Mazda CX-9 Grand Touring 2007 Manual page 757

2007 ENGINE PERFORMANCE On-Board Diagnostic (MZI-3.5) - CX-9
Turn the ignition switch off.
Remove the air hose from the
throttle body.
Visually inspect for throttle plate
obstructions or sludge.
Slowly, push the throttle plate to
wide open and release.
Does the throttle plate move freely
to wide open and back?
5 INSPECT TP SENSOR OPERATION
Turn the ignition switch to the ON
position (Engine off).
Access the PCM and monitor the
TP1 and TP2 PIDs.
Slowly press the accelerator pedal
from fully released to fully
depressed while observing the
voltage readings.
Use the chart as a reference.
Inspect the TP sensor.
(see THROTTLE POSITION
(TP) SENSOR INSPECTION
[MZI-3.5]. )
Do all signal values smoothly
change when the accelerator is
depressed?
6 INSPECT TP SENSOR CIRCUIT
FOR INTERMITTENT CONCERN
Access the PCM and monitor the
TP1 and TP2 PIDs.
Wiggle, shake, and bend the
wiring harness from the TP to the
PCM.
Are the voltages between 0.49-
4.65 V?
7 INSPECT THROTTLE ACTUATOR
CONTROL MOTOR VISUALLY
NOTE:
2007 Mazda CX-9 Grand Touring
Yes
No
Yes
No
Yes
Go to the next step.
Replace the throttle body. Then go to Step
9.
Go to the next step.
Repair or replace suspected part, then go to
Step 9.
Replace the throttle body. Then go to Step
9.