Passat Sedan L4-2.0L (ABA) (1996)
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Connect VAG 1598/18 test box to ECM wiring harness.
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Switch ignition on.
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With throttle closed connect multimeter to measure resistance at test box sockets 27 and 53.
Specification: 3-200 Ohms
If the specification is not attained:
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Disconnect 8-pin connector from throttle valve control module -J338-.
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Repeat resistance measurements of throttle valve control module at terminals 1 + 2
Specification: 3-200 Ohms
If the specification is not attained:
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Replace throttle valve control module -J338-.
If the specification is attained:
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Check wiring between test box and 8-pin connector for open circuit according to wiring diagram.
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Terminal 1 and test box socket 27
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Terminal 2 and test box socket 53
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Terminal 7 and test box socket 33
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Terminal 8 and test box socket 62
Resistance: maximum 1.5 Ohms
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Check wiring at 8-pin connector for short circuit to each other according to wiring diagram.
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Terminal 1 and test box socket 53
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Terminal 1 and test box socket 62
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Terminal 1 and test box socket 33
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Terminal 2 and test box socket 33
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Terminal 2 and test box socket 62
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Terminal 7 and test box socket 62
Specification: Infinity Ohms
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Read the readiness code. If DTC memory has been erased, repair must be verified via appropriate display group See Readiness code, creating.
Refer to "On-Board Diagnostics II With VAG 1551". See: Powertrain Management/Computers and Control Systems/Testing and Inspection
Checking Throttle Position (TP) sensor
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Connect VAG 1551/1552 scan tool and select "Engine Electronics" address word 01. When doing this the ignition must be switched on but engine
not running. Refer to "On-Board Diagnostics II With VAG 1551". See: Powertrain Management/Computers and Control Systems/Testing and
Inspection
Indicated on display