Mazda CX-9 Grand Touring. Manual — part 283

DTC P0604 [MZI-3.7]

DTC P0604 (MZI-3.7) DETECTION CONDITIONS AND POSSIBLE CAUSES

DIAGNOSTIC PROCEDURE

DTC P0604 (MZI-3.7) DIAGNOSTIC PROCEDURE



Retrieve DTCs using the M-MDS.



Is the PENDING CODE for this DTC
present?

7

VERIFY TROUBLESHOOTING OF DTC
P0603 HAS BEEN COMPLETED



Verify that all disconnected connectors
are reconnected.



Turn the ignition switch to the ON
position (Engine off).



Clear the DTC from the PCM memory
using the M-MDS.



Perform the "KOEO and KOER self-
test". (See KOEO/KOER SELF TEST
[MZI-3.7].)



Retrieve DTCs using the M-MDS.



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



Perform the "AFTER REPAIR
PRECAUTION". (See AFTER
REPAIR PROCEDURE [MZI-3.7].)



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



Indicates the PCM RAM has been corrupted.

POSSIBLE CAUSE



Module reprogramming



Aftermarket performance products.



PCM malfunction

STEP

INSPECTION

ACTION

1

VERIFY FREEZE FRAME DATA HAS
BEEN RECORDED



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.

DTC P0605 [MZI-3.7]

DTC P0605 (MZI-3.7) DETECTION CONDITIONS AND POSSIBLE CAUSES

DIAGNOSTIC PROCEDURE

recorded?

order, then go to the next step.

2

VERIFY RELATED REPAIR
INFORMATION AVAILABILITY



Verify related Service Bulletins
and/or on-line repair information
availability.



Is any related Service Bulletins
available?

Yes

Perform repair or diagnosis according to the
available Service Bulletins.



If the vehicle is not repaired, go to the next
step.

No

Perform PCM reprograming using the M-MDS,

then go to next step.

3

VERIFY TROUBLESHOOTING OF
P0604 HAS BEEN COMPLETED



Verify that all disconnected
connectors are reconnected.



Turn the ignition switch to the ON
position (Engine off).



Clear the DTC from the PCM
memory using the M-MDS.



Perform the "KOEO and KOER self-
test". (See KOEO/KOER SELF
TEST [MZI-3.7].)



Retrieve DTCs using the M-MDS.



Is the PENDING CODE for this DTC
present?

Yes

Replace the PCM, go to the next step. (See PCM
REMOVAL/INSTALLATION [MZI-3.7] .)

No

Go to the next step.

4

VERIFY AFTER REPAIR
PROCEDURE



Perform the "After Repair Procedure".
(See AFTER REPAIR
PROCEDURE [MZI-3.7].)



Are any DTCs present?

Yes

Go to the applicable DTC inspection. (See DTC
TABLE [MZI-3.7].)

No

Troubleshooting completed.

DTC P0605

PCM read only memory (ROM) error

DETECTION CONDITION



The PCM ROM has been corrupted.

POSSIBLE CAUSE



An attempt was made to change the calibration



Module programming error



PCM malfunction

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 266

© 2005 Mitchell Repair Information Company, LLC.

DTC P0605 (MZI-3.7) DIAGNOSTIC PROCEDURE

DTC P0606 [MZI-3.7]

DTC P0606 (MZI-3.7) DETECTION CONDITIONS AND POSSIBLE CAUSES

STEP

INSPECTION

ACTION

1

VERIFY FREEZE FRAME DATA HAS
BEEN RECORDED



Has FREEZE FRAME DATA been
recorded?

Yes Go to next step.

No

Record FREEZE FRAME DATA on the repair

order, then go to next step.

2

VERIFY RELATED REPAIR
INFORMATION AVAILABILITY



Verify related Service Bulletins and/or
on-line repair information availability.



Is any related Service Bulletins
available?

Yes

Perform repair or diagnosis according to
available Service Bulletins.



If vehicle is not repaired, go to next step.

No

Perform PCM reprograming using the M-MDS,

then go to next step.

3

VERIFY TROUBLESHOOTING OF
DTC P0605 HAS BEEN COMPLETED



Verify that all disconnected connectors
are reconnected.



Turn the ignition switch to the ON
position (Engine off).



Clear the DTC from the PCM memory
using the M-MDS.



Perform the "KOEO and KOER self-
test". (See KOEO/KOER SELF
TEST [MZI-3.7].)



Retrieve DTCs using the M-MDS.



Is the PENDING CODE for this DTC
present?

Yes

Replace the PCM, then go to next step. (See
PCM REMOVAL/INSTALLATION [MZI-
3.7] .)

No

Go to next step.

4

VERIFY AFTER REPAIR PROCEDURE



Perform the "AFTER REPAIR
PRECAUTION". (See AFTER
REPAIR PROCEDURE [MZI-3.7].)



Are any DTCs present?

Yes

Go to the applicable DTC inspection. (See DTC
TABLE [MZI-3.7].)

No

Troubleshooting completed.

DTC P0606

ECM/PCM processor

DETECTION

CONDITION



This DTC indicates a register hardback (PCM internal
communications) error.

POSSIBLE CAUSE



PCM malfunction

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 267

© 2005 Mitchell Repair Information Company, LLC.

DIAGNOSTIC PROCEDURE

DTC P0606 (MZI-3.7) DIAGNOSTIC PROCEDURE

DTC P0607 [MZI-3.7]

DTC P0607 (MZI-3.7) DETECTION CONDITIONS AND POSSIBLE CAUSES

STEP

INSPECTION

ACTION

1

VERIFY FREEZE FRAME DATA HAS
BEEN RECORDED



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



Verify related Service Bulletins
and/or on-line repair information
availability.



Is any related Service Bulletins
available?

Yes

Perform repair or diagnosis according to the
available Service Bulletins.



If the vehicle is not repaired, go to the next
step.

No

Perform PCM reprograming using the M-MDS,

then go to next step.

3

VERIFY TROUBLESHOOTING OF
P0606 HAS BEEN COMPLETED



Verify that all disconnected
connectors are reconnected.



Turn the ignition switch to the ON
position (Engine off).



Clear the DTC from the PCM
memory using the M-MDS.



Perform the "KOEO and KOER self-
test". (See KOEO/KOER SELF
TEST [MZI-3.7].)



Retrieve DTCs using the M-MDS.



Is the PENDING CODE for this DTC
present?

Yes

Replace the PCM, go to the next step. (See PCM
REMOVAL/INSTALLATION [MZI-3.7] .)

No

Go to the next step.

4

VERIFY AFTER REPAIR
PROCEDURE



Perform the "After Repair Procedure".
(See AFTER REPAIR
PROCEDURE [MZI-3.7].)



Are any DTCs present?

Yes

Go to the applicable DTC inspection. (See DTC
TABLE [MZI-3.7].)

No

Troubleshooting completed.

DTC P0607

Control module performance

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 268

© 2005 Mitchell Repair Information Company, LLC.