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Home › Mazda › 2024 › MX-5 Miata Club › Repair and Diagnosis › Engine Performance › System › On-Board Diagnostic - Engine Control (1 Of 3) › DTC P0100-00: Mass Air Flow Sensor Circuit Performance Problem › Function Inspection Using M-MDS

Function Inspection Using M-MDS

P0100-00: (PCM (SKYACTIV-G)) DIAGNOSTIC PROCEDURE

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: IDENTIFY TRIGGER DTC FOR FREEZE FRAME DATA 
  • Is the DTC P0100-00: 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 [PCM (SKYACTIV-G)] .)
3 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.
4 PURPOSE: INSPECT FOR OTHER RELATED DTC 
  • Perform the DTC inspection for the PCM.

    (See DTC INSPECTION .)

  • Are any other DTCs displayed?
 Yes Repair or replace the malfunctioning location according to the applicable DTC troubleshooting.
(See DTC TABLE [PCM (SKYACTIV-G)] .)
No Go to the next step.
5 PURPOSE: VERIFY MAF SENSOR/IAT SENSOR No. 1 INPUT SIGNAL 
  • Switch the ignition ON (engine off).
  • Access the following PIDs using the M-MDS: (See PID/DATA MONITOR INSPECTION .)
    • MAF
    • IAT
  • Is the monitor value normal?
 Yes Go to the next step.
No Go to Troubleshooting Diagnostic Procedure to perform the procedure from Step 1.
6 PURPOSE: VERIFY CONNECTOR CONNECTIONS 
  • Access the following PIDs using the M-MDS: (See PID/DATA MONITOR INSPECTION .)
    • MAF
    • IAT
  • Does the PID value fluctuate when the following connectors are shaken?
    • MAF sensor/IAT sensor No. 1
    • PCM
 Yes Inspect the related wiring harness and connector.
  • Repair or replace the malfunctioning location.

Go to Troubleshooting Diagnostic Procedure to perform the repair completion verification 1.
No Go to Troubleshooting Diagnostic Procedure to perform the procedure from Step 1.
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