Mike's Workshop Manuals: Service manuals for every vehicle
Home >> Mazda >> 2014 >> 3 SV, Automatic Trans >> Repair and Diagnosis >> Engine Performance >> System >> On-Board Diagnostic - Engine Controls (5 Of 6) >> DTC P2128 00: App Sensor No. 2 Circuit High Input >> Diagnostic Procedure

Diagnostic Procedure

DTC P2128:00 (SKYACTIV-G 2.0, SKYACTIV-G 2.5) - DIAGNOSTIC PROCEDURE

STEP INSPECTION ACTION
1 VERIFY FREEZE FRAME DATA (MODE 2)/SNAPSHOT DATA HAS BEEN RECORDED 
  • Has the FREEZE FRAME DATA (Mode 2)/snapshot data been recorded?
 Yes Go to the next step.
No Record the FREEZE FRAME DATA (Mode 2)/snapshot data on the repair order, then go to the next step.
2 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.
3 DETERMINE IF APP SENSOR NO. 2 OR WIRING HARNESS MALFUNCTION 
 Yes Go to Step 7.
No Go to the next step.
4 INSPECT APP SENSOR CONNECTOR CONDITION 
  • Switch the ignition 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 connector and/or terminals, then go to Step 9.
No Go to the next step.
5 INSPECT PCM CONNECTOR CONDITION 
  • Disconnect the PCM connector.
  • Inspect for poor connection (such as damaged/pulled-out pins, corrosion).
  • Is there any malfunction?
 Yes Repair or replace the connector and/or terminals, then go to Step 9.
No Go to the next step.
6 INSPECT APP SENSOR NO. 2 
 Yes Replace the accelerator pedal, then go to Step 9.
(See ACCELERATOR PEDAL REMOVAL/INSTALLATION [SKYACTIV-G 2.0, SKYACTIV-G 2.5] .)
No Go to Step 9.
7 INSPECT APP SENSOR NO. 2 SIGNAL CIRCUIT FOR SHORT TO POWER SUPPLY 
 Yes Refer to the wiring diagram and verify whether or not there is a common connector between APP sensor terminal E and PCM terminal 2AS.
If there is a common connector: 
  • Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for a short to power supply.
  • Repair or replace the malfunctioning part.

If there is no common connector: 
  • Repair or replace the wiring harness which has a short to power supply.

Go to Step 9.
No Go to the next step.
8 INSPECT APP SENSOR NO. 2 GROUND CIRCUIT FOR OPEN CIRCUIT 
  • Verify that the APP sensor connector is disconnected.
  • Switch the ignition off.
  • Disconnect the PCM connector.
  • Inspect for continuity between APP sensor terminal D (wiring harness-side) and PCM terminal 2AT (wiring harness-side).
  • Is there continuity?
 Yes Replace the accelerator pedal, then go to the next step.
(See ACCELERATOR PEDAL REMOVAL/INSTALLATION [SKYACTIV-G 2.0, SKYACTIV-G 2.5] .)
No Refer to the wiring diagram and verify whether or not there is a common connector between APP sensor terminal D and PCM terminal 2AT.
If there is a common connector: 
  • Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for an open circuit.
  • Repair or replace the malfunctioning part.

If there Is no common connector: 
  • Repair or replace the wiring harness which has an open circuit.

Go to the next step.
9 VERIFY DTC TROUBLESHOOTING COMPLETED 
 Yes Repeat the inspection from Step 1.

Go to the next step.
No Go to the next step.
10 VERIFY AFTER REPAIR PROCEDURE 
 Yes Go to the applicable DTC inspection.
(See DTC TABLE [SKYACTIV-G 2.0, SKYACTIV-G 2.5] .)
No DTC troubleshooting completed.
scientia non olet · About Mike's Workshop Manuals