LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Mazda >> 2005 >> 3 SP23, 4D Hatchback, Standard >> Repair and Diagnosis >> Engine Performance >> System >> On-Board Diagnostic [Engine Control System] >> DTC P0101 >> Diagnostic procedure
October 30: LEMON manuals on a temporary server, it is slow and having issues, download the manuals you need! Later in November we will switch back to the fast server.

Diagnostic procedure

DTC P0101 DIAGNOSTIC PROCEDURE

STEP INSPECTION ACTION
1 VERIFY FREEZE FRAME DATA HAS BEEN RECORDED 
  • Has FREEZE FRAME DATA been recorded?
Yes Go to next step.
No Record FREEZE FRAME DATA on repair order, then go to next step.
2 VERIFY RELATED REPAIR INFORMATION AVAILABILITY 
  • Check for related Technical Service Bulletin(s) repair information availability.
  • Is any related repair information available?
Yes Perform repair or diagnosis according to available repair information.
  • If vehicle is not repaired, go to next step.
No Go to next step.
3 VERIFY CURRENT INPUT SIGNAL STATUS IS CONCERN INTERMITTENT OR CONSTANT 
  • Connect WDS or equivalent to DLC-2.
  • Start the engine.
  • Access ECT, MAF, TP and RPM PIDs using WDS or equivalent.
  • Warm-up engine until ECT PID is above 70°C {158°F}. 
  • Idle engine for 5 s or more. 
    CAUTION:
    • While driving, always operate the vehicle in a safe and lawful manner.
  • Drive the vehicle under the following two conditions:

    Condition 1 

    • TP PID: 50-87.5% 
    • RPM PID: above 1,000 rpm 
    • 4th gear (MTX), D range (ATX)

    Condition 2 

    • TP PID: above 80% 
    • RPM PID: below 2,000 rpm 
    • Gear in
  • Is PENDING CODE for this DTC present?
Yes Go to next step.
No Intermittent concern exists. Go to INTERMITTENT CONCERNS TROUBLESHOOTING procedure. (See INTERMITTENT CONCERN TROUBLESHOOTING )
4 CHECK MAF SENSOR TERMINALS FOR ELECTRICAL CORROSION 
  • Turn ignition switch to OFF.
  • Disconnect MAF sensor connector.
  • Check for poor connection (damaged, pulled-out terminals, corrosion, etc.).
  • Is any problem corrosion found?
Yes Repair or replace suspected terminal or MAF sensor, then go to Step 6.
No Go to next step.
5 INSPECT PCM CONNECTOR FOR POOR CONNECTION 
  • Disconnect PCM connector.
  • Check for poor connection (damaged, pulled-out pins, corrosion, etc.).
  • Is there any malfunction?
Yes Repair terminal, then go to next step.
No Go to next step.
6 VERIFY TROUBLESHOOTING OF DTC P0101 COMPLETED 
  • Make sure to connect all disconnected connectors.
  • Turn ignition switch to ON (Engine OFF).
  • Clear DTC from PCM memory using WDS or equivalent.
  • Start the engine.
  • Warm-up engine until ECT PID is above 70°C {158°F}. 
  • Idle engine for 5 s or more. 
    CAUTION:
    • While performing the Drive Mode, always operate the vehicle in a safe and lawful manner.
  • Drive the vehicle under the following two conditions:

    Condition 1 

    • TP PID: 50-87.5% 
    • RPM PID: above 1,000 rpm 
    • 4th gear (MTX), D range (ATX)

    Condition 2 

    • TP PID: above 80% 
    • RPM PID: below 2,000 rpm 
    • Gear in
  • Is PENDING CODE for this DTC present?
Yes Replace PCM, then go to next step.
No Go to next step.
7 VERIFY AFTER REPAIR PROCEDURE  Yes Go to applicable DTC inspection. (See DTC TABLE )
No Troubleshooting completed.