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Home >> Mazda >> 2013 >> 5 Grand Touring >> Repair and Diagnosis >> External Pages >> Different car >> Section 59 (Engine Controls [Self-Diagnostics 3.0L]) >> Diagnostic Tests >> DTC P2093: Left Oil Control Valve Actuator Circuit - High Input >> Diagnostic Procedure

Diagnostic Procedure

WARNING: This page is about a different car, the 2003 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.
  1. If FREEZE FRAME DATA has been recorded, go to next step. If FREEZE FRAME DATA has not been recorded, record FREEZE FRAME DATA. Go to next step.
  2. Verify Related Repair Information Availability -  Check for related Service Bulletins and/or on-line repair information availability. If any related repair information is available, perform repair or diagnosis according to available repair information. If vehicle is not repaired, go to next step. If related repair information is not available, go to next step.
  3. Inspect Left OCV Connector For Poor Connection -  Turn ignition off. Disconnect left OCV harness connector. Check for poor connection (such as damaged, pulled-out pins, and corrosion). If malfunction is not present, go to next step. If any malfunction is present, repair or replace terminal. After repair, go to step  7.
  4. Inspect Left OCV -  Perform OCV Inspection. Refer to OIL CONTROL VALVE - MAZDA6 & MIATA ONLY under VARIABLE VALVE TIMING in SYSTEM & COMPONENT TESTING - MAZDA6, MIATA, MPV, PROTEGE & PROTEGE5 article. If left OCV is okay, go to next step. If left OCV is faulty, replace left OCV. After repair, go to step  7.
  5. Inspect Left OCV Control Circuit For Short To Power -  Turn ignition on, engine off. Measure voltage between left OCV terminal "A" (Brown/Blue wire) and body ground. See Figure. If battery voltage is not present, go to next step. If battery voltage is present, repair short circuit to power in suspected wire between left OCV harness connector terminal "A" (Brown/Blue wire) and PCM 104-pin harness connector terminal No. 102 (Brown/Yellow wire) or replace wire harness. See ENGINE PERFORMANCE in SYSTEM WIRING DIAGRAMS article in ELECTRICAL. After repair, go to  7.
  6. Inspect PCM Connector For Poor Connection -  Turn ignition off. Disconnect PCM 104-pin harness connector. Inspect for poor connection (such as damaged, pulled-out terminals or corrosion). If malfunction is not present, go to next step. If malfunction is present, repair terminal or replace wire harness. After repair, go to next step.
  7. Verify Trouble Shooting Of DTC P2093 Is Completed -  Make sure to reconnect all disconnected connectors. Turn ignition on, engine off. Clear DTC from PCM memory using WDS or equivalent. See CLEARING DIAGNOSTIC TROUBLE CODES  under SELF-DIAGNOSTIC SYSTEM. Start engine and warm up completely. If same DTC is not present, go to next step. If same DTC is present, replace PCM. For PCM removal and installation, see POWERTRAIN CONTROL MODULE under COMPUTERIZED ENGINE CONTROLS in REMOVAL & INSTALLATION article. After repair, go to next step.
  8. Verify After Repair Procedure -  Using scan tool, perform After Repair Procedure. See AFTER REPAIR PROCEDURE . If any DTCs are present, go to appropriate DTC inspection. Refer to DIAGNOSTIC TROUBLE CODE DEFINITIONS . If no DTCs are present, trouble shooting is complete.
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