checking oil AUDI A6 1998 C5 / 2.G ATQ Engine Motronic Injection System Servicing Workshop Manual

24-46

Test requirement:

Fuel pressure OK, checking Page 24
-30
.

Test sequence

- Remove fuel distributor including fuel injectors
from intake manifold Page 24
-43
. Fuel lines
remain connected.

- Connect VAG1598/31 test box at wiring harness
to ECM, do not connect ECM Page 24
-17
.

- Bridge terminals 1 and 65 at test box using
adapter cables from VAG1594A connector test
kit (this step supplies Ground -GND- to one side
of relay coil for Fuel Pump -FP- relay).

Note:
Fuel Pump (FP) relay is supplied with B+ via the
central electric (terminal 30). Fuel Pump (FP)
relay receives minus via the cable bridge in test
box. The Fuel Pump (FP) is now running
constantly.
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