Passat Sedan V6-2792cc 2.8L DOHC (AAA) SFI (1997)
Check wiring:
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Connect VAG 1598/18 test box to ECM wiring harness (arrow).
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Connect multimeter using test leads from VW 1594 to measure resistance attest box sockets 01 and 40 and check wiring for short circuit to
Ground (GND).
Specification: infinite ohms.
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Set multimeter to voltage measurement range.
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Switch ignition on.
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Check wiring for short circuit to positive (B+), if necessary note voltage value.
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Switch ignition off.
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Disconnect 8-pin connector from throttle valve control module -J338-.
Continuation if voltage is present:
If voltage of about 5 volts was present:
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Connect multimeter using test leads from VW 1594 to measure resistance attest box sockets 40 and 41 and check wiring for short circuit to one
another.
Specification: infinite ohms.
If the voltage was approx. battery voltage: