fuses AUDI A4 1999 B5 / 1.G AFC Engine Fuel Pump Relay And Relay Triggering Checking Workshop Manual

24-24


Fuel pump relay and relay
triggering, checking

The fuel pump relay is located at position 6 of the central electrical panel
under the left side of the instrument panel.
Checking fuel pump relay -J17-
- Remove shelf in left front footwell.

- Remove fuses 28, 29 and 34 from fuse relay panel.
- Connect VAG 1527B voltage tester between Ground (GND) and either
of the fuse 28 terminals using jumper wires from the connector test kit
VW 1594.
- Briefly operate starter.
Fuel pump relay must be felt and heard ("click") Voltage tester must light up
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If voltage tester does not light up, check wiring as
follows:

If the specified value is not obtained:
If the wiring is OK and the voltage tester does not light up:
If the fuel pump relay triggering and the wiring is OK: - Connect VAG 1598/19 test box to ECM harness connector (ECM is left
disconnected) Repair Group 01. -
Switch multimeter (Fluke 83 or equivalent) to measure resistance ( )
and check for continuity between relay socket 29 and test box socket
A5 using jumper wires from connector test kit VW 1594.
Specified value: max. 1 - Check for open circuit using wiring diagram, and correct as necessary.
- Replace ECM Repair Group 01.- Replace the fuel pump relay.
- Re-insert the removed fuses.
Pa
ge 6 of 6 Fuel
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11/22/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
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pair&id=AUDI.B5.FU01.24.5