Golf GTI V6-2792cc 2.8L DOHC (AAA) SFI (1998)
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Disconnect 8-pin connector from throttle valve control module -J338-.
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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: max. 1.5 ohms.
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Check wiring at 8-pin connector for short circuit to one another 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: infinite ohms.
If no wiring malfunction is detected:
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Replace throttle valve control module -J338-.
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Read the readiness code. If DTC memory has been erased, verify repair via appropriate display group See Readiness code, creating. See:
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. See: Computers and Control Systems/Testing and Inspection
When doing this the ignition must be switched on but engine not running.
Indicated on display
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Press buttons -0- and -8- to select "Read Measuring Value Block" function 08 and press -Q- button to confirm input.
Indicated on display
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Press buttons -0-, -0- and -3- to input display group 003 and press -Q- button to confirm input.
Indicated on display (1-4 = Display fields)
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Press -> button.
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Check the TP sensor specification (display field 3).