Q7 Quattro V6-3.6L (BHK) (2007)
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Switch off ignition.
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Connect Test Box V.A.G 1598/42 to wiring harness with adapter lead V.A.G 1598/39-1 or adapter lead V.A.G 1598/39-2. Clamp test box Ground
(GND) clip to battery negative terminal. The procedure will indicate whether the engine control module is to be connected to the test box or not.
CAUTION:
Risk of destroying electrical components with measuring equipment.
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Before connecting test leads, switch on respective measuring range and observe test conditions.
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Check the following wire connection for open circuit and short circuit to Ground (GND) and B+:
Harness connector Terminal
V.A.G 1598/42 Bushing
-2-
3.6L: B 8
4.2L: B 10
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Repair wiring open circuit or short circuit according to wiring diagram.
If no malfunction is found, but leak diagnosis pump is not functional during output diagnostic test mode:
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Replace Leak Detection Pump (LDP) V144.
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Observe procedures for after re-connecting engine control module (ECM).
Checking input wiring
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Switch off ignition.
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Connect Test Box V.A.G 1598/42 to wiring harness with adapter lead V.A.G 1598/39-1 or adapter lead V.A.G 1598/39-2. Clamp test box Ground
(GND) clip to battery negative terminal. The procedure will indicate whether engine control module is to be connected to test box or not.
CAUTION:
Risk of destroying electrical components with measuring equipment.