Passat V6-2.8L (ATQ) (2004)
If specified values are not obtained:
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Replace Leak Detection Pump (LDP) -V144.
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Erase DTC memory of Engine Control Module (ECM). Diagnostic mode 4: Reset/erase diagnostic data. See: Computers and Control
Systems/Testing and Inspection/Scan Tool Testing and Procedures/With Generic Scan Tool/Diagnostic Mode 4: Reset/Erase Diagnostic Data
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Generate readiness code. See: Computers and Control Systems/Testing and Inspection/Monitors, Trips, Drive Cycles and Readiness Codes
If specified values are obtained:
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Connect test box to control module wiring harness. connect test box for wiring test.
Vehicles with engine code AHA
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Check wires between test box and 3-pin connector for open circuit according to wiring diagram.
Terminal 1 + socket 37
Terminal 2 + socket 16
Wire resistance: max. 1.5 ohms
Vehicles with engine code ATQ
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Check wires between test box and 3-pin connector for open circuit according to wiring diagram.
Terminal 1 + socket 80
Terminal 2 + socket 25
Wire resistance: max. 1.5ohms
Continuation for all vehicles
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Also check wires for short circuit to each other, to vehicle Ground (GND) and to B+.
Specified value: Infinite ohms
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Check wire between 3-pin connector terminal 3 and the Fuel Pump (FP) Relay -J17- for open circuit according to wiring diagram.
Wire resistance: max. 1.5 ohms
If no malfunctions are found in wires:
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Replace Motronic Engine Control Module (ECM) -J220-.