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Home >> Mazda >> 2021 >> CX-5 Signature >> Repair and Diagnosis >> External Pages >> Different car >> Section 54 (Symptom Troubleshooting - Engine Controls) >> Engine Control System Operation Inspection >> Hydraulic Variable Valve Timing Control System Operation Inspection >> When idling cannot be continued
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When idling cannot be continued

WARNING: This page is about a different car, the 2016 Mazda CX-5. However, it is still accessible from the selected car via links, so may be relevant.
  1. Connect the M-MDS to the DLC-2 and verify that DTC P2090:00 or P2091:00 is displayed. (See ON-BOARD DIAGNOSTIC TEST .)
  2. Remove the OCV and verify that the spool valve is at maximum advanced position. (See OIL CONTROL VALVE (OCV) REMOVAL/INSTALLATION .)
  3. Connect the OCV.
  4. Switch the ignition ON (engine off).
  5. Verify that the spool valve is at the maximum advanced position.
    • If the spool valve is stuck in the retard direction, inspect for the following:
      • Short circuit in wiring harnesses or connectors between OCV and PCM
  6. Inspect the hydraulic variable valve timing actuator. (See HYDRAULIC VARIABLE VALVE TIMING ACTUATOR INSPECTION .)