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Home >> Mazda >> 2021 >> 3 Base >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> On-Board Diagnostic - Engine Control System (VINS 7, L, M) (1 Of 4) >> DTC P0014-00: Hydraulic Variable Valve Timing Control System: Over-Advanced (VIN M) >> PID Item/Simulation Item Used In Diagnosis >> Function Inspection Using M-MDS

Function Inspection Using M-MDS

DIAGNOSTIC PROCEDURE - FUNCTION INSPECTION USING M-MDS

Step Inspection Results Action
1 PURPOSE: VERIFY RELATED REPAIR INFORMATION OR SERVICE INFORMATION AVAILABILITY
  • Verify related Service Bulletins, on-line repair information, or Service Information availability.
  • Is any related Information available?
 Yes Perform repair or diagnosis according to the available information.
  • If the vehicle is not repaired, go to the next step.
No Go to the next step.
2 PURPOSE: RECORD VEHICLE STATUS WHEN DTC WAS DETECTED TO UTILIZE WITH REPEATABILITY VERIFICATION
  • Record the freeze frame data/snapshot data.
    NOTE:
    • Recording can be facilitated using the screen capture function of the PC.
 - Go to the next step.
3 PURPOSE: INSPECT FOR OTHER RELATED DTCs
  • Perform the DTC inspection for the PCM. (See DTC INSPECTION .)
  • Are any of the following DTCs displayed?
  • P0335:00
  • P0365:00
  • P2090:00
    • P2091:00
 Yes Repair the malfunctioning location according to the applicable DTC troubleshooting.
(See DTC P0335-00: .)
(See DTC P0365-00: .)
(See DTC P2090-00: (VIN M) .)
(See DTC P2091-00: (VIN M) .)
Go to the next step.
No Go to the next step.
4 PURPOSE: VERIFY IF DIAGNOSTIC RESULT IS AFFECTED BY DTC OCCURRING FROM ENGINE OIL PRESSURE
  • Perform the DTC inspection for the PCM. (See DTC INSPECTION .)
  • Are any of the following DTCs displayed?
    • P0524:00
 Yes Repair the malfunctioning location according to the applicable DTC troubleshooting.
(See DTC P0524-00: (VIN M) .)
Go to the next step.
No Go to the next step.
5 PURPOSE: VERIFY CONFORMITY OF ACTUAL EXHAUST VALVE TIMING AND DETERMINE IF MALFUNCTION IS CAUSED BY OCV FOR HYDRAULIC VARIABLE VALVE TIMING SYSTEM OR CONNECTOR RELATED
  • VLV_TIMING_ACT_EX
    • VLV_TIMING_DSD_EX
  • Implement the repeatability verification procedure. (See REPEATABILITY VERIFICATION PROCEDURE .)
  • Does the monitor value of the PID item VLV_TIMING_ACT_EX conform to the VLV_TIMING_DSD_EX PID value?
 Yes Go to the next step.
No Go to Troubleshooting Diagnostic Procedure to perform the procedure from Step 1.
6 PURPOSE: VERIFY CONNECTOR CONNECTIONS
  • Start the engine.
  • Access the VLV_TIMING_ACT_EX PID using the M-MDS. (See PID/DATA MONITOR INSPECTION .)
  • Does the PID value fluctuate when the following connectors are shaken?
  • OCV for hydraulic variable valve timing system
    • PCM
 Yes Repair or replace the applicable wiring harness or connector parts.
Go to Troubleshooting Diagnostic Procedure to perform the repair completion verification.
No Go to Troubleshooting Diagnostic Procedure to perform the procedure from Step 1.
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