Mazda CX-9 Grand Touring. Manual - part 293

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 ALL OTHER PATS DTCs  



Repair all other PATS DTCs before 
P0689. (See IMMOBILIZER SYSTEM 
COMPONENT REPLACEMENT/KEY 
ADDITION AND CLEARING 
[ADVANCED KEYLESS SYSTEM] .) 

(See IMMOBILIZER SYSTEM 
COMPONENT REPLACEMENT/KEY 
ADDITION AND CLEARING 
[KEYLESS ENTRY SYSTEM] .) 



Have all other PATS DTCs been 
diagnosed?  

Yes Go to the next step.

No

(See IMMOBILIZER SYSTEM 

COMPONENT REPLACEMENT/KEY 

ADDITION AND CLEARING 

[ADVANCED KEYLESS SYSTEM] .) 

(See IMMOBILIZER SYSTEM 

COMPONENT REPLACEMENT/KEY 

ADDITION AND CLEARING 

[KEYLESS ENTRY SYSTEM] .)

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 any malfunction?  

Yes

Repair or replace suspected part, then go to 
Step 7.

No

Go to the next step.

5

INSPECT BATTERY POSITIVE CIRCUIT 
FOR OPEN CIRCUIT  



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



Measure the voltage between PCM 
terminal 1BD (wiring harness-side) and 
body ground.  



Is the voltage B+ ?  

Yes Go to the next step.

No

Repair or replace suspected part, then go to 

Step 7.

 

2008 Mazda CX-9 Grand Touring 

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

  

Microsoft 

 

Sunday, November 15, 2009 10:08:40 AM

Page 305 

© 2005 Mitchell Repair Information Company, LLC. 

DTC P0690 [MZI-3.7] 

DTC P0690 (MZI-3.7) DETECTION CONDITIONS AND POSSIBLE CAUSES 

6

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 Go to the next step.

No The system is correctly. Go to the next step.

7

VERIFY TROUBLESHOOTING OF DTC 
P0689 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.

8

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 P0690

ECM/PCM power relay sense circuit high

DETECTION 

CONDITION 



This DTC sets when the passive anti theft system (PATS) system indicates the key 
is in the OFF, ACC, or LOCK position and the ignition switch position run circuit 
indicates ON or START position.  

POSSIBLE 

CAUSE 



Short to power supply between battery positive terminal and PCM terminal 1BD  



PATS system malfunction  



Ignition switch malfunction  

 

2008 Mazda CX-9 Grand Touring 

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

  

Microsoft 

 

Sunday, November 15, 2009 10:08:40 AM

Page 306 

© 2005 Mitchell Repair Information Company, LLC. 

DIAGNOSTIC PROCEDURE 

DTC P0690 (MZI-3.7) DIAGNOSTIC PROCEDURE 

 

2008 Mazda CX-9 Grand Touring 

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

  

Microsoft 

 

Sunday, November 15, 2009 10:08:40 AM

Page 307 

© 2005 Mitchell Repair Information Company, LLC. 

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 ALL OTHER PATS DTCs  



Repair all other PATS DTCs before 
P0690. (See IMMOBILIZER SYSTEM 
COMPONENT REPLACEMENT/KEY 
ADDITION AND CLEARING 
[ADVANCED KEYLESS SYSTEM] .) 

(See IMMOBILIZER SYSTEM 
COMPONENT REPLACEMENT/KEY 
ADDITION AND CLEARING 
[KEYLESS ENTRY SYSTEM] .) 



Have all other PATS DTCs been 
diagnosed?  

Yes Go to the next step.

No

(See IMMOBILIZER SYSTEM 

COMPONENT REPLACEMENT/KEY 

ADDITION AND CLEARING 

[ADVANCED KEYLESS SYSTEM] .) 

(See IMMOBILIZER SYSTEM 

COMPONENT REPLACEMENT/KEY 

ADDITION AND CLEARING 

[KEYLESS ENTRY SYSTEM] .)

4

INSPECT IGNITION SWITCH POSITION 
RUN CIRCUIT SHORT TO POWER 
SUPPLY  



Turn the ignition switch off.  



Measure the voltage between PCM 
terminal 1BD (wiring harness-side) and 
body ground.  



Is the voltage B+?  

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 

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 10:08:40 AM

Page 308 

© 2005 Mitchell Repair Information Company, LLC.