Mazda CX-9 Grand Touring 2009 Manual page 840

Open circuit
If there is no continuity, there is an open circuit. Repair or replace the wiring harness.
APP sensor terminal B and PCM terminal 1 AC
APP sensor terminal C and PCM terminal 1AH
APP sensor terminal D and PCM terminal 1Y
APP sensor terminal E and PCM terminal 1AK
APP sensor terminal F and PCM terminal 1BA
APP sensor terminal G and PCM terminal 1AD
Short circuit
If there is continuity, there is a short circuit. Repair or replace the wiring harness.
APP sensor terminal B and body ground
APP sensor terminal B and power supply
APP sensor terminal C and power supply
APP sensor terminal D and body ground
APP sensor terminal E and body ground
APP sensor terminal E and power supply
APP sensor terminal F and body ground
APP sensor terminal G and power supply
CRANKSHAFT POSITION (CKP) SENSOR REMOVAL/INSTALLATION [MZI-
3.7]
NOTE:
Disconnect the connector after the CKP sensor is removed to prevent the
CKP sensor from falling off.
The bolt and sensor are integrated and cannot be pulled out.
When removing the CKP sensor, be careful not to drop the tool.
The bolt and sensor must be pulled in different directions. Pull them as
indicated in the figure.
Fig. 20: Identifying CKP Sensor
2008 Mazda CX-9 Grand Touring
2008 ENGINE Control System (MZI-3.7) - Mazda CX-9