Passat L4-1.8L Turbo (AWM) (2004)
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Press -> button.
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Press buttons -0- and -6- to select "End data transfer" function 06. Press -Q- button to confirm input.
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Switch ignition off.
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Connect VAG 1598/31 adapter cable to control module wiring harness. Engine Control Module (ECM) is not connected.
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Measure resistance of throttle valve drive between test box sockets 117 + 118. Specification: 1 to 5 Ohms
If specified value is not obtained:
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Replace throttle valve control module -J338-.
If specified value is obtained:
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Check voltage supply of throttle valve control module and wiring to control module.
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Check Throttle Position (TP) sensor and sensor 2 for accelerator pedal position.
If voltage supply and wires are OK:
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Replace Engine Control Module (ECM).
Checking voltage supply and wiring to control module
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Disconnect 6-pin connector -2- at the throttle valve control module.