DIAGNOSTIC PROCEDURE
DTC P1674 (MZI-3.5) DIAGNOSTIC PROCEDURE
DTC P1674
Control module software corrupted
DETECTION
CONDITION
z
Indicates that an error occurred in the PCM. This DTC is set in combination
with P2105.
POSSIBLE CAUSE
z
Software incompatibility issue
z
PCM 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
Perform the PCM reprogramming
procedure.
(see
PCM CONFIGURATION [MZI-
3.5]
.) Then go to the next step.
3
VERIFY TROUBLESHOOTING OF
DTC P1674 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 perform the
KOEO and KOER self-test.
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-
3.5]
.)
No
Go to the next step.
4
VERIFY AFTER REPAIR
PROCEDURE
z
Perform the "AFTER REPAIR
Yes
Go to the applicable DTC inspection.
(See
DTC TABLE [MZI-3.5]
.)
2007 Mazda CX-9 Grand Touring
2007 ENGINE PERFORMANCE On-Board Diagnostic (MZI-3.5) - CX-9
Microsoft
Sunday, November 15, 2009 9:26:37 AM
Page 384
© 2005 Mitchell Repair Information Company, LLC.