Mazda CX-9 Grand Touring. Manual - part 330

 

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Mazda CX-9 Grand Touring. Manual - part 330

 

 

DIAGNOSTIC PROCEDURE 

NO.5 ENGINE STALLS-AFTER START/AT IDLE (MZI-3.7) DIAGNOSTIC PROCEDURE 

POSSIBLE 

CAUSE 

Fuel leakage from fuel injector  

Fuel injector clogging  

Ignition coil malfunction  

Improper air/fuel mixture ratio control  

Improper valve timing  

Improper operation variable valve timing control system  

Immobilizer system and/or circuit malfunction  

Immobilizer system operating property. (Ignition key is not registered.)  

Pressure regulator malfunction (built-in fuel pump unit) 

WARNING:

The following troubleshooting flow chart contains the fuel system diagnosis 
and repair procedures. Read the following warnings before servicing the fuel 
system: 

Fuel vapor is hazardous. It can easily ignite, causing serious injury 
and damage. Always keep sparks and flames away from fuel.  

Fuel line spills and leakage are dangerous. Fuel can ignite and cause 
serious injuries or death and damage. Fuel can also irritate skin and 
eyes. To prevent this, always complete "BEFORE SERVICE 
PRECAUTION" and "AFTER SERVICE PRECAUTION" described in this 
manual. 

(See BEFORE SERVICE PRECAUTION [MZI-3.7] .) 

(See AFTER SERVICE PRECAUTION [MZI-3.7] .) 

CAUTION:

Disconnecting/connecting quick release connector without cleaning it 
may cause damage to fuel pipe and quick release connector. Always 
clean quick release connector joint area before 
disconnecting/connecting, and make sure that it is free of foreign 
material.  

STEP

INSPECTION

RESULTS

ACTION

1

Connect the M-MDS to the DLC-2. 
Do the following conditions appear? 

The engine is not completely started. 

DTC P1260 is displayed.  

Yes

Both conditions appear:  
Go to Step 3.

No

Either or other condition appears:  

Go to the next step.

Yes

Go to the next step.

 

2008 Mazda CX-9 Grand Touring 

2008 ENGINE Symptom Troubleshooting (MZI-3.7) - Mazda CX-9

  

Microsoft 

 

Sunday, November 15, 2009 10:10:05 AM

Page 26 

© 2005 Mitchell Repair Information Company, LLC. 

2

Does the engine stall after approx. 2 s 
since the engine is started?

No

Immobilizer system is normal. 

Go to Step 9.

3

Is coil connector securely connected to 
coil?

Yes

Go to the next step.

No

Connect the coil connector securely. 

Return to Step 2.

4

Does the security light flush?

Yes

Go to the next step.

No

Inspect and repair or replace the following:

Wiring harnesses and connectors 

from keyless control module 

terminal 3W and instrument cluster 

terminal 1W  

Wiring harness and connectors from 

keyless control module terminal 3X 

and instrument cluster terminal 1X  

Instrument cluster  

 

(See INSTRUMENT CLUSTER 

INSPECTION .)

5

Connect the M-MDS to the DLC-2 and 
retrieve DTC for PCM, instrument cluster 
and keyless control module (with advanced 
keyless entry system). 
Are any of the following DTCs displayed?
DTC  
PCM: B1342, U0073, U0155  
Instrument cluster: B1213, B1600, 
B1601, B1602, B1681, B2103, 2139, 
B2431, U0110, U0214
  
Keyless control module (with advanced 
keyless entry system): B1681, B2103, 
B1213
 

Yes

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

No

Go to the next step.

6

Inspect for the following wiring harnesses 
and connectors: 
With advanced keyless entry system: 

Between coil terminal A and keyless 
control module terminal 3V  

Between coil terminal B and keyless 
control module terminal 3U  

 
Without advanced keyless entry system: 

Yes

Repair or replace the suspected wiring 
harness and connector.

