A6 Quattro Sedan V6-2.7L Turbo (APB) (2000)
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The Secondary Air Injection (AIR) pump relay (in 3-socket relay carrier in the E-box, at left in plenum chamber, position 2) must engage and the
Secondary Air Injection (AIR) pump motor -V101- must run in intervals
A - If relay does not trigger:
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Check voltage supply of Secondary Air Injection (AIR) pump relay.
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Check activation of Secondary Air Injection (AIR) pump relay.
B - If relay triggers, but Secondary Air Injection (AIR) pump does not run:
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Check voltage supply of Secondary Air Injection (AIR) pump motor.
Checking voltage supply of Secondary Air Injection (AIR) pump relay
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Switch ignition off.
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Remove Secondary Air Injection (AIR) pump relay
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Connect multimeter for voltage measurement as follows.
3-socket relay carrier in E-box,
Measure to
plenum chamber, position 2
terminal
8
Engine Ground (GND)
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Specification: approx. battery voltage
If specified value is not obtained:
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Perform following tests marked with dots:
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Check fuse S130 (40 A) in 3-socket relay carrier in E-Box, plenum chamber, position 7.
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Check wire connection from battery + (terminal 30) to Secondary Air Injection (AIR) pump relay -J299- (in 3-socket relay carrier in E-Box,
plenum chamber, position 2) for open circuit.
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Connect multimeter for voltage measurement as follows.