What is a VGT actuator driver circuit?

What is a VGT actuator driver circuit?

Circuit Description The VGT actuator is a smart device that receives information via the J1939 data link from the primary engine electronic control module (ECM). The VGT actuator performs its own diagnostics and reports failures back to the primary engine ECM, using the J1939 data link.

How does a VGT actuator work?

The VGT actuator moves either vanes or a sliding sleeve inside the turbocharger which increases or decreases exhaust gases driving the turbine wheel, which in turn, increases or decreases turbo boost based on engine operating conditions.

What is VGT valve?

Variable-geometry turbochargers (VGTs), occasionally known as variable-nozzle turbines (VNTs), are a type of turbochargers, usually designed to allow the effective aspect ratio of the turbocharger to be altered as conditions change.

What does fault code 1894 VGT actuator mean?

This fault code means that the turbocharger VGT actuator has failed internally. The Actuator needs to be removed by a Cummins shop and turbo sector gear of the turbo inspected for movement. In some cases the turbo sector gear seized and caused the actuator to fail.

How to get the VGT code for Cummins ISX?

VGT code HELP !!! Discussion in ‘ International Forum ‘ started by jameson1985, Jan 24, 2015 . 2008 International prostar cummins isx 1 200 000 km , started getting the VGT Code. Took it to my local trusted Mechanic , he replaced the actuator.

Why is the VGT actuator code 2636 inoperable?

The VGT actuator code 2636 stated that the actuator was inoperable because of a message interruption through the J1939 which is how the engine ECU communicates to the actuator. We went through the troubleshooting steps using the Cummins Quickserve website and checked the wiring harness.

How to diagnose a VGT code problem?

To properly diagnose this, once the actuator is taken off the actuator arm on the turbo has to freely move or sweep by hand to ensure nothing is jammed inside the turbo. There is also a starting point the actuator arm has to be in during the calibration process when the actuator is installed.