A6 Quattro Sedan V6-3.0L (AVK) (2002)
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Switch ignition off.
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Reconnect relay.
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Connect test box VAG 1598/31 to wiring harness for engine control module; do not connect engine control module. See: Computers and Control
Systems/Testing and Inspection/Scan Tool Testing and Procedures/Scan Tool Testing/Scan Tool Connecting and Initial Checks/Wiring and
Component Testing Using VAG1598/31 Test Box
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Bridge terminals 1 and 65 at test box with leads from adapter kit VAG 1594A.
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Switch ignition on.
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Fuel pump relay (on central electronics in the driver's footwell on the left, position 4) must trigger.
If the relay responds now, but not during output DTM:
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Replace engine control module.
If the relay does not respond:
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Switch ignition off.
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Disconnect cable link.
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Disconnect fuel pump relay.
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Check for open circuit and short to positive or Ground in following wiring connection:
Central electronics in driver's
Test box
footwell on left, position 4
VAG 1598/31
terminal
Socket
16
65
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Repair any open/short circuit as necessary.
If no DTC is found:
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Replace fuel pump (FP) relay -J17-.
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Reconnect engine control module.