Mazda CX-9 Grand Touring. Manual - part 246

 

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Mazda CX-9 Grand Touring. Manual - part 246

 

 

DIAGNOSTIC PROCEDURE 

DTC P0201 (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 availability.  

Is any related Service Bulletins available?  

Yes

Perform repair or diagnosis 
according to available Service 
Bulletins. 

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

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 10:08:36 AM

Page 117 

© 2005 Mitchell Repair Information Company, LLC. 

3

INSPECT FUEL INJECTOR NO.1 CONNECTOR 
FOR POOR CONNECTION
  

Turn the ignition switch off.  

Disconnect the fuel injector No.1 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.1 POWER SUPPLY 
CIRCUIT FOR OPEN CIRCUIT
  

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

Measure the voltage between fuel injector No.1 
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.1 SIGNAL 
CIRCUIT FOR OPEN CIRCUIT
  

Inspect continuity between fuel injector No.1 
terminal A (wiring harness-side) and PCM terminal 
2BJ (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.1  

Inspect the fuel injector No.1. (See FUEL 
INJECTOR INSPECTION [MZI-3.7]
 .)  

Is there any malfunction?  

Yes

Replace the fuel injector No.1, then 
go to the next step.

No

Go to the next step.

8

VERIFY TROUBLESHOOTING OF DTC P0201 
HAS BEEN COMPLETED
  

Verify that all disconnected connectors 
reconnected.  

Clear DTC from memory using M-MDS.  

Start the engine.  

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 118 

© 2005 Mitchell Repair Information Company, LLC. 

DTC P0202 [MZI-3.7] 

DTC P0202 (MZI-3.7) DETECTION CONDITIONS AND POSSIBLE CAUSES 

Perform the "KOEO/KOER self-test" (See 
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 P0202

Injector circuit/open-cylinder No.2

DETECTION 

CONDITION 

The CCM monitors the operation of the fuel injector drivers in the PCM. The test
fails if the fuel injector circuitry is inoperative.  

POSSIBLE CAUSE 

Fuel injector No.2 malfunction  

Connector or terminal malfunction  

Open circuit between fuel pump relay and fuel injector No.2 terminal B  

Open circuit between fuel injector No.2 terminal A and PCM terminal 2BM  

 

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 119 

© 2005 Mitchell Repair Information Company, LLC. 

DIAGNOSTIC PROCEDURE 

DTC P0202 (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 availability.  

Is any related Service Bulletins available?  

Yes

Perform repair or diagnosis 
according to available Service 
Bulletins. 

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

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 10:08:36 AM

Page 120 

© 2005 Mitchell Repair Information Company, LLC. 

 

 

 

 

 

 

 

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