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Home >> Chevrolet >> 2011 >> Caprice >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls And Fuel - 6.0L - DTC Diagnostics And Troubleshooting >> Diagnostic Information and Procedures >> DTC P0336 >> Circuit/System Testing

Circuit/System Testing

NOTE:

You must perform the Circuit/System Verification before proceeding with Circuit/System Testing.

  1. DTC P0336 should not be set.
    • If DTC P0336 is set, inspect the engine for the conditions listed below and repair as necessary:
    • Excessive play or looseness of the CKP sensor or the reluctor wheel.
    • Improper installation of the CKP sensor.
    • Foreign material passing between the CKP sensor and the reluctor wheel.
    • Excessive air gap between the CKP sensor and the reluctor wheel.
    • Engine oil for debris.
    • Timing chain, tensioner, and sprockets for wear or damage.
  2. Ignition OFF, disconnect the harness connector at the B26 crankshaft position sensor.
  3. Ignition OFF, vehicle systems OFF. It may take 2 minutes, test for less than 1 Ω between the low reference circuit, terminal B, and ground.
    • If greater than the specified value, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the K20 engine control module.
  4. Ignition ON, test for 4.8-5.2 V between the 5 V reference circuit, terminal C and ground.
    • If less than the specified range, test the 5 V reference circuit for an open/high resistance or short to ground. 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. Ignition ON, test for 4.8-5.2 V between the signal circuit terminal A and ground.
    • If less than the specified range, test the signal circuit for an open/high resistance or short to ground. 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 signal circuit terminal A.
    7. NOTE:

    Additional DTCs may set when performing this test.

  7. Ignition ON, momentarily touch the other end of the fused jumper wire to ground repeatedly while monitoring the scan tool Crankshaft Position Sensor Active Counter parameter. The Crankshaft Position Active counter, should increment.
    • If the Crankshaft Position Active counter does not increment, replace the K20 engine control module.
  8. If all circuits and components test normal, test or replace the B26 crankshaft position sensor.
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