Mazda CX-9 Grand Touring 2009 Manual page 1340

POSSIBLE
CAUSE
DIAGNOSTIC PROCEDURE
NO.10 LOW IDLE/STALLS DURING DECELERATION (MZI-3.7) DIAGNOSTIC PROCEDURE
STEP INSPECTION
1 Does the engine idle roughly?
Turn off the A/C switch and fan switch.
2
Does the A/C magnetic clutch engage?
Verify the following:
Proper routing of and no damage
to vacuum lines
3
No air leakage from intake-air
system
Are all items normal?
Connect the M-MDS to the DLC-2.
Turn the ignition switch to the ON
4 position (Engine off).
Retrieve any DTCs.
Are there any DTCs displayed?
Perform the electronic throttle control
system operation inspection.
(See ENGINE CONTROL SYSTEM
2008 Mazda CX-9 Grand Touring
2008 ENGINE Symptom Troubleshooting (MZI-3.7) - Mazda CX-9
Improper air/fuel mixture ratio control
Evaporative emission control system malfunction
Accelerator pedal position sensor or related circuit malfunction
Accelerator pedal position sensor misadjustment
TP sensor or related circuit malfunction
MAF sensor or related circuit malfunction
Brake switch or related circuit malfunction
TR switch or related circuit malfunction
Improper A/C magnetic clutch operation
RESULTS
No
No
No
No
Go to symptom troubleshooting "No.8
Engine runs rough/rolling idle".
Yes
(See NO.8 ENGINE RUNS
ROUGH/ROLLING IDLE [MZI-3.7].)
Go to the next step.
Go to symptom troubleshooting "No.24 A/C
is always on or A/C compressor runs
continuously."
Yes
(See NO.24 A/C IS ALWAYS ON OR A/C
COMPRESSOR RUNS
CONTINUOUSLY [MZI-3.7].)
Go to the next step.
Yes Go to the next step.
Service if necessary.
Repeat Step 3.
DTC is displayed:
Yes Go to the appropriate DTC inspection.
(See DTC TABLE [MZI-3.7] .)
No DTC is displayed:
Go to the next step.
Yes Go to the next step.
ACTION