DTC P1288 [MZI-3.7]
DTC P1288 (MZI-3.7) DETECTION CONDITIONS AND POSSIBLE CAUSES
DIAGNOSTIC PROCEDURE
DTC P1288 (MZI-3.7) DIAGNOSTIC PROCEDURE
5
z
Inspect the CHT sensor. (See
CYLINDER
HEAD TEMPERATURE (CHT) SENSOR
INSPECTION [MZI-3.7]
.)
z
Is there any malfunction?
Yes next step.
No
Go to the next step.
6
VERIFY TROUBLESHOOTING OF DTC P1285,
P1299 HAS BEEN COMPLETED
z
Verify that all disconnected connectors are
reconnected.
z
Turn the ignition switch to the ON position
(Engine off).
z
Clear the DTC from the PCM memory using
the M-MDS.
z
Start the engine and run it at idle.
z
Retrieve DTCs using the M-MDS.
z
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.
7
VERIFY AFTER REPAIR PROCEDURE
z
Perform the "AFTER REPAIR
PROCEDURE". (See
AFTER REPAIR
PROCEDURE [MZI-3.7]
.)
z
Are any DTC present?
Yes
Go to the applicable DTC inspection.
(See
DTC TABLE [MZI-3.7]
.)
No
Troubleshooting completed.
DTC P1288
CHT sensor out of self-test range
DETECTION
CONDITION
z
Indicates the CHT sensor is out of self-test range. The engine is not at a
normal operating temperature.
POSSIBLE CAUSE
z
Cold engine
z
Engine overheating
z
Connector or terminal malfunction
z
Low engine coolant level
z
CHT sensor malfunction
STEP
INSPECTION
ACTION
VERIFY FREEZE FRAME DATA HAS
BEEN RECORDED
Yes Go to 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 323
© 2005 Mitchell Repair Information Company, LLC.
