audi Workshop Repair Guides

Audi Workshop Service and Repair Manuals

With Manufacturer's Scan Tool|Page 4872 > < With Manufacturer's Scan Tool|Page 4870
Page 5
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Connect multimeter for voltage measurement as follows.

Relay carrier in E-box, plenum

Measure to

chamber, position 2
Terminal

1

Engine Ground(GND)

2

Engine Ground(GND)

-

Specified value: approx. battery voltage

If specified value is not obtained:

-

Check wire connections for open circuit according to wiring diagram:
-

Specified value: Wire resistance max 1.5 Ohm

Checking activation

-

Connect multimeter for voltage measurement as follows.

Relay carrier in E-box, plenum

Measure to

chamber, position 2
Terminal

4

B+

-

Switch ignition on.
-

Specified value: approx. battery voltage

-

Switch ignition off.

If specified value is not obtained:

-

Connect test box to wiring harness of Engine Control Module (ECM); ECM is not connected. See: Computers and Control Systems/Testing and
Inspection/Reading and Clearing Diagnostic Trouble Codes/Scan Tool Connecting/With Generic Scan Tool/Text Box, Connecting For Wiring
Test

With Manufacturer's Scan Tool|Page 4872 > < With Manufacturer's Scan Tool|Page 4870