Mazda CX-9 Grand Touring. Manual - part 320

 

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Mazda CX-9 Grand Touring. Manual - part 320

 

 

DTC P2196, P2198 [MZI-3.7] 

DTC P2196, P2198 (MZI-3.7) DETECTION CONDITIONS AND POSSIBLE CAUSES 

DIAGNOSTIC PROCEDURE 

DTC P2196, P2198 (MZI-3.7) DIAGNOSTIC PROCEDURE 

Is the PENDING CODE for this DTC 
present?  

14

VERIFY AFTER REPAIR PROCEDURE 

Perform "AFTER REPAIR 
PROCEDURE". (See AFTER 
REPAIR PROCEDURE [MZI-3.7]
.)  

Are any DTC present?  

Yes

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

No

Troubleshooting completed.

DTC P2196

P2196: Front HO2S (RH) signal stuck rich

DTC P2198

P2198: Front HO2S (LH) signal stuck rich

DETECTION 

CONDITION 

A HO2S indicating rich at the end of a test is trying to correct for an over-rich 
condition. The test fails when the fuel control system no longer detects 
switching for a calibrated amount of time  

POSSIBLE 

CAUSE 

Front HO2S malfunction  

Fuel injector malfunction  

Insufficient fuel line pressure  

Leakage exhaust gas  

Air suction at intake-air system malfunction  

Leakage fuel  

MAF sensor malfunction  

ECT sensor malfunction  

PCM malfunction  

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 online repair information 
availability.  

Yes

Perform repair or diagnosis according to the 
available Service Bulletins. 

If the vehicle is not repaired, 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 10:08:43 AM

Page 413 

© 2005 Mitchell Repair Information Company, LLC. 

Is any related Service Bulletins 
available?  

No

Perform the PCM reprogramming procedure. 

Then go to the next step.

3

VERIFY RELATED PENDING CODE 
OR STORED DTCs
  

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

Verify the related PENDING CODE 
or stored DTCs using the M-MDS.  

Yes

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

No

Go to the next step.

4

IDENTIFY TRIGGER DTC FOR 
FREEZE FRAME DATA
  

Is DTC P2196 or P2198 on the 
FREEZE FRAME DATA?  

Yes Go to the next step.

No

Go to the troubleshooting for the DTC on the 

FREEZE FRAME DATA. (See DTC TABLE 

[MZI-3.7].)

5

VERIFY CURRENT INPUT SIGNAL 
STATUS
  

Connect the M-MDS to the DLC-2.  

Verify the following PIDs. (See 
PCM INSPECTION [MZI-3.7] .) 

APP1  

APP2  

APP3  

ECT  

MAF  

TP_REL  

VSS  

Are the PIDs normal?  

Yes Go to the next step.

No

Inspect the malfunctioning part according to the 

inspection results. 

Then go to Step 11.

6

VERIFY CURRENT INPUT SIGNAL 
STATUS UNDER FREEZE FRAME 
DATA CONDITION
  

Connect the M-MDS to the DLC-2.  

Verify the following PIDs under the 
FREEZE FRAME DATA condition. 

(See PCM INSPECTION [MZI-
3.7]
 .) 

APP1  

APP2  

APP3  

Yes Go to the next step.

No

Inspect the malfunctioning part according to the 

inspection results. Then go to Step 11.

 

2008 Mazda CX-9 Grand Touring 

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

  

Microsoft 

 

Sunday, November 15, 2009 10:08:43 AM

Page 414 

© 2005 Mitchell Repair Information Company, LLC. 

ECT  

MAF  

TP_REL  

VSS  

Are the PIDs normal?  

7

VERIFY CURRENT INPUT SIGNAL 
STATUS OF MAF SENSOR
  

Connect the M-MDS to the DLC-2.  

Start the engine.  

Access the MAF PID.  

Verify that the MAF PID changes 
quickly according to engine speed.  

Is the PID normal?  

Yes Go to the next step.

No Replace the MAF/IAT sensor, then go to Step 11.

8

INSPECT FRONT HO2S  

Inspect the front HO2S (RH) (with 
DTC P2195) or the front HO2S (LH) 
(with DTC P2197). 

(See FRONT HEATED OXYGEN 
SENSOR (HO2S) INSPECTION 
[MZI-3.7]
 .) 

Is there any malfunction?  

Yes

Inspect the related wiring harnesses 
If there is no malfunction 
Replace the HO2S, then go to Step 11.

No

Go to the next step.

9

INSPECT FUEL INJECTOR  

Inspect the fuel injector for the right 
bank (with DTC P2196) or the left 
bank (with DTC P2198). 

(See FUEL INJECTOR 
INSPECTION [MZI-3.7]
 .) 

Is there any malfunction?  

Yes

Replace the suspected fuel injector, then go to 
Step 11. (See FUEL INJECTOR 
REMOVAL/INSTALLATION [MZI-3.7]
 .)

No

Go to the next step.

10

INSPECT FUEL LINE PRESSURE  

Perform the "FUEL LINE 
PRESSURE INSPECTION". 

(See FUEL LINE PRESSURE 
INSPECTION [MZI-3.7]
 .) 

Is there any malfunction?  

Yes

Replace the malfunctioning part. 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 10:08:43 AM

Page 415 

© 2005 Mitchell Repair Information Company, LLC. 

DTC P2270, P2272 [MZI-3.7] 

DTC P2270, P2272 (MZI-3.7) DETECTION CONDITIONS AND POSSIBLE CAUSES 

DIAGNOSTIC PROCEDURE 

DTC P2270, P2272 (MZI-3.7) DIAGNOSTIC PROCEDURE 

11

VERIFY TROUBLESHOOTING OF 
DTC P2196, P2198 HAS BEEN 
COMPLETED
  

Verify that all disconnected 
connectors are reconnected.  

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

Clear the DTC from the PCM 
memory using the M-MDS.  

Perform no load racing at the engine 
speed of 2,500-3,500 rpm for 60s or 
more, then idle the engine for 60s or 
more.  

Perform KOEO and KOER self-test. 

Retrieve DTCs using the M-MDS.  

Is the PENDING CODE for this 
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.

12

VERIFY AFTER REPAIR 
PROCEDURE
  

Perform "AFTER REPAIR 
PROCEDURE". (See AFTER 
REPAIR PROCEDURE [MZI-
3.7]
.)  

Are any DTC present?  

Yes

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

No

Troubleshooting completed.

DTC P2270

P2270: Rear HO2S (RH) signal stuck lean

DTC P2272

P2272: Rear HO2S (LH) signal stuck lean

DETECTION 

CONDITION 

The downstream HO2S is forced rich and monitored by the PCM. The test 
fails if the PCM does not detect the output of the HO2S in a calibrated 
amount of time  

POSSIBLE CAUSE 

Rear HO2S malfunction  

Leakage exhaust gas  

STEP

INSPECTION

ACTION

VERIFY FREEZE FRAME DATA HAS 

 

2008 Mazda CX-9 Grand Touring 

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

  

Microsoft 

 

Sunday, November 15, 2009 10:08:43 AM

Page 416 

© 2005 Mitchell Repair Information Company, LLC. 

 

 

 

 

 

 

 

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