Mazda CX-9 Grand Touring 2009 Manual page 836

NOTE:
Before performing the following inspection, make sure to follow the
procedure as indicated in the troubleshooting flowchart. (See HOW TO
USE THIS MANUAL .)
VOLTAGE INSPECTION
1. 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 [MZI-3.7] .)
2. Connect the M-MDS to the DLC-2.
3. Turn the ignition switch to the ON position.
4. Select TP1 or TP2 PID (voltage) on the M-MDS.
Fig. 15: Identifying DLC-2 Connector
Courtesy of MAZDA MOTORS CORP.
5. Operate the accelerator pedal and verify that the TP1 or TP2 PID (voltage) 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 [MZI-3.7] .)
Fig. 16: Throttle Angle & Voltage Graph (Degrees)
2008 Mazda CX-9 Grand Touring
2008 ENGINE Control System (MZI-3.7) - Mazda CX-9