audi Workshop Repair Guides

Audi Workshop Service and Repair Manuals

Combination Valve For Secondary Air Injection (AIR), Checking Function and For Proper Seal|Page 5086 > < Combination Valve For Secondary Air Injection (AIR), Checking Function and For Proper Seal|Page 5084
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Valve must click

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Valve must open and close (can be tested by blowing into assisting hose)

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End function "03 - output Diagnostic Test Mode (DTM)" by pressing button.

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Select "06 - End Output".

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Switch ignition off.

If valve does not open or close properly:

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Replace Secondary Air Injection (AIR) Solenoid Valve -N112-.

If valve does not click during output Diagnostic Test Mode (DTM):

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Check internal resistance.

Checking internal resistance

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Disconnect electrical harness connector from Secondary Air Injection (AIR) Solenoid Valve -N112- - arrow -.

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Connect multimeter to valve for resistance measurement.
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Specified value: 19 to 27

If specified value is not obtained:

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Replace Secondary Air Injection (AIR) Solenoid Valve -N112-.

If specified value is obtained:

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Check voltage supply.

Checking voltage supply

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Fuse for Secondary Air Injection (AIR) solenoid valve OK Electrical Wiring Diagrams, Troubleshooting Component Locations

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Fuel Pump (FP) Relay -J17- OK

NOTE:  Voltage is supplied to the Secondary Air Injection (AIR) Solenoid Valve -N112- via the Fuel Pump (FP) Relay -J17-.

Combination Valve For Secondary Air Injection (AIR), Checking Function and For Proper Seal|Page 5086 > < Combination Valve For Secondary Air Injection (AIR), Checking Function and For Proper Seal|Page 5084