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Home >> Mazda >> 2024 >> CX-90 Turbo Select >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> On-Board Diagnostic - Pcm (VIN C & VIN D) (4 Of 5) >> DTC P2097-00: Ho2S Fuel Injection Control System: Air Fuel Too Rich >> Function Inspection Using M-MDS

Function Inspection Using M-MDS

P2097: 00 (PCM (H3T)) 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 P2097: 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 (H3T)] .)
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: VERIFICATION IF MALFUNCTION CAUSED BY LACK OF FUEL 
 Yes Refill the fuel.
Go to Troubleshooting Diagnostic Procedure to perform the repair completion verification 1.
No Go to the next step.
5 PURPOSE: VERIFY DTCs FOR FUEL PRESSURE SENSOR 
  • Perform the DTC inspection for the PCM. (See DTC INSPECTION .)
  • Are any of the following DTCs displayed?
    • P0088: 00
    • P0192: 00
    • P0193: 00
 Yes Repair or replace the malfunctioning location according to the applicable DTC troubleshooting.
(See P0088-00: (H3T) .)
(See P0192-00: (H3T) .)
(See P0193-00: (H3T) .)
Go to the next step.
No Go to the next step.
6 PURPOSE: VERIFY DTCs FOR ELECTRIC VARIABLE VALVE TIMING CONTROL SYSTEM AND HYDRAULIC VARIABLE VALVE TIMING 
  • Perform the DTC inspection for the PCM. (See DTC INSPECTION .)
  • Are any of the following DTCs displayed?
    • P0010: 00
    • P0011: 00
    • P0012: 00
    • P0014: 00
    • P0015: 00
    • P1380: 00
    • P2090: 00
    • P2091: 00
 Yes Repair or replace the malfunctioning location according to the applicable DTC troubleshooting.
(See P0010-00: (H3T) .)
(See P0011-00: (H3T) .)
(See P0012-00: (H3T) .)
(See P0014-00: (H3T) .)
(See P0015-00: (H3T) .)
(See P1380-00: (H3T) ).
(See P2090-00: (H3T) ).
(See P2091-00: (H3T) ).
Go to the next step.
No Go to the next step.
7 PURPOSE: VERIFY DTCs FOR MISFIRE 
  • Perform the DTC inspection for the PCM. (See DTC INSPECTION .)
  • Are any of the following DTCs displayed?
    • P0300: 00
    • P0301: 00
    • P0302: 00
    • P0303: 00
    • P0304: 00
 Yes Repair or replace the malfunctioning location according to the applicable DTC troubleshooting.
(See P0300-00: (H3T) .)
(See P0301-00: (H3T) .)
(See P0302-00: (H3T) .)
(See P0303-00: (H3T) .)
(See P0304-00: (H3T) .)
Go to the next step.
No Go to the next step.
8 PURPOSE: VERIFY A/F SENSOR AND HO2S INPUT SIGNAL 
  • Start the engine and warm it up completely.
    NOTE:
    • After switching to sport mode, the engine can be started by shifting the shift position from the P to the D position or from the D to the P position while the vehicle is stopped.
  • Access the following PIDs using the M-MDS:

    (See PID/DATA MONITOR INSPECTION .)

    • A/F_SEN_CUR
    • HO2S_OUT_VOLT
    • Drive the vehicle under the following conditions.
    WARNING:
    • To prevent an accident, work with another person when the vehicle is being driven (one person drives vehicle, other person operates M-MDS).
    • Observe legal speed limits when driving the vehicle and perform the procedure in a location where safety can be assured.
    • After increasing the engine speed to 3, 000 rpm, decelerate using engine braking.
  • Is the displayed PID value as follows?
    • A/F_SEN_CUR: 0.25 mA or more
    • HO2S_OUT_VOLT: 0.3 V or less
 Yes Go to Step 10.
No Go to the next step.
9 PURPOSE: INSPECT RELATED SENSOR WIRING HARNESS AND CONNECTOR 
  • Access the following PIDs using the M-MDS: (See PID/DATA MONITOR INSPECTION .)
    • A/F_SEN_CUR
    • HO2S_OUT_VOLT
  • When the PCM, A/F sensor and HO2S are shaken, does the PID value include a PID item which has changed?
 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.
10 PURPOSE: VERIFY IF MALFUNCTION CAUSED BY FUEL INJECTOR IMPROPER OPERATION 
  • Start the engine and idle it.
  • Access the following simulation items using the M-MDS: (See SIMULATION INSPECTION .)
    • INJ
  • Using the simulation function, can the change in engine speed be verified when operation of each of the fuel injectors is stopped?
 Yes Go to the next step.
No Go to Troubleshooting Diagnostic Procedure to perform the procedure from Step 3.
11 PURPOSE: VERIFY IF MALFUNCTION CAUSED BY PURGE SOLENOID VALVE IMPROPER OPERATION 
  • Start the engine and idle it.
  • Access the PCM PID [EQUIVALENCE_RATIO_COMD] and PCM simulation item [PRG_DUTY] using the M-MDS.

    (See PID/DATA MONITOR INSPECTION .)

    (See SIMULATION INSPECTION .)

  • Using the simulation function, does the [EQUIVALENCE_RATIO_COMD] PID value change

    when the purge solenoid valve is opened/closed?

 Yes Go to Troubleshooting Diagnostic Procedure to perform the procedure from Step 5.
No Go to Troubleshooting Diagnostic Procedure to perform the procedure from Step 4.
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