Go to the next step, (with advanced 

 

2008 Mazda CX-9 Grand Touring 

2008 ENGINE Symptom Troubleshooting (MZI-3.7) - Mazda CX-9

  

Microsoft 

 

Sunday, November 15, 2009 10:10:05 AM

Page 27 

© 2005 Mitchell Repair Information Company, LLC. 

Between coil terminal A and 
instrument cluster terminal 1G  

Between coil terminal B and 
instrument cluster terminal 1E  

 
Is there any malfunction?

No

keyless entry system.) 

Go to Step 8. (without advanced keyless 

entry system.)

7

Inspect the following wiring harnesses and 
connectors for an open or short circuit: 

Between keyless control module 
terminal 3W and instrument cluster 
terminal 1W  

Between keyless control module 
terminal 3X and instrument cluster 
terminal 1X  

 
Is there any malfunction?

Yes

Repair or replace wiring harness and 
connectors.

No

Go to the next step.

8

Inspect for the following wiring harnesses 
and connectors: 

Between PCM terminal 1BG and 
instrument cluster terminal 1W  

Between PCM terminal 1BL and 
instrument cluster terminal 1X  

 
Is there any malfunction?

Yes

Repair or replace the suspected wiring 
harness and connector.

No

Go to the next step.

9

Verify the following: 

Vacuum connection  

Air cleaner element  

No air leakage from intake-air 
system  

No restriction of intake-air system  

Proper sealing of intake manifold 
and components attached to intake 
manifold  

Ignition wiring  

Fuel quality: proper octane, 
contamination, winter/summer blend 

Electrical connections  

Yes

Go to the next step.

No

Service if necessary. 

Repeat Step 9.

 

2008 Mazda CX-9 Grand Touring 

2008 ENGINE Symptom Troubleshooting (MZI-3.7) - Mazda CX-9

  

Microsoft 

 

Sunday, November 15, 2009 10:10:05 AM

Page 28 

© 2005 Mitchell Repair Information Company, LLC. 

Smooth operation of throttle valve  

 
Are all items normal?

10

Connect the M-MDS to the DLC-2. 
Access the APP1 and APP2, APP3 PIDs. 
Crank the engine with accelerator pedal 
released. 
Are the APP1 and APP2, APP3 PIDs 
indicating that the accelerator pedal is in 
the released position?

Yes

Go to the next step.

No

Inspect for the following: 

APP sensor  

Wiring harnesses and connectors for 

following: 

PCM terminal 1AC-APP 

sensor terminal B  

PCM terminal 1 AH-APP 

sensor terminal C  

PCM terminal 1Y-APP sensor 

terminal D  

PCM terminal 1AK-APP 

sensor terminal E  

PCM terminal 1BA-APP 

sensor terminal F  

PCM terminal 1 AD-APP 

sensor terminal G  

PCM terminal 1AG-APP 

sensor terminal H  

11

Connect the M-MDS to the DLC-2. 
Access the TP1, TP2 PID. Crank the 
engine with accelerator pedal released. 
Are the TP1, TP2 PID indicates the closed 
throttle position?

Yes

Go to the next step.

No

Inspect for the following: 

TP sensor  

Wiring harnesses and connectors for 

following: 

PCM terminal 2BO-TP sensor 

terminal A  

PCM terminal 2BR-TP sensor 

terminal B  

PCM terminal 2AD-TP sensor 

terminal C  

PCM terminal 2D-TP sensor 

terminal D  

PCM terminal 2AH-TP sensor 

terminal E  

PCM terminal 2Z-TP sensor 

terminal F  

 

2008 Mazda CX-9 Grand Touring 

2008 ENGINE Symptom Troubleshooting (MZI-3.7) - Mazda CX-9

  

Microsoft 

 

Sunday, November 15, 2009 10:10:05 AM

Page 29 

© 2005 Mitchell Repair Information Company, LLC. 

 

 

 

 

 

 

 

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