Full Product Manual

3
Scan Tool Steering Angle Sensor Reset
There are many options for scan tools to reset SASs. Some tools are even
integrated into an alignment system. But, most tools recommend that the
calibration be performed on a level surface. Also, it is a good idea to perform
a lock-to-lock turn to complete the calibration.
DPF
A Diesel Particulate Filter, often referred to as the DPF, is a device
designed and integrated into the Diesel Engine Exhaust Systems to trap and
remove Diesel Particulate Matter or Soot from the exhaust gasses of the
diesel engine. A DPF works in conjunction with the oxidation catalyst and
EGR valve to remove a majority of the NOx, particulate matter and unburned
hydrocarbons from burned diesel fuel. The result of DPF is greater economy,
improved smoothness and a reduction of harmful emissions.
The soot trapped in DPF will partially block your DPF causing the DPF/CAT
light to illuminate on the dash (normally when 45% blockage is reached) at
which point regeneration is required to get the DPF back in to safety zone.
DPF Light ON
When the DPF light appears on the dash intermittently, this means there is a
partial blockage in your DPF and a regeneration process is required. If you
ignore it and keep on driving, eventually it will stay on permanently and in
most severe cases brings on the Engine Management Light and even the
Coil Light. If this happens, you will lose all power and the vehicle will fall into
“Limp Mode”.
Regeneration Process
Regeneration is the DPF’s way to clear the blockage through continuously
burning of the soot at higher temperatures and allowing the now harmless
produce to escape through the exhaust system. There are two types of
regeneration processes for vehicles.
Passive Regeneration
Passive regeneration is an automated regeneration which often occurs on
drives where there is prolonged high exhaust temperatures, for example, on
motorway-type runs. This needs no intervention from the engine control unit.