DIAGNOSTIC PROCEDURE
DTC P0315 (MZI-3.7) DIAGNOSTIC PROCEDURE
monitor.
POSSIBLE CAUSE
z
Crankshaft pulse wheel teeth malfunction
z
CKP sensor malfunction
STEP
INSPECTION
ACTION
1
VERIFY FREEZE FRAME DATA HAS
BEEN RECORDED
z
Has FREEZE FRAME DATA been
recorded?
Yes Go to the next step.
No Record FREEZE FRAME DATA on the repair
order, then go to the next step.
2
VERIFY RELATED REPAIR
INFORMATION AVAILABILITY
z
Verify related Service Bulletins and/or
on-line repair information availability.
z
Is any related Service Bulletins
available?
Yes
Perform repair or diagnosis according to the
available Service Bulletins.
z
If the vehicle is not repaired, go to the
next step.
No
Go to the next step.
3
VERIFY RELATED PENDING CODE
OR STORED DTCs
z
Turn the ignition switch off then to the
ON position (Engine off).
z
Verify related pending code or stored
DTCs.
z
Are other DTCs present?
Yes Go to the appropriate DTC troubleshooting.
(See
DTC TABLE [MZI-3.7]
.)
No
Go to the next step.
4
INSPECT PHYSICAL CONDITION OF
CRANKSHAFT PULSE WHEEL
z
Inspect the crankshaft pulse wheel for
damaged teeth.
z
Inspect the crankshaft pulse wheel for
wobble.
NOTE:
z
DTC P0315 is set when the PCM is
unable to learn and correct for the
mechanical variations in the
crankshaft pulse wheel tooth spacing
(the allowable correction tolerances
are exceeded).
Yes Go to the next step.
2008 Mazda CX-9 Grand Touring
2008 ENGINE PERFORMANCE On-Board Diagnostic (MZI-3.7) - Mazda CX-9
Microsoft
Sunday, November 15, 2009 10:08:36 AM
Page 161
© 2005 Mitchell Repair Information Company, LLC.
