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HOMESERVICE MANUALSOLDSMOBILE2004BRAVADA AWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 266 (ENGINE CONTROLS - REMOVAL & INSTALLATION)PROGRAMMINGCKP SYSTEM VARIATION LEARN PROCEDURE
2004 Oldsmobile Bravada AWD

CKP System Variation Learn Procedure

2004 Oldsmobile Bravada AWDSECTION CKP System Variation Learn Procedure
WARNING: This page is about a different car, the 2003 Pontiac Sunfire and 2003 Chevrolet Cavalier. However, it is still accessible from the selected car via links, so may be relevant.
  1. Connect scan tool to DLC.
  2. Monitor the Powertrain Control Module (PCM) for DTCs using scan tool. If other DTCs are set, except DTCs P1336, refer to DIAGNOSTIC TROUBLE CODE DEFINITIONS under SELF-DIAGNOSTICS SYSTEM in SELF-DIAGNOSTICS - 2.2L ALERO, CAVALIER, GRAND AM & SUNFIRE - GASOLINE article for the applicable DTC that set.
  3. Select the crankshaft position variation learn procedure using the scan tool.
  4. Observe the fuel cut-off specifications for that engine.
  5. The scan tool instructs you to perform the following:
    • Accelerate to Wide Open Throttle (WOT).
    • Release when the fuel cut-off occurs.
    • Engine should not accelerate beyond calibrated RPM value.
    • Release throttle immediately if value is exceeded.
    • Block drive wheels.
    • Set parking brake.
    • DO NOT apply brake pedal.
    • Cycle the ignition switch from OFF to ON position.
    • Apply and hold the brake pedal.
    • Start and idle engine.
    • Turn A/C OFF.
    • Vehicle must remain in Park or Neutral.
    • The scan tool monitors certain component signals to determine if all the conditions are met to continue with the procedure. The scan tool only displays the condition that inhibits the procedure. The scan tool monitors the following components:
      1. Crankshaft Position Sensors Activity  - If there is a CKP sensor condition, refer to the applicable DTC that set.
      2. Camshaft Position Sensor Activity  - If there is a CMP sensor condition, refer to the applicable DTC that set.
      3. Engine Coolant Temperature  - If the engine coolant temperature is not warm enough, idle the engine until the engine coolant temperature reaches the correct temperature.
  6. Enable the crankshaft position system variation learn procedure using the scan tool.
    7. NOTE: While the learn procedure is in progress, release the throttle immediately when the engine starts to decelerate. The engine control is returned to the operator and the engine responds to throttle position after the learn procedure is complete.
  7. Accelerate to WOT.
  8. Release when the fuel cut-off occurs.
  9. The scan tool displays LEARN STATUS: LEARNED THIS IGNITION. If the scan tool indicates that DTC P1336 ran and passed, the CKP variation learn procedure is complete. If the scan tool indicates DTC P1336 failed or did not run, go to DTC P1336: CRANKSHAFT POSITION SYSTEM VARIATION NOT LEARNED under DIAGNOSTIC TESTS in SELF-DIAGNOSTICS - 2.2L ALERO, CAVALIER, GRAND AM & SUNFIRE - GASOLINE article. If any other DTCs set, go to DIAGNOSTIC TROUBLE CODE DEFINITIONS under SELF-DIAGNOSTICS SYSTEM in SELF-DIAGNOSTICS - 2.2L ALERO, CAVALIER, GRAND AM & SUNFIRE - GASOLINE article for the applicable DTC that set.
  10. Turn ignition switch to OFF position for 30 seconds after the learn procedure is completed successfully.
RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.