DIAGNOSTIC PROCEDURE
DTC P0068 (MZI-3.5) DIAGNOSTIC PROCEDURE
DETECTION
CONDITION
sensed throttle position to mass air flow readings. If during a KOER self-
test, the comparison of the TP sensor and MAF sensor readings are not
consistent with the calibrated load values, test fails and a DTC is stored in
continuous memory.
POSSIBLE CAUSE
z
Air leak between MAF sensor and throttle body
z
TP sensor or MAF sensor malfunction
z
TP sensor not seated correctly
STEP
INSPECTION
ACTION
1
VERIFY FREEZE FRAME DATA
HAS BEEN RECORDED
z
Has FREEZE FRAME DATA
been recorded?
Yes
Go to next step.
No
Record FREEZE FRAME DATA on the
repair order, then go to next step.
2
VERIFY RELATED REPAIR
INFORMATION AVAILABILITY
z
Verify related Service Bulletins
availability.
z
Is any related Service Bulletins
available?
Yes
Perform repair or diagnosis according to
available Service Bulletins.
z
If vehicle is not repaired, go to next
step.
No
Go to next step.
3
VERIFY RELATED PENDING
CODE OR STORED DTC
z
Verify the related PENDING
CODE or stored DTCs.
z
Are other DTCs present?
Yes
Go to appropriate DTC inspection.
(See
DTC TABLE [MZI-3.5]
.)
No
Go to next step.
4
INSPECT FOR INLET AIR LEAKS
z
Listen for air noise around the
MAF sensor and throttle body
while the engine is running.
z
Is a concern present?
Yes
Repair as necessary. Go to Step 8.
No
Go to next step.
5
INSPECT FOR TP2 SIGNAL HIGH
VERSUS LOAD WHILE DRIVING
THE VEHICLE
z
Turn the ignition switch to the ON
position (Engine running).
z
Access the TP2 and LOAD PIDs
using the M-MDS.
Yes
Replace the malfunctioning part, then go
to Step 8.
No
Go to next step.
2007 Mazda CX-9 Grand Touring
2007 ENGINE PERFORMANCE On-Board Diagnostic (MZI-3.5) - CX-9
Microsoft
Sunday, November 15, 2009 9:26:29 AM
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© 2005 Mitchell Repair Information Company, LLC.