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Home >> Mazda >> 2021 >> CX-9 Signature >> Repair and Diagnosis >> Engine Performance >> System >> On-Board Diagnostic - Engine Control System (4 Of 6) >> DTC P050A-00: Cold Start IAC System 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: 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
 Yes Go to the next step.
No Go to the troubleshooting procedure for DTC on FREEZE FRAME DATA.
(See DTC TABLE [PCM (SKYACTIV-G 2.5T)] .)
3 PURPOSE: RECORD VEHICLE STATUS AT TIME OF DTC DETECTION 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 on the repair order.
 - Go to the next step.
4 PURPOSE: VERIFY RELATED PENDING CODE AND/OR DTC
 Yes Go to the applicable PENDING CODE or DTC inspection.
(See DTC TABLE [PCM (SKYACTIV-G 2.5T)] .)
Go to the next step.
No Go to the next step.
5 PURPOSE: VERIFICATION IF MALFUNCTION CAUSED BY THROTTLE VALVE
  • Switch the ignition ON (engine off).
  • Access the ETC_ACT PID using the M-MDS. (See ON-BOARD DIAGNOSTIC TEST [PCM (SKYACTIV-G 2.5T)] .)
  • While gradually depressing the accelerator pedal, verify that PID monitor ETC_ACT value increases.
  • Does the monitor value change according to the amount the accelerator pedal is depressed?
 Yes Go to Troubleshooting Diagnostic Procedure to perform the procedure from Step 1.
No Go to Troubleshooting Diagnostic Procedure to perform the procedure from Step 2.
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