fuse AUDI A4 1997 B5 / 1.G AHA Engine Multiport Fuel Injection And Ignition System User Guide
Page 129 of 166
24-101
If the wiring is OK, but the LED test light does not
light up:
- Replace Motronic ECM -J220- page 01
-68
.
- Carry out adaptation of throttle valve control
module to ECM page 24
-150
.
- Check readiness code page 01
-70
. If
Diagnostic Trouble Code (DTC) memory has
been erased, or ECM was disconnected,
generate new readiness code page 01
-73
.
If the wiring is OK, and the signal to the fuel
pump relay is OK:
- Replace fuel pump relay -J17-.
- Reinstall fuses.
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Page 131 of 166
Fuse for fuel injectors OK
Engine speed (RPM) sensor OK
Fuel pump relay OK
Pa
ge 131 of 166 Motronic Multi
port Fuel In
jection
(MFI
) and i
gnition s
ystem
11/23/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU03.24.1
Page 158 of 166
24-121
Checking EVAP canister purge regulator
valve voltage supply
Test conditions
Fuse for EVAP canister purge regulator
valve OK
- Disconnect harness connector from EVAP
canister purge regulator valve.
If LED test light does not light:
If wiring is OK: - Connect VAG1527B LED voltage tester between connector terminal 1
(B+) and engine Ground.
- Operate starter motor.
Specified value: LED must light up
- Check wiring for open circuit between connector terminal 1 and fuse,
according to wiring diagram; repair if necessary.
Specified value: 1.0 max.- Check fuel pump relay page 24
-95
.
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Page 162 of 166
24-125
Voltage supply, checking
If LED tester does not light: - Disconnect harness connector for LDP -V144-.
- Connect VAG1527B LED voltage tester between connector terminal 3
(B+) and engine Ground.
- Start engine and run engine at idle.
LED must light up.
- Check fuse for LDP -V144-.
- Check wiring for open circuit between terminal 3 and fuse, according to
wiring diagram.
Specified value: max. 0.5 .- Check fuel pump relay and signal to relay page 24
-95
.
Pa
ge 162 of 166 Motronic Multi
port Fuel In
jection
(MFI
) and i
gnition s
ystem
11/23/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU03.24.1