ECO mode AUDI A4 1999 B5 / 1.G AWM Engine Motronic Injection System Servicing Workshop Manual

24-53
Component location Overview of component
locations Page 24
-5
Voltage is supplied to the Fuel Pump (FP) and
several components of the injection system via
the Fuel Pump (FP) relay -J17-.
Engine must be turning for Fuel Pump (FP) relay
-J17- to close. This means that the relay does
not receive Ground (GND) (via ECM) until the
ECM recognizes RPM signals.

Test requirement:

Battery voltage at least 12.7 V

Function test of Fuel Pump (FP) relay

- Remove driver-side storage compartment.

Repair Manual, Body Interior, Repair Group
68


- Connect VAS5051 tester Page 01
-7 and
select vehicle system "01 - Engine electronics".
Ignition must remain switched on for this.

-
Initiate output Diagnostic Test Mode (DTM)
Page 01
-51
and activate Evaporative Emission
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