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.