Mazda CX-9 Grand Touring. Manual — part 299

DIAGNOSTIC PROCEDURE

DTC P1290 (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.

VERIFY RELATED REPAIR
INFORMATION AVAILABILITY

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 329

© 2005 Mitchell Repair Information Company, LLC.

2



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



Is any related Service Bulletins
available?

Yes



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

No

Go to the next step.

3

INSPECT TERMINAL BENT



Turn the ignition switch off.



Disconnect the CHT sensor connector.



Inspect for bent of CHT sensor
terminals A and B (part-side).



Is there any malfunction?

Yes

Repair or replace the terminal, then go to Step
6.

No

Go to the next step.

4

INSPECT CHT SENSOR SIGNAL
CIRCUIT FOR SHORT TO GROUND



Turn the ignition switch off.



Inspect for continuity between CHT
sensor terminal B (wiring harness-side)
and body ground.



Is there continuity?

Yes

Repair or replace suspected part, then go to
Step 6.

No

Go to the next step.

5

INSPECT CHT SENSOR



Inspect the CHT sensor. (See
CYLINDER HEAD
TEMPERATURE (CHT) SENSOR
INSPECTION [MZI-3.7] .)



Is there any malfunction?

Yes

Replace the CHT sensor, then go to the next
step.

No

Go to the next step.

6

VERIFY TROUBLESHOOTING OF DTC
P1290 HAS BEEN COMPLETED



Verify that all disconnected connectors
reconnected.



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



Perform the KOEO or KOER self-test
using the M-MDS. (See KOEO/KOER
SELF TEST [MZI-3.7].)



Is the PENDING CODE for the 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 "AFTER REPAIR
PROCEDURE". (See AFTER
REPAIR PROCEDURE [MZI-3.7].)

Yes

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

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 330

© 2005 Mitchell Repair Information Company, LLC.

DTC P1336 [MZI-3.7]

DTC P1336 (MZI-3.7) DETECTION CONDITIONS AND POSSIBLE CAUSES

DIAGNOSTIC PROCEDURE

DTC P1336 (MZI-3.7) DIAGNOSTIC PROCEDURE



Are any DTCs present?

No

Troubleshooting completed.

DTC P1336

CKP/CMP sensor range/performance

DETECTION

CONDITION



The input signal to the PCM from the CKP sensor or the CMP sensor
is erratic.

POSSIBLE CAUSE



CKP sensor malfunction



CMP sensor malfunction



Base engine malfunction



Connector or terminal 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 on-line 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

Go to the next step.

3

VERIFY RELATED PENDING CODE
OR STORED DTC



Verify the related PENDING CODE
or stored DTCs.



Are other DTCs present?

Yes

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

No

Go to the next step.

4

INSPECT THE CKP SENSOR SIGNAL
SENT TO THE PCM

NOTE:



The battery should be fully
charged and the starting system

Yes Go to Step 8.

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 331

© 2005 Mitchell Repair Information Company, LLC.



Connect the M-MDS to the DLC-2.



Access RPM PID.



Crank the engine.



Is the reading more than 150 rpm?

should be functioning properly.

No

Go to the next step.

5

INSPECT THE FRONT COVER, CKP
SENSOR AND CKP SENSOR PULSE
WHEEL FOR OBVIOUS PHYSICAL
DAMAGE



Turn the ignition switch off.



Visually inspect the front cover,
CKP sensor and CKP sensor pulse
wheel for obvious physical damage.



Do any parts appear physically
damaged?

Yes Repair if necessary, then go to Step 11.

No

Go to the next step.

6

INSPECT CKP SENSOR
CONNECTOR FOR POOR
CONNECTION



Disconnect the CKP sensor
connector.



Inspect for poor connection (such as
damaged/pulled-out pins, corrosion).



Is there any malfunction?

Yes

Repair or replace suspected part, then go to Step
11.

No

Go to the next step.

7

INSPECT CKP SENSOR



Inspect the CKP sensor. (See
CRANKSHAFT POSITION
(CKP) SENSOR INSPECTION
[MZI-3.7] .)



Is there any malfunction?

Yes

Replace the CKP sensor, then go to Step 11. (See
CRANKSHAFT POSITION (CKP) SENSOR
REMOVAL/INSTALLATION [MZI-3.7] .)

No

Go to the next step.

8

INSPECT CMP SENSOR
CONNECTOR FOR POOR
CONNECTION



Disconnect the CMP sensor
connector.



Inspect for poor connection (such as
damaged/pulled-out pins, corrosion).



Is there any malfunction?

Yes

Repair or replace suspected part, then go to Step
11.

No

Go to the next step.

INSPECT CMP SENSOR

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 332

© 2005 Mitchell Repair Information Company, LLC.