Additional Tests
SYSTEM/ACTUATOR TESTS
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Throttle Position
The Throttle Position function lets you increase or decrease throttle
position from the null (idle) state.
1.
Select
Throttle Position
in the ECM Special Functions menu, then
press
ENTER
.
n
A “status” message shows while the
tool links with the control unit. When
a link is established with the control
unit, the Throttle Position test screen
displays.
n
The screen shows the
Commanded
State
of the throttle, the
TP Desired
Angle
, and the
TP Indicated Angle
.
2.
Choose
Decrease
or
Increase
, as desired, to decrease or increase
the throttle position angle, and observe results on the display.
3.
Press
ENTER
to return to the ECM Special Functions menu.
Throttle Sweep
The Throttle Sweep function automatically moves the throttle from the null
(idle) state to wide open throttle.
1.
Select
Throttle Sweep
in the ECM Special Functions menu, then
press
ENTER
.
n
An “instructional” screen displays. Prepare the vehicle for test as
directed:
- Turn the ignition on. DO NOT start the engine.
2.
Choose
Next
to continue.
n
The Throttle Sweep test screen
displays.
n
The screen shows the throttle
Commanded State
and current
values
for
the
TAC
Motor
Command
,
TP Sensor 1
,
TP
Sensor 2
,
TAC Motor
and
TP
Sensors 1 and 2
.
3.
Choose
Start
to begin the test and observe results on the display.
4.
Choose
Stop
to end the test before wide open throttle is reached and
return the throttle to the null (idle) state.
5.
Choose
Exit
to return to the ECM Special Functions menu.
Reset Idle Learn
The Reset Idle Learn function resets the idle learn values for TP sensors
1 and 2.
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