DTC P0604 [MZI-3.7]
DTC P0604 (MZI-3.7) DETECTION CONDITIONS AND POSSIBLE CAUSES
DIAGNOSTIC PROCEDURE
DTC P0604 (MZI-3.7) DIAGNOSTIC PROCEDURE
z
Retrieve DTCs using the M-MDS.
z
Is the PENDING CODE for this DTC
present?
7
VERIFY TROUBLESHOOTING OF DTC
P0603 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
Perform the "KOEO and KOER self-
test". (See
KOEO/KOER SELF TEST
[MZI-3.7]
.)
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.
8
VERIFY AFTER REPAIR PROCEDURE
z
Perform the "AFTER REPAIR
PRECAUTION". (See
AFTER
REPAIR PROCEDURE [MZI-3.7]
.)
z
Are any DTCs present?
Yes
Go to the applicable DTC inspection. (See
DTC TABLE [MZI-3.7]
.)
No
Troubleshooting completed.
DTC P0604
Internal control module random access memory (RAM) error
DETECTION CONDITION
z
Indicates the PCM RAM has been corrupted.
POSSIBLE CAUSE
z
Module reprogramming
z
Aftermarket performance products.
z
PCM malfunction
STEP
INSPECTION
ACTION
1
VERIFY FREEZE FRAME DATA HAS
BEEN RECORDED
z
Has FREEZE FRAME DATA been
Yes Go to the next step.
No
Record FREEZE FRAME DATA on the repair
2008 Mazda CX-9 Grand Touring
2008 ENGINE PERFORMANCE On-Board Diagnostic (MZI-3.7) - Mazda CX-9
Microsoft
Sunday, November 15, 2009 10:08:39 AM
Page 265
© 2005 Mitchell Repair Information Company, LLC.
