audi Workshop Repair Guides

Audi Workshop Service and Repair Manuals

Not Available For Manufacturer's Scan Tool|Page 690 > < Not Available For Manufacturer's Scan Tool|Page 688
Page 4
background image

-

Specified value: Wire resistance max 1.5 Ohms

-

Connect multimeter for voltage measurement as follows.

3-pin relay carrier,E-box

Measure to

plenum chamber, position 3
Terminal

4

Engine Ground (GND)

-

Operate starter briefly.
-

Specified value: approx. battery voltage

-

Switch ignition off.

If specified value is not obtained:

-

Check wire connection from Secondary Air Injection (AIR) Pump Relay -J299- (in 3-pin relay carrier, E-box plenum chamber) to Fuel Pump (FP)
relay via Fuse -S234- (in fuse holder, position 34) for open circuit according to wiring diagram.
-

Specified value: Wire resistance max 1.5 Ohms

Check activation of the Secondary Air Injection (AIR) pump relay

-

Remove Secondary Air Injection (AIR) pump relay -2-.

-

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

-

Check the following wire connection for open circuit according to wiring diagram:

Not Available For Manufacturer's Scan Tool|Page 690 > < Not Available For Manufacturer's Scan Tool|Page 688