audi Workshop Repair Guides

Audi Workshop Service and Repair Manuals

With Manufacturer's Scan Tool|Page 5775 > < With Manufacturer's Scan Tool|Page 5773
Page 5
background image

1

Engine ground

2

Engine ground

-

Specified value: approx. battery voltage.

If specified value is not attained:

-

Check wiring connections.

Checking actuation

-

Connect multimeter as follows to measure voltage.

Relay carrier in electronics box,

Measure to

plenum chamber, position 2
terminal

4

Battery positive

-

Switch ignition on.
-

Specified value: approx. battery voltage.

If specified value is not attained:

-

Switch ignition off.

-

Connect test box VAG 1598/31 to wiring harness for engine control module; do not connect engine control module. See: Testing and
Inspection/Scan Tool Testing and Procedures/Scan Tool Testing/With Manufacturer's Scan Tool/Scan Tool Connecting and Initial Checks/Wiring
and Component Testing Using VAG1598/31 Test Box

-

Check for open circuit and short to positive or ground in following wiring connection:

Relay carrier in electronics box,

Test box VAG

plenum chamber, position 2

1598/31

terminal

Socket

4

23

-

Repair any open/short circuit as necessary.

With Manufacturer's Scan Tool|Page 5775 > < With Manufacturer's Scan Tool|Page 5773