VemsAudiAan (2007-08-11 11:31:03)

A motronic55 install might save some time making a harness, but you must always verify the harness reasonably carefully.

This involves

Use this template for your measurements.


Documents and files to use


Sensor measurements

Measure sensor resistance against AANpin30.

Take note of the temperature. If the engine is stopped for hours, the coolant and MAT will be close to ambient temperature.

Injector and idle-air output measurements

Measure injector and idle air pins against AANpin37 (that is the flyback pin, same function as EC36pin23 in standard VEMS docs)


Grounds

Measure that grounds are strongly (max 0.1 Ohm) connected inside the VEMS ECU.

You can measure that most are connected in the harness, but at least AANpin30 (sensor ground) and AANpin... trigger ground are likely not connected.


Trigger

Measure trigger resistance against AANpin48.

HALL signal

This step assumes you successfully made all the above steps.


WBO2 on SSC5 male standard - applies to audi AAN and 3B (also to BMW):

WBO2 on SSC4 male standard - applies to audi AAN and 3B (also to BMW), but the SSC5 is used by default, unless SSC4 requested: