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 P2127 >> 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 P2127 DIAGNOSTIC PROCEDURE

STEP INSPECTION ACTION
1 VERIFY FREEZE FRAME DATA HAS BEEN RECORDED 
  • Has FREEZE FRAME DATA been recorded?
 Yes Go to the next step.
No Record the FREEZE FRAME DATA on the repair order, then go to the next step.
2 VERIFY RELATED REPAIR INFORMATION AVAILABILITY 
  • Verify related Technical Service Bulletin(s) 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.
3 INSPECT APP SENSOR CONNECTOR FOR POOR CONNECTION 
  • Turn the ignition switch off.
  • Disconnect the APP sensor connector.
  • Inspect for poor connection (such as damaged/pulled-out pins, corrosion).
  • Is there any malfunction?
 Yes Repair or replace the terminal, then go to Step 7.
No Go to the next step.
4 INSPECT APP SENSOR NO.2 CIRCUIT FOR SHORT TO GND 
  • Turn the ignition switch off.
  • Inspect for continuity between the following circuits:
    • APP sensor terminal E (wiring harness-side) and body GND
  • Is there continuity?
 Yes Repair or replace the wiring harness for a possible short to GND, then go to Step 7.
No Go to the next step.
5 INSPECT APP SENSOR NO.2  Yes Replace the APP sensor, then go to Step 7.
(See ACCELERATOR PEDAL REMOVAL/INSTALLATION .)
No Go to the next step.
6 INSPECT PCM CONNECTOR FOR POOR CONNECTION 
  • Turn the ignition switch off.
  • Disconnect the PCM connector.
  • Inspect for poor connection (such as damaged/pulled-out pins, corrosion).
  • Is there any malfunction?
 Yes Repair or replace the terminal, then go to the next step.
No Go to the next step.
7 VERIFY TROUBLESHOOTING OF DTC P2127 COMPLETED 
  • Make sure to reconnect all disconnected connectors.
  • Clear the DTC from the PCM memory using the WDS or equivalent.
  • Start the engine.
  • Is the same DTC present?
 Yes Replace the PCM, then go to the next step.
(See PCM REMOVAL/INSTALLATION .)
No Go to the next step.
8 VERIFY AFTER REPAIR PROCEDURE  Yes Go to the applicable DTC inspection.
(See DTC TABLE )
No DTC troubleshooting completed.
scientia non olet · About LEMON Manuals