Mazda CX-9 Grand Touring 2007 Manual page 857

2007 ENGINE PERFORMANCE Symptom Troubleshooting (MZI-3.5) - CX-9
DIAGNOSTIC PROCEDURE
DIAGNOSTIC PROCEDURE
STEP INSPECTION
1 Warm up the engine.
Idle the engine for 5 min.
Is the symptom disappeared?
2 Verify the following:
External fuel shut off or
accessory (such as kill switch,
alarm)
Fuel quality (such as proper
octane, contamination,
winter/summer blend)
No air leakage from intake-air
system
Proper sealing of intake
manifold and components
attached to intake manifold
Ignition wiring
Electrical connections
Fuses
Smooth operation of throttle
valve
PCM GND circuit (1D, 1J, 1BP,
1BK).
Are all items normal?
3 Connect the M-MDS to the DLC-2.
Turn the ignition switch to the ON
2007 Mazda CX-9 Grand Touring
(see AFTER REPAIR PROCEDURE [MZI-3.5] .)
CAUTION:
Disconnecting/connecting quick release connector without
cleaning it may cause damage to fuel pipe and quick release
connector. Always clean quick release connector joint area before
disconnecting/connecting, and make sure that it is free of foreign
material.
RESULTS ACTION
Yes Troubleshooting completed. (Cause of
this symptom is that the idle learning of
electronic throttle control system is not
completed.)
No Go to the next step.
Yes Go to the next step.
No Service if necessary.
Repeat Step 2.
Yes DTC is displayed:
Go to the appropriate DTC inspection.