Mazda CX-9 Grand Touring 2009 Manual page 1324

NO.6 CRANKS NORMALLY BUT WILL NOT START [MZI-3.7]
NO.6 CRANKS NORMALLY BUT WILL NOT START (MZI-3.7) DETECTION CONDITIONS AND
POSSIBLE CAUSES
6 CRANKS NORMALLY BUT WILL NOT START
DESCRIPTION
POSSIBLE
CAUSE
2008 Mazda CX-9 Grand Touring
2008 ENGINE Symptom Troubleshooting (MZI-3.7) - Mazda CX-9
The starter cranks engine at normal speed but the engine will not run.
Refer to symptom troubleshooting "NO.5 ENGINE STALLS" if this symptom
appears after engine stall.
Fuel is in tank.
Battery is in normal condition.
No battery power supply to PCM
Air leakage from intake-air system
Open PCM GND or vehicle body GND
Improper operation of electronic throttle control system
No signal from CKP sensor due to sensor, related wire or incorrect installation
No signal from CMP sensor due to sensor, related wire or incorrect installation
Low engine compression
Engine overheating
Vacuum leakage
Erratic signal to ignition coil
Improper air/fuel mixture ratio control
Poor fuel quality
PCV valve malfunction
Restriction in intake-air system
Restriction in exhaust system
Disconnected electrical connector
Open or short circuit in fuel pump body and related wiring harness
Inadequate fuel pressure
Fuel pump mechanical malfunction
Fuel leakage from injector
Fuel injector is clogged.
Purge solenoid valve malfunction
Spark plug malfunction
Ignition coil malfunction
Improper variable valve timing control system operation
Improper valve timing
Immobilizer system and/or circuit malfunction
Immobilizer system operating properly. (Ignition key is not registered.)