5
z
Turn the ignition switch to the ON position
(Engine off).
z
Access the PCM and monitor the TP1 and
TP2 PIDs.
z
Slowly press the accelerator pedal from fully
released to fully depressed while observing
the voltage readings.
z
Use the chart as a reference.
z
Inspect the TP sensor.
(See
THROTTLE POSITION (TP)
SENSOR INSPECTION [MZI-3.7]
.)
z
Do all signal values smoothly change when
the accelerator is depressed?
Yes Go to the next step.
No
Replace the throttle body. Then go to
Step 9.
6
INSPECT TP SENSOR CIRCUIT FOR
INTERMITTENT CONCERN
z
Access the PCM and monitor the TP1 and
TP2 PIDs.
z
Wiggle, shake, and bend the wiring harness
from the TP to the PCM.
z
Are the voltages between 0.49-4.65 V?
Yes Go to the next step.
No
Repair or replace suspected part, then go
to Step 9.
7
INSPECT THROTTLE ACTUATOR
CONTROL MOTOR VISUALLY
z
Turn the ignition switch off.
z
Inspect the throttle actuator control motor for
damaged housing, wiring harness connector,
and wiring harness.
z
Are there any concerns with the throttle
actuator control motor hardware?
NOTE:
z
Make sure the throttle body connector is
properly connected.
Yes
Replace the throttle body. Then go to
Step 9.
No
Go to the next step.
8
INSPECT THROTTLE ACTUATOR
CONTROL CIRCUITS FOR SHORT EACH
OTHER
z
Turn the ignition switch off.
z
Measure resistance between throttle actuator
Yes Go to the next step.
No
Repair or replace suspected part, then go
2008 Mazda CX-9 Grand Touring
2008 ENGINE PERFORMANCE On-Board Diagnostic (MZI-3.7) - Mazda CX-9
Microsoft
Sunday, November 15, 2009 10:08:42 AM
Page 377
© 2005 Mitchell Repair Information Company, LLC.
