Eurovan V6-2.8L (AXK) (2001)
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Use adapter cables from VAG1594 to connect multimeter to terminals 3 + 4 (Motronic ECM connector) for voltage measurement.
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Start engine and measure primary voltage. Specification: 0.40 to 0.50 volts
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Switch ignition off.
If specified value is not obtained:
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Check wires between test box and 4-pin connector to Motronic control module for open circuit according to wiring diagram.
Terminal 3 + socket 68
Terminal 4 + socket 69
Wire resistance: max: 1.5 Ohms
If specified value is obtained:
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Replace oxygen sensor behind Three Way Catalytic (TWC) Converter.
If no malfunctions are found in wires:
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Replace Engine Control Module (ECM).
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Check DTC memory, repair any malfunctions and then erase DTC memory.
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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: Powertrain Management/Computers and Control Systems/Testing and Inspection/Monitors, Trips, Drive Cycles and
Readiness Codes See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Monitors, Trips, Drive Cycles and
Readiness Codes
Heater Check
Oxygen Sensor Heater For Heated Oxygen Sensor (HO2S) After Three Way Catalytic Converter (TWC), Checking
NOTE:
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Vehicle must be raised before connector to oxygen sensor is accessible.
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When servicing terminals in harness connector of Heated Oxygen Sensor (HO2S), use only gold-plated terminals.