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Mazda CX-9 Grand Touring. Manual - part 304

DTC P1635 [MZI-3.7]

DTC P1635 (MZI-3.7) DETECTION CONDITIONS AND POSSIBLE CAUSES

DIAGNOSTIC PROCEDURE

DTC P1635 (MZI-3.7) DIAGNOSTIC PROCEDURE

REPAIR PROCEDURE [MZI-3.7].)



Are any DTCs present?

Troubleshooting completed.

DTC P1635

Tire/axle out of acceptable range

DETECTION

CONDITION



This DTC indicates the tire and axle information contained in the vehicle
identification block does not match the vehicle hardware.

POSSIBLE CAUSE



Incorrect tire size



Incorrect axle ratio



Incorrect vehicle identification configuration parameters

STEP

INSPECTION

ACTION

VERIFY FREEZE FRAME DATA HAS
BEEN RECORDED



Has FREEZE FRAME DATA been
recorded?

Yes Go to the next step.

Record FREEZE FRAME DATA on the repair

order, then go to the next step.

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
available Service Bulletins.



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

Go to the next step.

VERIFY VEHICLE IDENTIFICATION
TIRE DATA



Turn the ignition switch to the ON
position.



Connect the M-MDS to the DLC-2.



Access the data of the tire size.



Is it the same as a equipped tire?

Yes Go to the next step.

Perform PCM configuration procedure, then go

to Step 5. (See PCM CONFIGURATION

[MZI-3.7] .)

VERIFY GENUINE TIRES ARE
INSTALLED



Is genuine tires are equipped?

Yes Go to the next step.

Change to the genuine tire, 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 10:08:41 AM

Page 349

DTC P1639 [MZI-3.7]

DTC P1639 (MZI-3.7) DETECTION CONDITIONS AND POSSIBLE CAUSES

DIAGNOSTIC PROCEDURE

DTC P1639 (MZI-3.7) DIAGNOSTIC PROCEDURE

VERIFY TROUBLESHOOTING OF
DTC P1635 HAS BEEN COMPLETED



Verify that all disconnected
connectors reconnected.



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



Clear DTC from PCM memory using
M-MDS.



Start engine and warm up it
completely.



Is same DTC present?

Yes

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

Go to the next step.

VERIFY AFTER REPAIR
PROCEDURE



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



Are any DTCs present?

Yes

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

Troubleshooting completed.

DTC P1639

Vehicle ID block corrupted, that not programmed

DETECTION

CONDITION



This DTC indicates that the VID block is not programmed or the
information within is corrupt.

POSSIBLE CAUSE



New PCM



Incorrect PCM



Incorrect VID configuration

STEP

INSPECTION

ACTION

VERIFY FREEZE FRAME DATA HAS
BEEN RECORDED



Has FREEZE FRAME DATA been
recorded?

Yes Go to the next step.

Record FREEZE FRAME DATA on the repair

order, then go to the next step.

VERIFY RELATED REPAIR
INFORMATION AVAILABILITY

Yes Perform repair or diagnosis according to the

available Service Bulletins.

2008 Mazda CX-9 Grand Touring

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

Microsoft

Sunday, November 15, 2009 10:08:41 AM

Page 350

DTC P1650 [MZI-3.7]

DTC P1650 (MZI-3.7) DETECTION CONDITIONS AND POSSIBLE CAUSES



Verify related Service Bulletins and/or
on-line repair information availability.



Is any related Service Bulletins
available?



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

Perform the PCM reprogramming procedure.

(See PCM CONFIGURATION [MZI-3.7] .)

Then go to the next step.

VERIFY TROUBLESHOOTING OF
DTC P1639 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.



Start the engine and perform the
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] .)

Go to the next step.

VERIFY AFTER REPAIR
PROCEDURE



Perform the "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].)

Troubleshooting completed.

DTC P1650

PSP switch out of self-test range

DETECTION

CONDITION



In the KOEO self-test, this DTC indicates the PSP input to the PCM is high. In the
KOER self-test, this DTC indicates the PSP input did not change state.

POSSIBLE CAUSE



The steering wheel must be turned during KOER self-test



PSP switch malfunction



Open circuit between PSP switch terminal A and PCM terminal 2I



Short to ground circuit between PSP switch terminal A and PCM terminal 2I

2008 Mazda CX-9 Grand Touring

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

Microsoft

Sunday, November 15, 2009 10:08:41 AM

Page 351

DIAGNOSTIC PROCEDURE

DTC P1650 (MZI-3.7) DIAGNOSTIC PROCEDURE

STEP

INSPECTION

ACTION

VERIFY FREEZE FRAME DATA HAS
BEEN RECORDED



Has FREEZE FRAME DATA been
recorded?

Yes Go to the next step.

Record FREEZE FRAME DATA on the repair

order, then go to the next step.

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
available Service Bulletins.



If vehicle is not repaired, go to next step.

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 10:08:41 AM

Page 352

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