DIAGNOSTIC PROCEDURE
DIAGNOSTIC PROCEDURE
POSSIBLE CAUSE
z
Accelerator pedal position sensor or related circuit malfunction
z
Accelerator pedal position sensor misadjustment
z
TP sensor or related circuit malfunction
z
MAF sensor or related circuit malfunction
z
Brake switch or related circuit malfunction
z
TR switch or related circuit malfunction
z
Improper A/C magnetic clutch operation
STEP INSPECTION
RESULTS ACTION
1
Does the engine idle roughly?
Yes
Go to symptom troubleshooting "No.8
Engine runs rough/rolling idle".
(See
NO.8 ENGINE RUNS
ROUGH/ROLLING IDLE [MZI-
3.5]
.)
No
Go to the next step.
2
Turn off the A/C switch and fan switch.
Does the A/C magnetic clutch engage?
Yes
Go to symptom troubleshooting
"No.24 A/C is always on or A/C
compressor runs continuously."
(See
NO.24 A/C IS ALWAYS ON
OR A/C COMPRESSOR RUNS
CONTINUOUSLY [MZI-3.5]
.)
No
Go to the next step.
3
Verify the following:
z
Proper routing of and no damage
to vacuum lines
z
No air leakage from intake-air
system
Are all items normal?
Yes
Go to the next step.
No
Service if necessary.
Repeat Step 3.
4
Connect the M-MDS to the DLC-2.
Turn the ignition switch to the ON
position (Engine off).
Retrieve any DTCs.
Are there any DTCs displayed?
Yes
DTC is displayed:
Go to the appropriate DTC inspection.
(see
DTC TABLE [MZI-3.5]
.)
No
No DTC is displayed:
Go to the next step.
5
Perform the electronic throttle control
system operation inspection.
(See
ENGINE CONTROL SYSTEM
OPERATION INSPECTION [MZI-
Yes
Go to the next step.
No
Repair or replace the malfunctioning
part according to electronic throttle
control system operation inspection
2007 Mazda CX-9 Grand Touring
2007 ENGINE PERFORMANCE Symptom Troubleshooting (MZI-3.5) - CX-9
Microsoft
Sunday, November 15, 2009 9:27:37 AM
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