Mazda CX-9 Grand Touring 2009 Manual page 1236

2008 ENGINE PERFORMANCE On-Board Diagnostic (MZI-3.7) - Mazda CX-9
STEP
VERIFY FREEZE FRAME DATA HAS BEEN
RECORDED
1
Has FREEZE FRAME DATA been recorded?
VERIFY RELATED REPAIR INFORMATION
AVAILABILITY
2
Verify related Service Bulletins and/or on-line
repair information availability.
Is any related Service Bulletins available?
INSPECT THROTTLE POSITION OPEN
CIRCUIT AND CLOSED VOLTAGES
Turn the ignition switch to the ON position
(Engine off).
Access the PCM and monitor the TP1 and
TP2 PIDs.
Verify the following values of the PIDs when
3
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
Are both PIDs within the specification?
INSPECT FOR OBSTRUCTION OF
THROTTLE BODY
WARNING:
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
4
to follow these instructions may result in
personal injury.
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
2008 Mazda CX-9 Grand Touring
INSPECTION ACTION
Yes Go to the next step.
Record FREEZE FRAME DATA on the
No
repair order, then go to the next step.
Perform repair or diagnosis according to
the available Service Bulletins.
Yes
If the vehicle is not repaired, go to
the next step.
No Go to the next step.
Yes Go to the Step 5.
No Go to the next step.
Yes Go to the Step 7.
Isolate and repair the obstruction. Then
No
go to Step 9.