audi Workshop Repair Guides

Audi Workshop Service and Repair Manuals

With Manufacturer's Scan Tool|Page 7603 > < With Manufacturer's Scan Tool|Page 7601
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Connect e.g. V.A.G 1527 B voltage tester as follows:

Harness connector

Measure to

Terminal

2

B+

4

B+

-

LED must light up.

If LED does not light up:

-

Check the wire connections for open circuit.
-

Specified value: Wire resistance max 1.5 Ohms

-

If necessary, repair wire connection.

If LED lights up:

Checking voltage supply

-

Connect multimeter for voltage measurement as follows:

Harness connector

Measure to

Terminal

1

Engine Ground (GND)

-

Switch ignition on.
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Specified value: approx. battery voltage

-

Switch ignition off.

If specified value is obtained:

-

Check activation of power output stages.

If specified value is not obtained:

With Manufacturer's Scan Tool|Page 7603 > < With Manufacturer's Scan Tool|Page 7601