Mazda CX-9 Grand Touring. Manual - part 250

3

INSPECT FUEL INJECTOR NO.6 CONNECTOR 
FOR POOR CONNECTION  



Turn the ignition switch off.  



Disconnect the fuel injector No.6 connector.  



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



Are there malfunction?  

Yes

Repair or replace suspected part, 
then go to Step 8.

No

Go to the next step.

4

INSPECT PCM CONNECTOR FOR POOR 
CONNECTION  



Turn the ignition switch off.  



Disconnect the PCM connector.  



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



Is there malfunction?  

Yes

Repair or replace suspected part, 
then go to Step 8.

No

Go to the next step.

5

INSPECT FUEL INJECTOR NO.6 POWER SUPPLY 
CIRCUIT FOR OPEN CIRCUIT  



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



Measure the voltage between fuel injector No.6 
connector terminal B and body ground.  



Is the voltage B+?  

Yes Go to the next step.

No

Repair or replace suspected part, 

then go to Step 8.

6

INSPECT FUEL INJECTOR NO.6 SIGNAL 
CIRCUIT FOR OPEN CIRCUIT  



Inspect continuity between fuel injector No.6 
terminal A (wiring harness-side) and PCM terminal 
2BD (wiring harness-side).  



Is there continuity?  

Yes Go to the next step.

No

Repair or replace suspected part, 

then go to Step 8.

7

INSPECT FUEL INJECTOR NO.6  



Inspect the fuel injector No.6. (See FUEL 
INJECTOR INSPECTION [MZI-3.7] .)  



Is there any malfunction?  

Yes

Replace the fuel injector No.6, then 
go to the next step.

No

Go to the next step.

8

VERIFY TROUBLESHOOTING OF DTC P0206 
HAS BEEN COMPLETED  



Verify that all disconnected connectors reconnected. 



Clear DTC from memory using M-MDS.  



Start the engine.  



Perform the "KOEO/KOER self-test" (See 

Yes

Replace the PCM, then 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 10:08:36 AM

Page 133 

© 2005 Mitchell Repair Information Company, LLC. 

DTC P0222 [MZI-3.7] 

DTC P0222 (MZI-3.7) DETECTION CONDITIONS AND POSSIBLE CAUSES 

KOEO/KOER SELF TEST [MZI-3.7].)  



Is same DTC present?  

No

Go to the next step.

9

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 P0222

TP sensor No.2 circuit low input

DETECTION 

CONDITION 



The TP sensor No.2 circuit was flagged as a concern by the PCM indicating a 
low voltage or open circuit.  

POSSIBLE CAUSE 



TP sensor No.2 malfunction  



Connector or terminal malfunction  



Open circuit between throttle body terminal C and PCM terminal 2AD  



Short to ground circuit between throttle body terminal C and PCM terminal 
2AD  



Open circuit between throttle body terminal E and PCM terminal 2AH  

 

2008 Mazda CX-9 Grand Touring 

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

  

Microsoft 

 

Sunday, November 15, 2009 10:08:36 AM

Page 134 

© 2005 Mitchell Repair Information Company, LLC. 

DIAGNOSTIC PROCEDURE 

DTC P0222 (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.

VERIFY RELATED REPAIR 
INFORMATION AVAILABILITY  

Perform repair or diagnosis according to the 
available Service Bulletins. 

 

2008 Mazda CX-9 Grand Touring 

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

  

Microsoft 

 

Sunday, November 15, 2009 10:08:36 AM

Page 135 

© 2005 Mitchell Repair Information Company, LLC. 

2



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



Is any related Service Bulletins 
available?  

Yes



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

No

Go to the next step.

3

INSPECT TP SENSOR CONNECTOR FOR 
POOR CONNECTION  



Turn the ignition switch off.  



Disconnect the throttle body 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 TP SENSOR CIRCUIT FOR 
SHORT TO GROUND  



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



Inspect for continuity between the 
following circuits: 



TP sensor terminal D (wiring 
harness-side) and body ground  



TP sensor terminal C (wiring 
harness-side) and body ground  



Are there continuity?  

Yes

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

No

Go to the next step.

5

INSPECT PCM CONNECTOR FOR POOR 
CONNECTION  



Turn the ignition switch off.  



Disconnect the PCM 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.

6

INSPECT TP SIGNAL CIRCUIT FOR 
OPEN CIRCUIT  



Inspect for continuity between throttle 
body connector terminal C (wiring 
harness-side) and PCM terminal 2AD 
(wiring harness-side).  



Is there continuity?  

Yes Go to the next step.

No

Repair or replace suspected part, then go to 

Step 9.

INSPECT TP GROUND CIRCUIT FOR 
OPEN CIRCUIT  

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 10:08:36 AM

Page 136 

© 2005 Mitchell Repair Information Company, LLC.