V-MAC III Service Software v.2.9.4

V-MAC III essentially covers all Mack engines produced from 1998 to around 2004, give or take a year or two. It was with the emissions required by the EPA in 2004 that they began moving away from V-MAC III. Mack now refers to these trucks as “Mack Legacy” vehicles.

FEATURES:

1. Compatibility with VECU 1MS379 or V-MAC III software.

2. Service diagnostics:

a. Added capability to recognize a dual throttle vehicle and provide the ability to calibrate both pedals (requires 1MS379 VECU product software).

b. Vehicle data log display: For VECU 1MS379, the following values have been added to the vehicle data log screen:

• Maximum vehicle overspeed

• Maximum engine overspeed company threshold

• Maximum engine severe overspeed

• Severe engine overspeed occurrences

• Maximum engine speed

• Maximum vehicle speed

• Fan clutch cycles

3. Customer data programming:

a. Added a coolant fan on/off temperature disconnect threshold to the engine. ECU programmable parameters.

If the fan on/off activation temperature threshold is changed and the difference between the new engage temperature and the disengage temperature is less than 10°F, then the disconnect threshold will automatically be shown as 10°F lower than the activation temperature. The disconnect value can be modified, but a 10°F difference will be applied.

b. Fields for parameters that apply only to the on/off fan and are enabled only when the ON/OFF fan is selected:

• Fan coolant disconnect temperature threshold

• Fan coolant activation temperature threshold

• Fan air activation temperature threshold

• Air conditioning override time

c. Changes in parameter range:

• On/off fan coolant disconnect temperature threshold range 193 - 200°F

• On/off fan coolant activation temperature threshold range 203 - 210°F

• Air conditioning override time range 30 - 300 seconds

d. Road speed limit resolution was modified to show and allow speed input to the tenth of a MPH.

4. ADJUSTMENTS:

1. Service diagnostics

a. Accelerator pedal calibration for Cummins chassis.

Installation requirements:

• Windows 7 and Windows 10 (Help files are only compatible with Windows 7)