A4 Quattro Sedan V6-2.8L (ACK) (1997)
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Disconnect harness connector on fuel injector to be tested.
2-Pin Connector
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Connect VAG 1527B voltage tester between terminal 2 and battery positive voltage (B+) using jumper wires from connector test kit VW 1594.
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Operate starter briefly (the engine can also turn over).
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Operate starter for several seconds (OK for engine to turn).
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Specified Value: Voltage tester must flash.
If tester does not flash:
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Check wiring and connections between connector terminal 2 (for fuel injector being tested) and ECM as follows:
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Connect VAG 1598/19 test box to ECM harness connector.
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Check fuel injector 1 signal wire for continuity between harness connector terminal 2 and test box socket D1.
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Specified Value: max. 1 Ohm.
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Check fuel injector 2 signal wire for continuity between harness connector terminal 2 and test box socket D2.
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Specified Value: max. 1 Ohm.
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Check fuel injector 3 signal wire for continuity between harness connector terminal 2 and test box socket D4.
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Specified Value: max. 1 Ohm.
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Check fuel injector 4 signal wire for continuity between harness connector terminal 2 and test box socket D5.
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Specified Value: max. 1 Ohm.
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Check fuel injector 5 signal wire for continuity between harness connector terminal 2 and test box socket D6.
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Specified Value: max. 1 Ohm.
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Check fuel injector 6 signal wire for continuity between harness connector terminal 2 and test box socket D8.
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Specified Value: max. 1 Ohm.
If continuity is not obtained:
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Eliminate open or short circuit between terminal 2 of respective fuel injector connector, and ECM connector.