audi Workshop Repair Guides

Audi Workshop Service and Repair Manuals

Air Injection Vacuum Control Solenoid Valve|Testing and Inspection|Page 7358 > < Vehicle Speed Sensor|Testing and Inspection|Page 7352
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Air Injection Vacuum Control Solenoid Valve: Testing and Inspection

Secondary Air Injection Solenoid Valve, Checking

Special tools, testers and auxiliary items required

‹› Multimeter.

‹› Wiring diagram.

Test requirements

‹› The Engine Component Power Supply Relay (J757) OK.

‹› The fuel filter OK.

‹› The parking brake engaged.

‹› The battery voltage at least 12.5 V.

‹› The selector lever of automatic transmission in position "P" or " N".

‹› All electrical consumers switched off (radiator fan must NOT run during test).

‹› A/C switched off.

‹› The fuel tank at least 1/4 filled.

‹› The ignition switched off.

Procedure

-

Disconnect the Secondary Air Injection (AIR) Solenoid Valve (N112) electrical harness connector - 4 -. 

Checking internal resistance 

-

Using a Multimeter , check the Secondary Air Injection (AIR) Solenoid Valve (N112) terminals for resistance

Air Injection Vacuum Control Solenoid Valve|Testing and Inspection|Page 7358 > < Vehicle Speed Sensor|Testing and Inspection|Page 7352