Mazda CX-9 Grand Touring 2009 Manual page 825

Fig. 6: Identifying PCM Bracket, Connector & Torque Specifications
Courtesy of MAZDA MOTORS CORP.
PCM INSPECTION [MZI-3.7]
CAUTION:
PCM INSPECTION PREPARATION
1. Disconnect the negative battery cable.
2. Remove the battery and battery tray. (See BATTERY REMOVAL/INSTALLATION [MZI-3.7] .)
3. Remove the windshield wiper arm and blade. (See WINDSHIELD WIPER ARM AND BLADE
REMOVAL/INSTALLATION .)
4. Remove the cowl grille. (See COWL GRILLE REMOVAL/INSTALLATION .)
5. Remove the windshield wiper motor. (See WINDSHIELD WASHER MOTOR
REMOVAL/INSTALLATION .)
6. Remove the cowl panel. (See COWL PANEL REMOVAL/INSTALLATION .)
7. Remove the PCM connector still connected.
8. Install the battery and battery tray. (See BATTERY REMOVAL/INSTALLATION [MZI-3.7] .)
9. Connect the negative battery cable.
TYPICAL DIAGNOSTIC REFERENCE VALUES
2008 Mazda CX-9 Grand Touring
2008 ENGINE Control System (MZI-3.7) - Mazda CX-9
The PCM terminal voltage can vary with the conditions when
measuring and changes due to aged deterioration on the vehicle,
causing false diagnosis. Therefore determine comprehensively where
the malfunction occurs among the input systems, output systems,
and the PCM.