DIAGNOSTIC PROCEDURE
DIAGNOSTIC PROCEDURE
z
Improper tension of drive belt
z
Drive belt damage
STEP INSPECTION
RESULTS ACTION
1
Inspect the following:
z
Engine coolant level
z
Coolant leakage
z
Water and anti-freeze mixture
z
Radiator condition
z
Collapsed or restricted radiator
hoses
z
Radiator pressure cap
z
Overflow system
z
Fan rotational direction
z
Fuses
Are all items normal?
Yes
Go to the next step.
No
Service if necessary.
Repeat Step 1.
2
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.
3
Start the engine and idle it.
Turn the A/C switch on and set blower fan
to any speed.
Does the A/C compressor engage?
Yes
Go to Step 5.
No
Inspect for the following and repair
or replace if necessary:
z
Refrigerant charging amount
z
Open circuit in wiring harness
between A/C relay and PCM
terminal 1N
z
Seized A/C magnetic clutch
z
A/C magnetic clutch
malfunction
If all items are normal, go to the next
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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