DTC P0320 [MZI-3.7]
DTC P0320 (MZI-3.7) DETECTION CONDITIONS AND POSSIBLE CAUSES
z
Check for a loose crankshaft pulse
wheel.
z
Check the CKP sensor for damage.
z
Are the CKP sensor and crankshaft
pulse wheel normal?
No
Repair if necessary. Then go to Step 6.
5
INSPECT DAMPER AND PULLEY
ASSEMBLY
z
Observe the crank pulley for wobble.
z
Examine the El pulse ring fastened to
the harmonic dampener.
z
Does the crank pulley wobble or is the
pulse ring loose or damaged?
NOTE:
z
This step is for engines that have
damper mounted pulse rings.
Remove the front cover if necessary
to observe the crank pulley.
Yes
Disconnect the negative battery terminal for 5
min to allow the PCM to learn the new profile.
Install a new pulley or damper assembly. Then
go to the next step.
No
Go to the next step.
6
VERIFY TROUBLESHOOTING OF DTC
P0315 HAS BEEN COMPLETED
z
Verify that all disconnected connectors
are reconnected.
z
Turn the ignition switch to the ON
position (Engine off).
z
Clear the DTC from the PCM memory
using the M-MDS.
z
Start the engine and run it at idle.
z
Retrieve DTCs using the M-MDS.
z
Is the PENDING CODE for this DTC
present?
Yes
Replace the PCM, then go to the next step. (See
PCM REMOVAL/INSTALLATION [MZI-
3.7]
.)
No
Go to the next step.
7
VERIFY AFTER REPAIR PROCEDURE
z
Perform the "AFTER REPAIR
PROCEDURE". (See
AFTER
REPAIR PROCEDURE [MZI-3.7]
.)
z
Are any DTC present?
Yes
Go to the applicable DTC inspection. (See
DTC TABLE [MZI-3.7]
.)
No
Troubleshooting completed.
2008 Mazda CX-9 Grand Touring
2008 ENGINE PERFORMANCE On-Board Diagnostic (MZI-3.7) - Mazda CX-9
Microsoft
Sunday, November 15, 2009 10:08:37 AM
Page 162
© 2005 Mitchell Repair Information Company, LLC.
