Mazda CX-9 Grand Touring. Manual - part 307

availability.  



Is any related Service Bulletins 
available?  

step.  

No

Go to the next step.

3

INSPECT THROTTLE BODY 
CONNECTOR FOR POOR 
CONNECTION  



Turn the ignition switch to the ON 
position (Engine 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 THE THROTTLE 
ACTUATOR  



Inspect the throttle actuator. (See 
THROTTLE BODY 
INSPECTION [MZI-3.7] .)  



Is there malfunction?  

Yes

Replace the throttle body, then go to Step 9. (See 
INTAKE-AIR SYSTEM 
REMOVAL/INSTALLATION [MZI-3.7] .)

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).  



Is there any malfunction?  

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

No

Go to the next step.

6

INSPECT THROTTLE ACTUATOR 
CONTROL CIRCUIT FOR OPEN  



Disconnect the PCM connector.  



Inspect for continuity between the 
following terminals: 



Throttle body terminal A and 
PCM terminal 2BO  



Throttle body terminal B and 
PCM terminal 2BR  



Are there continuity?  

Yes Go to the next step.

No Repair or replace suspected part, then go to Step 9.

INSPECT TP SENSOR SIGNAL 

 

2008 Mazda CX-9 Grand Touring 

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

  

Microsoft 

 

Sunday, November 15, 2009 10:08:42 AM

Page 361 

© 2005 Mitchell Repair Information Company, LLC. 

7

CIRCUITS FOR SHORT EACH 
OTHER  



Turn the ignition switch off.  



Disconnect the throttle body and 
PCM connector.  



Measure resistance between throttle 
body terminal A and B.  



Is the resistance more than 10 
kilohms?  

Yes Go to the next step.

No Repair or replace suspected part, then go to Step 9.

8

INSPECT HROTTLE ACTUATOR 
CONTROL CIRCUIT FOR SHORT 
TO POWER SUPPLY  



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



Measure the voltage between the 
following terminals: 



Throttle body terminal A and 
body ground.  



Throttle body terminal B and 
body ground.  



Are there voltage B+?  

Yes

Repair or replace suspected part, then go to the next 
step.

No

Go to the next step.

9

VERIFY TROUBLESHOOTING OF 
DTC P2100 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 "AFTER REPAIR 
PROCEDURE". (See AFTER 
REPAIR PROCEDURE [MZI-

Yes

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

 

2008 Mazda CX-9 Grand Touring 

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

  

Microsoft 

 

Sunday, November 15, 2009 10:08:42 AM

Page 362 

© 2005 Mitchell Repair Information Company, LLC. 

DTC P2101 [MZI-3.7] 

DTC P2101 (MZI-3.7) DETECTION CONDITIONS AND POSSIBLE CAUSES 

DIAGNOSTIC PROCEDURE 

3.7].)  



Are any DTCs present?  

No

Troubleshooting completed.

DTC P2101

Throttle actuator circuit range/performance

DETECTION 

CONDITION 



A PCM malfunction flag is set indicating the motor circuit is open, and may 
require cycling the key.  

POSSIBLE CAUSE 



Throttel actuator circuit are cross-wired  

 

2008 Mazda CX-9 Grand Touring 

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

  

Microsoft 

 

Sunday, November 15, 2009 10:08:42 AM

Page 363 

© 2005 Mitchell Repair Information Company, LLC. 

DTC P2101 (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

VERIFY RELATED PENDING CODE 
OR STORED DTCs FOR ALL OF 
VEHICLE MODULE  



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



Verify related pending code or stored 
DTCs.  



Is other DTCs present?  

Yes

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

No

Go to the next step.

4

INSPECT THROTTLE BODY AND 
PCM CONNECTOR FOR POOR 
CONNECTION  



Turn the ignition switch off.  



Disconnect the throttle body and 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 
6.

No

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.  

Yes Go to the next step.

No

The system is correctly. 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 10:08:42 AM

Page 364 

© 2005 Mitchell Repair Information Company, LLC.