Mazda CX-9 Grand Touring 2008, Руководство пользователя

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Is there any leakage at fuel-filler
cap?
No Go to the next step.
6
Inspect the front HO2S.
(See
FRONT HEATED OXYGEN
SENSOR (HO2S) INSPECTION
[MZI-3.7]
.)
Is front HO2S normal?
Yes Go to the next step.
No
Replace the front HO2S.
(See FRONT HEATED OXYGEN SENSOR
(HO2S) REMOVAL/INSTALLATION [MZI-
3.7] .)
7
Perform spark test.
(See ENGINE CONTROL
SYSTEM OPERATION
INSPECTION [MZI-3.7]
.)
Is strong blue spark visible at each
cylinder?
Yes Go to the next step.
No
Repair or replace the malfunctioning part
according to spark test result.
8
Install the fuel pressure gauge
between the fuel pipe and the fuel
distributor.
Start the engine and idle it.
Measure fuel line pressure during
idle.
Is fuel line pressure correct during
idle?
(See FUEL LINE PRESSURE
INSPECTION [MZI-3.7] .)
Yes Go to the next step.
No
Low:
Inspect the fuel line for clogging.
If there is no malfunction, replace the fuel pump
unit.
(See FUEL PUMP UNIT
REMOVAL/INSTALLATION [MZI-3.7] .)
High:
Replace the fuel pump unit.
(See FUEL PUMP UNIT
REMOVAL/INSTALLATION [MZI-3.7] .)
9
Remove and shake the PCV valve.
Does the PCV valve rattle?
Yes Go to the next step.
No Replace the PCV valve.
10
Inspect for fuel saturation inside
charcoal canister.
Is excess amount of liquid fuel
present in canister?
Yes Replace the charcoal canister.
No
Inspect the fuel tank vent system.
Then, go to the next step.
(See FUEL TANK INSPECTION [MZI-3.7] .)
11
visually inspect the exhaust system
part.
Is there any deformed exhaust
system part?
Yes Replace the part.
No Go to the next step.
12
Inspect the three-way catalytic
converter.
(See EXHAUST SYSTEM
INSPECTION [MZI-3.7] .)
Is the three-way catalytic converter
normal?
Yes Go to the next step.
No Replace the three-way catalytic converter.
z
Verify test results.
{
If normal, return to diagnostic index to service any additional symptoms.
(See SYMPTOM DIAGNOSTIC INDEX [MZI-3.7] .)
2008 Mazda CX-9 Grand Touring
2008 ENGINE Symptom Troubleshooting (MZI-3.7) - Mazda CX-9
Microsoft
Sunday, November 15, 2009 10:10:05 AM Page 68 © 2005 Mitchell Repair Information Company, LLC.