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Home >> Chevrolet >> 2012 >> Cruze Eco, Automatic Trans >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 5 (Engine Controls/Fuel - 1.8L - DTC Diagnostics, Troubleshooting & Diagnosis) >> Diagnostic Information and Procedures >> DTC P0335 or P0336 (LUW) >> Circuit/System Testing

Circuit/System Testing

WARNING: This page is about a different variant/trim than selected.
NOTE:

You must perform the Circuit/System Verification before proceeding with Circuit/System Testing. If the B26 Crankshaft Position Sensor lead is damaged in any way, replace the B26 Crankshaft Position Sensor.

  1. Ignition OFF, disconnect the harness connector at the B26 Crankshaft Position Sensor.
  2. Ignition OFF, all vehicles systems OFF. It may take up to 2 min 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.
  3. Ignition ON, test for 4.8-5.2 V between the 5 V reference circuit terminal 3 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.
  4. Test for 4.8-5.2 V between the signal circuit terminal 1 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.
  5. Ignition OFF, connect a 3 A fused jumper wire to the B26 Crankshaft Position Sensor signal circuit terminal 1.
    6. NOTE:

    Additional DTCs may set when performing this test.

  6. Ignition ON, momentarily touch the end of the fused jumper wire to ground while monitoring the scan tool Crankshaft Position Sensor Active Counter parameter. The parameter should increment.
    • If the parameter does not increment, replace the K20 Engine Control Module.
  7. DTC P0336 should not be set.
    • If the DTC P0336 is set, inspect the engine for the conditions listed below and repair as necessary:
    • Excessive play or looseness of the crankshaft position sensor or the reluctor wheel
    • Improper installation of the crankshaft position sensor or the reluctor wheel
    • Foreign material passing between the crankshaft position sensor and the reluctor wheel
    • Excessive air gap between the crankshaft position sensor and the reluctor wheel
    • Physical damage to the crankshaft position sensor or the reluctor wheel
  8. If all circuits and components test normal, test or replace the B26 Crankshaft Position Sensor.
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