Beetle L4-2.0L (AEG) (2000)
Vehicles with engine code BDC
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Measure resistance between terminals 2 + 3 of diagnostic pump. Specified value: 17.5...19.5 Ohms
Continuation for all vehicles
If specified values are not obtained:
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Replace Leak Detection Pump (LDP) -V144-, item 1
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Erase DTC memory of Engine Control Module (ECM), 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. See: Computers and Control Systems/Testing and
Inspection/Reading and Clearing Diagnostic Trouble Codes/Scan Tool Connecting/With Generic Scan Tool/Test Box, Connecting For Wiring
Test
Vehicles with engine code AEG
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Check wires between test box and 3-pin connector for open circuits according to wiring diagram. Terminal 1 + socket 37, Terminal 2 + socket 16:
Wire resistance: max. 1.5 Ohms
Vehicles with engine code AVH, AZG, BDC
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Check wires between test box and 3-pin connector for open circuits according to wiring diagram. Terminal 1 + socket 80, Terminal 2 + socket 25:
Wire resistance: max. 1.5 Ohms
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-.