Mazda CX-9 Grand Touring 2009 Manual page 929

2008 ENGINE PERFORMANCE On-Board Diagnostic (MZI-3.7) - Mazda CX-9
Verify related Service Bulletins and/or
on-line repair information availability.
2
Is any related Service Bulletins
available?
INSPECT IAT SENSOR TERMINAL
Turn the ignition switch off.
Disconnect MAF/IAT sensor
3
connector.
Inspect for bent terminal of MAF/IAT
sensor terminals E and F (part-side).
Is there any malfunction?
CLASSIFY IAT SENSOR
MALFUNCTION OR HARNESS
MALFUNCTION
Connect M-MDS to DLC-2.
4
Access IAT PID.
Verify IAT value when disconnecting
MAF/IAT sensor connector.
Does IAT value change?
INSPECT IAT SIGNAL CIRCUIT FOR
SHORT TO GROUND
Turn the ignition switch off.
Disconnect PCM connector.
5
Inspect continuity between MAF/IAT
sensor terminal F (wiring harness-
side) and body ground.
Is there continuity?
VERIFY TROUBLESHOOTING OF
DTC P0112 HAS BEEN COMPLETED
Verify that all disconnected
connectors reconnected.
Turn the ignition switch to the ON
6
position (Engine off).
Clear the DTC from the PCM memory
using the M-MDS.
Start engine and warm it up
completely.
Is same DTC present?
2008 Mazda CX-9 Grand Touring
No
Repair or replace suspected part, then go to Step
Yes
6.
No
Replace MAF/IAT sensor or harness, then go to
Yes
Step 6.
No
Repair or replace suspected part, then go to the
Yes
next step.
No
Replace the PCM, then go to the next step. (See
Yes PCM REMOVAL/INSTALLATION [MZI-
3.7] .)
No
If the vehicle is not repaired, go to the
next step.
Go to the next step.
Go to the next step.
Go to the next step.
Go to the next step.
Go to the next step.