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Home >> Audi >> 2017 >> RS 3 >> Repair and Diagnosis >> External Pages >> Different car >> Section 36 (GENERIC SCAN TOOL [CNTA, CNTC, CNSB] (5 Of 5) -- (A3 SEDAN)) >> Generic Scan Tool >> Diagnosis And Testing >> Diagnostic Procedures >> Secondary Air Injection Pump Relay - J299- / Secondary Air Injection Pump Motor - V101-, Checking >> General Description

Secondary Air Injection Pump Relay - J299- / Secondary Air Injection Pump Motor - V101-, Checking: General Description

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The secondary air injection system sends air into the exhaust using passages in the cylinder head. This extra air injection takes place using the Secondary Air Injection Pump Motor -V101- that is powered by the Secondary Air Injection Pump Relay -J299- on a cold-start of the engine for about 45 - 100 s. and serves to quickly heat the catalytic converter(s) for improved emissions.