Mazda CX-9 Grand Touring 2007 Manual page 510

2007 ENGINE PERFORMANCE On-Board Diagnostic (MZI-3.5) - CX-9
12 INSPECT FUEL LINE FROM FUEL
PUMP TO FUEL DELIVERY PIPE
Visually inspect the fuel line for
any leakage.
Is any fuel leakage found?
13 INSPECT ENGINE
COMPRESSION
Inspect the engine compression.
(see COMPRESSION
INSPECTION [MZI-3.5] .)
Is it normal?
14 INSPECT VARIABLE VALVE
TIMING CONTROL SYSTEM
OPERATION
Inspect the variable valve timing
control system operation.
(see ENGINE CONTROL
SYSTEM OPERATION
INSPECTION [MZI-3.5] .)
Does the variable timing control
2007 Mazda CX-9 Grand Touring
No
Yes
No
Yes
No
Yes
No
INSPECTION [MZI-3.5] .)
Then go to Step 18.
Go to Step 18.
Replace suspected fuel line, then go to Step
18.
Inspect the low-pressure side fuel filter for
the following:
Foreign material or staining inside the
fuel filter Perform the following
actions as a result:
If foreign material or staining is found
inside the fuel filter (low-pressure
side), clean the fuel tank and filter.
If normal, replace the fuel pump unit.
(see FUEL PUMP UNIT
REMOVAL/INSTALLATION
[MZI-3.5] .)
Then, go to Step 18.
Go to the next step.
Perform an engine overhaul for repairs, then
go to Step 18.
Go to the next step.
Repair or replace the malfunctioning part
according to the variable valve timing
control system inspection results, then go to
Step 18.