Passat Syncro Wagon V6-2.8L (ATQ) (2000)
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Connect VAG 1598/31 test box to control module wiring harness. Engine Control Module (ECM) is not connected.
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Check wire connection of terminal 2 of appropriate connector of Heated Oxygen Sensor (HO2S) for continuity to test box.
Specification: max. 1.5 Ohms
Connector to Oxygen Sensor (O2S)
VAG 1598/31 test box socket
Behind Three Way Catalytic Converter
(TWC) -G130-, bank 1 terminal
2
63
Connector to Oxygen Sensor (O2S)
VAG 1598/31 test box socket
Behind Three Way Catalytic Converter
(TWC) -G130-, bank 2 terminal
2
6
If expected value is not obtained:
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Connect together sockets 62 + 65 of test box using auxiliary wires from VAG 1594. Transfer Fuel Pump (FP) must be running.
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Connect multimeter to terminals 1 + 2 of appropriate connector to make voltage measurement.
Specification: at least 11.5 V
If there is no voltage:
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Switch ignition off.
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Check wire connection from terminal 1 to Fuel Pump (FP) relay (J17) (see wiring diagram).
If voltage supply and wires are in order:
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Replace Engine Control Module (ECM).
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Read readiness code. If DTC memory was erased or Engine Control Module (ECM) was disconnected from continuous B+ supply, readiness code
must be re-generated. See: Testing and Inspection/Monitors, Trips, Drive Cycles and Readiness Codes