Throttle Position (TP) Sensor Inspection: Notes

CAUTION:

This inspection procedure cannot be completed correctly if the accelerator pedal position sensor has a malfunction. Before performing this procedure, verify that any one of the DTCs (P2122, P2123, P2127, P2128, P2138) related to the accelerator pedal position sensor is not detected.

NOTE:

Before performing the following inspection, make sure to follow the troubleshooting flowchart. (See FOREWORD ).

Verify that no DTC related to APP sensor has been detected.
- If any DTCs related to APP sensor have been detected, perform the DTC inspection. (See DTC TABLE ).
Connect the M-MDS or equivalent to the DLC-2.
Turn the ignition switch to ON position.
Select TP1 or TP2 PID (percentage) on the M-MDS or equivalent.
Verify that the TP1 or TP2 PID is within the specification when the accelerator pedal not depressed. (See PCM INSPECTION ).

Fig 1: Locating DLC-2 Connector
Courtesy of MAZDA MOTORS CORP.
Operate the accelerator pedal and verify that the TP1 or TP2 PID (percentage) changes as shown in the following graph.
- If not verified, perform the "Circuit Open/Short Inspection".
  - If there is no open or short circuit, replace the throttle body. (See INTAKE AIR SYSTEM REMOVAL/INSTALLATION ).
    
    Fig 2: TP1 Or TP2 PID Output Voltage Chart
    Courtesy of MAZDA MOTORS CORP.