Mazda CX-9 Grand Touring. Manual — part 319

DTC P2195, P2197 [MZI-3.7]

DTC P2195, P2197 (MZI-3.7) DETECTION CONDITIONS AND POSSIBLE CAUSES

body ground.



Are there voltage B+?

5

INSPECT TP SENSOR SIGNAL
CIRCUITS FOR SHORT EACH
OTHER



Turn the ignition switch off.



Disconnect the throttle body and
PCM connector.



Measure resistance between throttle
body terminal F and C.



Is the resistance more than 10
kilohms?

Yes Go to the next step.

No

Repair or replace suspected part, then go to the

next step.

6

VERIFY TROUBLESHOOTING OF
DTC P2135 HAS BEEN COMPLETED



Verify that all disconnected
connectors reconnected.



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



Start the engine.



Is the same 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.

7

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

DTC troubleshooting completed.

DTC P2195

P2195: Front HO2S (RH) signal stuck lean

DTC P2197

P2197: Front HO2S (LH) signal stuck lean

DETECTION

CONDITION



A HO2S indicating lean 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.



Front HO2S malfunction



Fuel injector malfunction



Insufficient fuel line pressure

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 409

© 2005 Mitchell Repair Information Company, LLC.

DIAGNOSTIC PROCEDURE

DTC P2195, P2197 (MZI-3.7) DIAGNOSTIC PROCEDURE

POSSIBLE

CAUSE



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



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

Perform the PCM reprogramming procedure.

(See PCM CONFIGURATION [MZI-3.7] .)

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 P2195 or P2197 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].)

VERIFY CURRENT INPUT SIGNAL
STATUS



Connect the M-MDS to the DLC-2.



Verify the following PIDs.



(See PCM INSPECTION [MZI-3.7] .)



APP1

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 10:08:43 AM

Page 410

© 2005 Mitchell Repair Information Company, LLC.

5



APP2



APP3



ECT



MAF



TP_REL



VSS



Are the PIDs normal?

No

Inspect the malfunctioning part according to

the inspection results. Then go to Step 13.

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



ECT



MAF



TP_REL



Are the PIDs normal?

Yes Go to the next step.

No

Inspect the malfunctioning part according to

the inspection results. Then go to Step 13.

7

INSPECT INTAKE AIR SYSTEM FOR
EXCESSIVE AIR SUCTION



Visually inspect for looseness, cracks or
damage to the hoses in the intake-air
system.



Is there any malfunction?

Yes

Repair or replace the malfunctioning part, then
go to Step 13.

No

Go to the next step.

8

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 the engine speed.



Is the PID normal?

Yes Go to the next step.

No

Replace the MAF/IAT sensor, then go to Step

13.

INSPECT FRONT HO2S



Inspect the front HO2S (RH) (with

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 411

© 2005 Mitchell Repair Information Company, LLC.

9

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 13.

No

Go to the next step.

10

INSPECT FUEL INJECTOR



Inspect the fuel injector for the right
bank (with DTC P2195) or the left bank
(with DTC P2197). (See FUEL
INJECTOR INSPECTION [MZI-
3.7] .)



Is there any malfunction?

Yes

Replace the suspected fuel injector, then go to
Step 13. (See FUEL INJECTOR
REMOVAL/INSTALLATION [MZI-3.7] .)

No

Go to the next step.

11

INSPECT FUEL LINE PRESSURE



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



Is there any malfunction?

Yes Go to the next step.

No

Go to Step 13.

12

INSPECT FUEL SYSTEM FOR FUEL
LEAKAGE



Visually inspect for fuel leakage in the
fuel system.



Is there fuel leakage?

Yes

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

No

Replace the fuel pump unit, then go to the next

step. (See FUEL PUMP UNIT

REMOVAL/INSTALLATION [MZI-3.7] .)

13

VERIFY TROUBLESHOOTING OF DTC
P2195, P2197 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 the KOEO and KOER self-test.



Retrieve DTCs using the M-MDS.

Yes

Replace the PCM, then go to the next step.
(See PCM REMOVAL/INSTALLATION
[MZI-3.7] .)

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 412

© 2005 Mitchell Repair Information Company, LLC.