STEP
INSPECTION
ACTION
1
VERIFY FREEZE FRAME DATA HAS BEEN
RECORDED
z
Has FREEZE FRAME DATA been recorded?
Yes Go to the next step.
No
Record FREEZE FRAME DATA on the
repair order, then go to the next step.
2
VERIFY RELATED REPAIR INFORMATION
AVAILABILITY
z
Verify related Service Bulletins and/or on-line
repair information availability.
z
Is any related Service Bulletins available?
Yes
Perform repair or diagnosis according to
the available Service Bulletins.
z
If the vehicle is not repaired, go to
the next step.
No
Go to the next step.
3
INSPECT THROTTLE POSITION OPEN
CIRCUIT AND CLOSED VOLTAGES
z
Turn the ignition switch to the ON position
(Engine off).
z
Access the PCM and monitor the TP1 and
TP2 PIDs.
z
Verify the following values of the PIDs when
depressing the accelerator pedal to the floor
and releasing.
{
Pedal fully released: TP1 is 3.7-4.7 V
{
Pedal fully released: TP2 is 0.3-1.9 V
{
Pedal fully depressed: TP1 is 0.7-2.9 V
{
Pedal fully depressed: TP2 is 4.1-4.7 V
z
Are both PIDs within the specification?
Yes Go to the Step 5.
No
Go to the next step.
4
INSPECT FOR OBSTRUCTION OF
THROTTLE BODY
z
Turn the ignition switch off.
z
Remove the air hose from the throttle body.
z
Visually inspect for throttle plate obstructions
or sludge.
z
Slowly, push the throttle plate to wide open
WARNING:
z
Substantial opening and closing torque is
applied by this system. To prevent injury,
be careful to keep fingers away from
throttle mechanism when actuated. Failure
to follow these instructions may result in
personal injury.
Yes Go to the Step 7.
No Isolate and repair the obstruction. Then
go to Step 9.
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 372
© 2005 Mitchell Repair Information Company, LLC.
