Mazda CX-9 Grand Touring 2009 Manual page 1110

2008 ENGINE PERFORMANCE On-Board Diagnostic (MZI-3.7) - Mazda CX-9
POSSIBLE
CAUSE
DIAGNOSTIC PROCEDURE
DTC P050E (MZI-3.7) DIAGNOSTIC PROCEDURE
STEP
VERIFY FREEZE FRAME DATA HAS
BEEN RECORDED
1
Has FREEZE FRAME DATA been
recorded?
VERIFY RELATED REPAIR
INFORMATION AVAILABILITY
Verify related Service Bulletins and/or
2
on-line repair information availability.
Is any related Service Bulletins
available?
VERIFY RELATED PENDING CODE
OR STORED DTCs
Turn the ignition switch off then to the
3
ON position (Engine off).
Verify related pending code or stored
DTCs.
Is other DTCs present?
INSPECT AIR CLEANER ELEMENT
Remove air cleaner element with the
4
engine running.
Is the engine speed increased?
INSPECT INTAKE AIR SYSTEM FOR
EXCESSIVE AIR SUCTION
5
Visually inspect the hose in intake air
system for looseness or damages.
Is there any malfunction?
INSPECT THROTTLE BODY
PASSAGE
2008 Mazda CX-9 Grand Touring
Exhaust restriction
Mechanical concern with the engine
Throttle body malfunction
Vacuum leakage
PCM malfunction
INSPECTION ACTION
Yes Go to the next step.
Record FREEZE FRAME DATA on the repair
No
order, then go to the next step.
Perform repair or diagnosis according to the
available Service Bulletins.
Yes
If the vehicle is not repaired, go to the
next step.
No Go to the next step.
Go to the appropriate DTC troubleshooting. (See
Yes
DTC TABLE [MZI-3.7].)
No Go to the next step.
Replace the air cleaner element, then go to Step
Yes
9.
No Go to the next step.
Repair or replace the malfunctioning part, then
Yes
go to Step 9.
No Go to the next step.
Clean or replace the throttle body passage, then
Yes
go to Step 9.