Mazda CX-9 Grand Touring 2009 Manual page 1187

2008 ENGINE PERFORMANCE On-Board Diagnostic (MZI-3.7) - Mazda CX-9
Inspect the CHT sensor. (See CYLINDER
HEAD TEMPERATURE (CHT) SENSOR
5
INSPECTION [MZI-3.7] .)
Is there any malfunction?
VERIFY TROUBLESHOOTING OF DTC P1285,
P1299 HAS BEEN COMPLETED
Verify that all disconnected connectors are
reconnected.
Turn the ignition switch to the ON position
6
(Engine off).
Clear the DTC from the PCM memory using
the M-MDS.
Start the engine and run it at idle.
Retrieve DTCs using the M-MDS.
Is the PENDING CODE for this DTC present?
VERIFY AFTER REPAIR PROCEDURE
Perform the "AFTER REPAIR
7
PROCEDURE". (See AFTER REPAIR
PROCEDURE [MZI-3.7].)
Are any DTC present?
DTC P1288 [MZI-3.7]
DTC P1288 (MZI-3.7) DETECTION CONDITIONS AND POSSIBLE CAUSES
DTC P1288
DETECTION
CONDITION
POSSIBLE CAUSE
DIAGNOSTIC PROCEDURE
DTC P1288 (MZI-3.7) DIAGNOSTIC PROCEDURE
STEP
VERIFY FREEZE FRAME DATA HAS
BEEN RECORDED
2008 Mazda CX-9 Grand Touring
CHT sensor out of self-test range
Indicates the CHT sensor is out of self-test range. The engine is not at a
normal operating temperature.
Cold engine
Engine overheating
Connector or terminal malfunction
Low engine coolant level
CHT sensor malfunction
INSPECTION
Yes next step.
No Go to the next step.
Replace the PCM, then go to the next
step. (See PCM
Yes
REMOVAL/INSTALLATION [MZI-
3.7] .)
No Go to the next step.
Go to the applicable DTC inspection.
Yes
(See DTC TABLE [MZI-3.7].)
No Troubleshooting completed.
ACTION
Yes Go to next step.