User manual

TDI Timing Checker ’Plug-In’ for VCDS - Section 33-A
The TDI Timing Checker is automatically installed when you install VCDS.
Note: This ONLY applies to VE Engines and DOES NOT
apply to PD (unit injectors) or CR (common rail) engines
This plug-in allows you to check the injection timing setting on a VE TDI engine (NOT PD or
CR varieties). This needs to be done after you change the timing belt and should be done
every once in a while to keep tabs on belt stretch and pump/pulley alignment. The standard
procedure for this is to have the engine idling at operating temperature (coolant temp
>85*C), go to measuring block 000 for the engine, switch to basic settings and report fields
#2 (injection timing) and #9 (fuel temperature) on a special graph.
This plug-in reports the timing on the graph in real-time, so you don't need to have your
manual sitting on your lap at the same time. The application also gives you a comment in
the "result" field, that will tell you if all the conditions are fulfilled to check the timing (some
people don't realize you need to have the engine running, for instance...) and if your timing
is within spec or not.
The history of the last 100 samples is displayed as a "cloud" of points. From the size and
shape of this "cloud" you can see how much "jumping around" your engine is doing, and
your average timing is probably right in the middle of the cloud.