Mazda CX-9 Grand Touring. Manual - part 259



Is any related Service Bulletins 
available?  

No

Go to the next step.

3

INSPECT KS CONNECTOR FOR 
POOR CONNECTION  



Turn the ignition switch off.  



Disconnect the KS connector.  



Inspect for poor connection (such as 
damaged/pulled-out pins, corrosion). 



Are there any malfunction?  

Yes

Repair or replace suspected part, then go to Step 
9.

No

Go to the next step.

4

INSPECT KS (RH) SIGNAL CIRCUIT 
FOR SHORT TO POWER SUPPLY  



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



Measure the voltage between the 
following terminals: 



KS terminal C and body 
ground.  



KS terminal D and body 
ground.  



Are the voltage B+?  

Yes

Repair or replace suspected part, then go to Step 
9.

No

Go to the next step.

5

INSPECT KS (RH) CIRCUIT FOR 
SHORT TO GROUND  



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



Inspect for continuity between the 
following terminals: 



KS terminal C and body 
ground.  



KS terminal D and body 
ground.  



Are there continuity?  

Yes

Repair or replace suspected part, then go to Step 
9.

No

Go to the next step.

6

INSPECT PCM CONNECTOR FOR 
POOR CONNECTION  



Turn the ignition switch off.  



Disconnect the PCM sensor 
connector.  



Inspect for poor connection (such as 
damaged/pulled-out pins, corrosion). 

Yes

Repair or replace suspected part, then go to Step 
9.

No

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 10:08:37 AM

Page 169 

© 2005 Mitchell Repair Information Company, LLC. 

DTC P0330 [MZI-3.7] 

DTC P0330 (MZI-3.7) DETECTION CONDITIONS AND POSSIBLE CAUSES 



Are there any malfunction?  

7

INSPECT KS (RH) CIRCUIT FOR 
OPEN CIRCUIT  



Turn the ignition switch off.  



Inspect for continuity between the 
following terminals: 



KS terminal C and PCM 
terminal 2L  



KS terminal D and PCM 
terminal 2G  



Is there continuity?  

Yes Go to the next step.

No

Repair or replace suspected part, then go to Step 

9.

8

INSPECT THE KS (RH)  



Inspect the KS (RH). (See KNOCK 
SENSOR (KS) INSPECTION 
[MZI-3.7] .)  



Is there malfunction?  

Yes

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

No

Go to the next step.

9

VERIFY TROUBLESHOOTING OF 
DTC P0325 HAS BEEN COMPLETED 



Verify that all disconnected 
connectors reconnected.  



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



Perform the "KOEO or KOER self-
test" using the M-MDS. (See 
KOEO/KOER SELF TEST [MZI-
3.7].)  



Is the PENDING CODE for the 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.

10

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.

 

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 170 

© 2005 Mitchell Repair Information Company, LLC. 

DTC P0330

KS circuit (LH)

DETECTION 

CONDITION 



The KS detects vibrations upon increase and decrease in engine RPM. The KS 
generates a voltage based on this vibration. A DTC is set if the voltage goes outside 
a calibrated level.  

POSSIBLE CAUSE 



Open circuit wiring harness between KS terminal A and PCM terminal 2Q  



Short to power supply in wiring harness between KS terminal A and PCM terminal 
2Q  



Short to ground circuit between KS terminal A and PCM terminal 2Q  



Open circuit wiring harness between KS terminal B and PCM terminal 2M  



Short to power supply in wiring harness between KS terminal B and PCM terminal 
2M  



Short to ground circuit between KS terminal B and PCM terminal 2M  



Connector or terminal malfunction  



KS malfunction  

 

2008 Mazda CX-9 Grand Touring 

2008 ENGINE PERFORMANCE On-Board Diagnostic (MZI-3.7) - Mazda CX-9

  

Microsoft 

 

Sunday, November 15, 2009 10:08:37 AM

Page 171 

© 2005 Mitchell Repair Information Company, LLC. 

DIAGNOSTIC PROCEDURE 

DTC P0330 (MZI-3.7) DIAGNOSTIC PROCEDURE 

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

INSPECT KS CONNECTOR FOR 
POOR CONNECTION  



Turn the ignition switch off.  



Disconnect the KS connector.  



Inspect for poor connection (such as 
damaged/pulled-out pins, corrosion). 



Are there any malfunction?  

Yes

Repair or replace suspected part, then go to Step 
9.

No

Go to the next step.

4

INSPECT KS (LH) SIGNAL CIRCUIT 
FOR SHORT TO POWER SUPPLY  



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



Measure the voltage between the 
following terminals: 



KS terminal A and body 
ground.  



KS terminal B and body 
ground.  



Are there voltage B+?  

Yes

Repair or replace suspected part, then go to Step 
9.

No

Go to the next step.

5

INSPECT KS (LH) CIRCUIT FOR 
SHORT TO GROUND  



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



Inspect for continuity between the 
following terminals: 

Yes

Repair or replace suspected part, then go to Step 
9.

 

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 172 

© 2005 Mitchell Repair Information Company, LLC.