Mazda CX-9 Grand Touring 2009 Manual page 1233

2008 ENGINE PERFORMANCE On-Board Diagnostic (MZI-3.7) - Mazda CX-9
availability.
Is any related Service Bulletins
available?
INSPECT MAF SENSOR
CONNECTOR FOR POOR
CONNECTION
Turn the ignition switch off.
Disconnect the MAF/IAT sensor
3
connector.
Inspect for poor connection (such as
damaged/pulled-out pins,
corrosion).
Are there any malfunction?
INSPECT THROTTLE ACTUATOR
CONTROL CIRCUIT FOR SHORT
TO POWER SUPPLY
Turn the ignition switch to the ON
position (Engine off).
Measure voltage between the
following circuits:
4
Throttle actuator terminal A
(wiring harness-side) and
body ground.
Throttle actuator terminal B
(wiring harness-side) and
body ground.
Are there voltage B+?
INSPECT THROTTLE ACTUATOR
CONTROL CIRCUITS FOR SHORT
EACH OTHER
Turn the ignition switch off.
Disconnect the throttle body and
5
PCM connector.
Measure resistance between throttle
actuator terminal A and B.
Is the resistance more than 10
kilohms?
INSPECT THROTTLE ACTUATOR
6
Inspect the throttle actuator. (See
2008 Mazda CX-9 Grand Touring
step.
No
Yes Repair or replace suspected part, then go to Step 8.
No
Yes Repair or replace suspected part, then go to Step 8.
No
Yes Go to the next step.
No Repair or replace suspected part, then go to Step 8.
Replace the throttle body, then go to Step 8. (See
Yes INTAKE-AIR SYSTEM
REMOVAL/INSTALLATION [MZI-3.7] .)
Go to the next step.
Go to the next step.
Go to the next step.