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Home >> Mazda >> 2020 >> CX-30 Base, AWD >> Repair and Diagnosis >> Engine Performance >> System >> On-Board Diagnostic - Engine Control System (1 Of 4) >> DTC P0100-00: Mass Air Flow Sensor Circuit Performance Problem >> Function Inspection Using M-MDS
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Function Inspection Using M-MDS

DIAGNOSTIC PROCEDURE - FUNCTION INSPECTION USING M-MDS

Step Inspection Results Action
1 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 (US) .)
2 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.
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 DTCs
  • Perform the DTC inspection for the PCM. (See DTC INSPECTION .)
  • Are any other DTCs displayed?
 Yes Repair the malfunctioning location according to the applicable DTC troubleshooting.
(See DTC TABLE (US) .)
No Go to the next step.
5 PURPOSE: VERIFY MAF SENSOR/IAT SENSOR No. 1 INPUT SIGNAL
  • Start the engine and idle it.
  • Access the following PIDs using the M-MDS: (See PID/DATA MONITOR INSPECTION .)
    • MAF
      • IAT
  • Is the PID value within specification?
 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 part.

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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