshaft Position Sensor - Intake or B23E Camshaft Position Sensor - Exhaust signal circuit terminal 3.
  7. Service Mode active, momentarily touch the end of the fused jumper wire to ground while monitoring the scan tool Camshaft Position Active Counter. The Camshaft Position Active Counter should increment.
    • Physical damage to the B23F Camshaft Position Sensor - Intake or B23E Camshaft Position Sensor - Exhaust sensor or the reluctor wheel
    • Excessive play or looseness of the B23F Camshaft Position Sensor - Intake or B23E Camshaft Position Sensor - Exhaust sensor or the reluctor wheel
    • Excessive camshaft end play
    • Improper installation of the B23F Camshaft Position Sensor - Intake or B23E Camshaft Position Sensor - Exhaust sensor or the reluctor wheel
    • Foreign material passing between the B23F Camshaft Position Sensor - Intake or B23E Camshaft Position Sensor - Exhaust sensor and the reluctor wheel
    • The timing chain and tensioner for wear or damage
    • If any of the above conditions exists, repair as necessary.
  8. If all circuits test normal, replace the B23F Camshaft Position Sensor - Intake or B23E Camshaft Position Sensor - Exhaust sensor.
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