ignition AUDI A4 1999 B5 / 1.G AEB Engine Turbocharger Boost Control And Checking

24-134

Checking wiring

- Disconnect harness connector from Barometric
Pressure (BARO) sensor.

- Switch ignition on.

If voltage is NOT OK: - Connect multimeter US 1119 (Fluke 83 or equivalent) and check
voltage between connector terminals 1 and 3 (Ground) as well as 2
and 3 (Ground), using adapter cables from VW 1594 connector test kit.
Specified value for both: 4.5-5.5 volts
- Switch ignition off.
- Connect VAG 1598/22 test box to ECM harness connector Page 01
-
56
.

- Check wiring for open circuit between ECM/test box and 3-pin harness
connector, according to wiring diagram.

Connector terminal 1 to ECM/test box socket 61
Connector terminal 2 to ECM/test box socket 62
Connector terminal 3 to ECM/test box socket 67
Specified value: max. 1.5
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