Actron 9640 User Manual

The Idle Speed Test is used to test the functionality of the vehicle idle speed 

control system. The test allows the user to enter the desired engine speed. The 

test vehicle should respond by matching the speed commanded. If the vehicle 

matches the demanded engine speed, the idle speed control system is 

functioning properly.
Select Idle Speed Test from the 

Chrysler Functions list and press 

ENTER.
The tool instructions may vary 

depending on the vehicle information 

entered. However, in all cases it will 

instruct the user to perform the following:

1) Set the Parking Brake.
2) Turn A/C off.
3) Start engine and let idle.

Use the 

UP/DOWN arrow keys to 

change the Ideal RPM (engine speed). 

The vehicle should respond by 

matching the Ideal RPM. 
Press the 

BACK or FUNC key to end 

the test and return to the Chrysler 

Functions list. 

The Sensor Test is used to view the sensor outputs of some monitored vehicle 

systems. The Sensor Test is similar to View Data, as it allows the user to read 

the current output of various sensors throughout the vehicle. 
Select Sensor Test from the Chrysler 

Functions list and press 

ENTER.

Turn ignition key On — Engine can be Off or Running. Press 

ENTER and the 

scan tool will build a list of sensors and display them.

Chrysler Functions ?

6)Switch Test    ] 
7)Actuator Test  [

` 8)Idle Speed Test ~

Idle Speed Test
Actual RPM

750

Ideal RPM

755

][ To Change RPM

~

Chrysler Functions ?
` 9)Sensor Test

]

10)Controller Info [
11)Reset EMR Lamp ~