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Home >> Mazda >> 2022 >> CX-5 Turbo Signature >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 19 (On-Board Diagnostic - Engine Control System (VIN M) (6 Of 7)) >> DTC P3498-00, P349B-00: No. 1, 4 Cylinder Valve Is Stuck Closed >> Function Inspection Using M-MDS

Function Inspection Using M-MDS

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DIAGNOSTIC PROCEDURE - FUNCTION INSPECTION USING M-MDS

STEP INSPECTION RESULTS ACTION
1 PURPOSE: VERIFY RELATED REPAIR INFORMATION AVAILABILITY
  • Verify related Service Bulletins and/or on-line repair information availability.
  • Is any related repair information available?
 Yes Perform repair or diagnosis according to the available repair information.
  • If the vehicle is not repaired, go to the next step.
No Go to the next step.
2 PURPOSE: IDENTIFY TRIGGER DTC FOR FREEZE FRAME DATA
  • Is the DTC P3498-00: or P349B-00: on FREEZE FRAME DATA?
 Yes Go to the next step.
No Go to the troubleshooting procedure for DTC on FREEZE FRAME DATA.
(See DTC TABLE ).
3 PURPOSE: RECORD FREEZE FRAME DATA/SNAPSHOT DATA AND DIAGNOSTIC MONITORING TEST RESULTS TO UTILIZE WITH REPEATABILITY VERIFICATION
NOTE:
  • Recording can be facilitated using the screen capture function of the PC.
  • Record the FREEZE FRAME DATA/snapshot data and DIAGNOSTIC MONITORING TEST RESULTS (misfire related) on the repair order.
 - Go to the next step.
4 PURPOSE: VERIFY RELATED PENDING CODE AND/OR DTC
  • Switch the ignition off, then ON (engine off).
  • Perform the Pending Trouble Code Access Procedure and DTC Reading Procedure. (See ON-BOARD DIAGNOSTIC TEST ).
  • Are any other PENDING CODEs and/or DTCs present?
 Yes Go to the applicable PENDING CODE or DTC inspection.
(See DTC TABLE ).
No Go to the next step.
5 PURPOSE: VERIFY IF THERE IS PID ITEM CAUSING DRASTIC CHANGES OF ACCELERATION FLUCTUATION BY INPUT SIGNAL TO PCM
  • Start the engine.
  • Access the following PIDs using the M-MDS: (See ON-BOARD DIAGNOSTIC TEST ).
    • APP1
    • APP2
    • ECT
    • IAT
    • MAF
    • MAP
    • MAP_V
    • RPM
    • TP_REL
      • VSS
  • Is there a PID item affected by acceleration fluctuation?
 Yes Inspect the suspected sensor and related wiring harness.
  • If there is any malfunction:
    • Repair or replace the malfunctioning part.
      • Go to Troubleshooting Diagnostic Procedure to perform the procedure from Step 10.
  • If there is no malfunction:
    • Go to the next step.
No Go to the next step.
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