Mazda CX-9 Grand Touring. Manual - part 286

DTC P061C [MZI-3.7] 

DTC P061C (MZI-3.7) DETECTION CONDITIONS AND POSSIBLE CAUSES 

3

ON position (Engine off).  



Verify related pending code or stored 
DTCs.  



Are other DTCs present?  

No

Go to the next step.

4

INSPECT FOR CORRECT PCM 
OPERATION  



Disconnect all the PCM connectors.  



Visually inspect for: 



Pushed out pins  



Corrosion  



Connect all the PCM connectors and 
verify that they seat correctly.  



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.

5

VERIFY TROUBLESHOOTING OF 
DTC P061F 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.  



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.

6

VERIFY AFTER REPAIR 
PROCEDURE  



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



Are any DTC present?  

Yes

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

No

Troubleshooting completed.

DTC P061C

Internal control module engine RPM 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 277 

© 2005 Mitchell Repair Information Company, LLC. 

DIAGNOSTIC PROCEDURE 

DTC P061C (MZI-3.7) DIAGNOSTIC PROCEDURE 

DETECTION CONDITION 



Indicates that a calculation error occurred in the PCM.  

POSSIBLE CAUSE 



CKP sensor circuit is open or short.  



CKP sensor circuit intermittent  



CKP sensor malfunction  



CMP sensor circuit is open or short.  



CMP sensor circuit intermittent  



CMP sensor malfunction  



PCM malfunction  

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

Go to the next step.

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?  

Yes

Go to the appropriate DTC troubleshooting. (See 
DTC TABLE [MZI-3.7].)

No

Go to the next step.

4

INSPECT CKP SENSOR SIGNAL SENT 
TO PCM 

 

NOTE:



The battery should be fully charged 
and the starting system should be 
functioning properly.  

Yes Go to the next step.

 

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 278 

© 2005 Mitchell Repair Information Company, LLC. 



Disable the inertia switch.  



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



Access the PCM and monitor the RPM 
PID.  



Crank the engine.  



Is the RPM greater than 150 rpm?  

No

Inspect the CKP sensor or related harness. 

Repair or replace suspected part, then go to the 

next step.

5

INSPECT FOR CORRECT PCM 
OPERATION  



Disconnect all the PCM connectors.  



Visually inspect for: 



Pushed out pins  



Corrosion  



Connect all the PCM connectors and 
verify that they seat correctly.  



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.

6

VERIFY TROUBLESHOOTING OF 
DTC P061C 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 the 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.

7

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.

 

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 279 

© 2005 Mitchell Repair Information Company, LLC. 

DTC P0620 [MZI-3.7] 

DTC P0620 (MZI-3.7) DETECTION CONDITIONS AND POSSIBLE CAUSES 

DTC P0620

Generator control circuit

DETECTION 

CONDITION 



The PCM reads the generator and sends a DTC through the network when the 
generator indicates a concern.  

POSSIBLE CAUSE 



Drive belt misadjustment  



Generator malfunction  



Open circuit between generator terminal LI and PCM terminal 2AG  



Open circuit between generator terminal B and battery positive terminal  



Short to ground between generator terminal LI and PCM terminal 2AG  



Short to power supply between generator terminal LI and PCM terminal 2AG  



Connector or terminal malfunction  



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 280 

© 2005 Mitchell Repair Information Company, LLC.