Mazda CX-9 Grand Touring 2007 Manual page 518

2007 ENGINE PERFORMANCE On-Board Diagnostic (MZI-3.5) - CX-9
DETECTION
CONDITION
POSSIBLE CAUSE
DIAGNOSTIC PROCEDURE
DTC P0315 (MZI-3.5) DIAGNOSTIC PROCEDURE
STEP
1 VERIFY FREEZE FRAME DATA
HAS BEEN RECORDED
Has FREEZE FRAME DATA
been recorded?
2 VERIFY RELATED REPAIR
INFORMATION AVAILABILITY
Verify related Service Bulletins
and/or on-line repair information
availability.
Is any related Service Bulletins
available?
3 VERIFY RELATED PENDING
CODE OR STORED DTCs
Turn the ignition switch off then
to the ON position (Engine off).
Verify related pending code or
stored DTCs.
Are other DTCs present?
4 INSPECT PHYSICAL CONDITION
OF CRANKSHAFT PULSE WHEEL
NOTE:
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).
Inspect the crankshaft pulse wheel
2007 Mazda CX-9 Grand Touring
The PCM is unable to learn and correct for mechanical inaccuracies in the
crankshaft pulse wheel tooth spacing. This DTC disables the misfire
monitor.
Crankshaft pulse wheel teeth malfunction
CKP sensor malfunction
INSPECTION ACTION
Yes Go to the next step.
No Record FREEZE FRAME DATA on the
repair order, then go to the next step.
Yes Perform repair or diagnosis according to
the available Service Bulletins.
If the vehicle is not repaired, go to
the next step.
No Go to the next step.
Yes Go to the appropriate DTC
troubleshooting.
(See DTC TABLE [MZI-3.5].)
No Go to the next step.
Yes Go to the next step.
No Repair if necessary. Then go to Step 6.