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Home >> Mazda >> 2024 >> CX-90 Turbo Select >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 2 (On-Board Diagnostic - Pcm (VIN A) (1 Of 4)) >> DTC P013A-00: Ho2S System: Slow Response (During Transition From Rich To Lean) (PYUL) >> Troubleshooting Diagnostic Procedure >> Intention of troubleshooting procedure

Intention of troubleshooting procedure

WARNING: This page is about a different variant/trim than selected.
P013A-00 (PCM (PYUL)) DIAGNOSTIC PROCEDURE

Step Inspection Results Action
1 PURPOSE: VERIFY PURGE SOLENOID VALVE FOR MALFUNCTION  Yes Go to the next step.
No Repair or replace the malfunctioning location and perform the repair completion verification 1.
(Refer to [PURGE SOLENOID VALVE REMOVAL/INSTALLATION ] in Service Information).
2 PURPOSE: VERIFY IF DIAGNOSTIC RESULT IS AFFECTED BY MALFUNCTION RELATED TO POOR EVAPORATIVE HOSE CONNECTION 
  • Verify the connection condition of the evaporative hose (purge solenoid valve side). (Refer to [PURGE SOLENOID VALVE REMOVAL/INSTALLATION ] in Service Information).
  • Is the evaporative hose (purge solenoid valve side) connection normal?
Yes Go to the next step.
No Connect evaporative hose correctly and perform the repair completion verification 1. (Refer to [PURGE SOLENOID VALVE REMOVAL/INSTALLATION ] in Service Information).
3 PURPOSE: VERIFY IF MALFUNCTION RELATED TO ENGINE COMPRESSION AFFECTS DIAGNOSTIC RESULTS 
  • Inspect the engine compression. (Refer to [COMPRESSION INSPECTION ] in Service Information).
  • Is the engine compression pressure normal?
Yes Go to the next step.
No Replace or overhaul the engine and perform the repair completion verification 1.
4 PURPOSE: VERIFY HO2S HEATER CONNECTOR FOR MALFUNCTION 
  • Inspect the applicable connector and terminal. (See CONNECTOR INSPECTION )
  • Are the connector and terminal normal?
Yes Go to the next step.
No Repair or replace the malfunctioning location and perform the repair completion verification 1.
5 PURPOSE: VERIFY HO2S IS INSTALLED POORLY  Yes Go to the next step.
No Correctly install the HO2S and perform the repair completion verification 1.
(Refer to [HEATED OXYGEN SENSOR (HO2S) REMOVAL/INSTALLATION ] in Service Information).
6 PURPOSE: VERIFY HO2S FOR MALFUNCTION  Yes Go to the next step.
No Repair or replace the malfunctioning location and perform the repair completion verification 1.
(Refer to [HEATED OXYGEN SENSOR (HO2S) REMOVAL/INSTALLATION ] in Service Information).
7 PURPOSE: VERIFY HO2S HEATER FOR MALFUNCTION  Yes Go to the next step.
No Repair or replace the malfunctioning location and perform the repair completion verification 1.
(Refer to [HEATED OXYGEN SENSOR (HO2S) REMOVAL/INSTALLATION ] in Service Information).
8 PURPOSE: INSPECT FOR EXHAUST GAS LEAKAGE FROM EXHAUST SYSTEM 
  • Visually inspect for exhaust gas leakage from exhaust system.
  • Is there any malfunction?
Yes Repair or replace the malfunctioning location and perform the repair completion verification 1.
No Go to the next step.
9 PURPOSE: VERIFY IF CATALYTIC CONVERTER DAMAGE AFFECTS HO2S SIGNAL 
  • Verify if the catalytic converter is damaged.
  • Is there any malfunction?
Yes Repair or replace the malfunctioning location and perform the repair completion verification 1.
No Replace the HO2S and perform the repair completion verification 1.
(Refer to [HEATED OXYGEN SENSOR (HO2S) REMOVAL/INSTALLATION ] in Service Information).
Repair completion verification 1 PURPOSE: VERIFY THAT VEHICLE IS REPAIRED 
  • Install/connect the part removed/disconnected during the troubleshooting procedure.
  • Clear the DTC recorded in the memory. (See CLEARING DTC )
  • Replicate the vehicle conditions at the time the DTC was detected using the following procedure.
  • Perform the DTC inspection for the PCM. (See DTC INSPECTION )
  • Is the same Pending DTC present?
Yes Refer to the controller area network (CAN) malfunction diagnosis flow to inspect for a CAN communication error.
(See MALFUNCTION DIAGNOSIS FLOW [CONTROLLER AREA NETWORK (CAN)] )
If the CAN communication is normal, perform the diagnosis from Step 1.
  • If the malfunction recurs, replace the PCM, then go to the next step. (Refer to [PCM REMOVAL/INSTALLATION ] in Service Information).
No Go to the next step.
Repair completion verification 2 PURPOSE: VERIFY IF OTHER DTCs DISPLAYED 
  • Perform the DTC inspection. (See DTC INSPECTION )
  • Are any other DTCs displayed?
Yes Repair or replace the malfunctioning location according to the applicable DTC troubleshooting.
No DTC troubleshooting completed.