Required Test Equipment

EQUIPMENT REQUIRED FOR DME TESTING:

- Diagnostics tester 9288 with connecting leads


- 1 oscilloscope approved by Porsche


- 1 digital display multimeter with an internal resistance of at least 50 kW


- 1 Bosch L-Jetronic test lead, Bosch No. 1684 463 093 (check lead for correct polarity at plugs).


- 2 control unit plug test leads (shop-made) with 2 tab connectors No. 17.457.2 fitted to avoid damage to the plug terminals in the control unit plug during testing.


- 2 adapter test leads, consisting of: 4 plug connectors N 017.483.1 with 2 leads approx. 150 mm long, soldered.


- 1 three-pin test lead (e.g. VAG 1501).

- 2 control unit plug test leads (shop-made) with 4 tab connectors N 17.457.2.

CAUTION: The test leads must always be used for the tests!

All sender and ignition timing signals of Porsche vehicles can be checked with the engine testers recommended by Porsche. Since instructions for connection of testers on a car will differ depending on the equipment manufacturer, these instructions must always be followed to ensure correct tester connection.


The following signals can be checked with the oscilloscope:


- Engine speed


- Vehicle speed


- ti (injection time)


- Idle stabilizer


- Hall signal


- Tank venting signal


- Note for USA: If a fault that affects exhaust gas composition is detected by the Check Engine lamp and is read out, repair is possible with standard workshop tools.








Information on Special Tool test adapter 9543.
The test adapter has to be used when testing electrical wires, e.g. at the control unit plug. The test adapter protects the plug terminals and facilitates locating the individual pins.