GTI V6-2792cc 2.8L DOHC (AAA) (1996)
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Connect VAG 1598/18 test box to ECM wiring harness (arrow).
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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 3 and test box socket 10.
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Terminal 4 and test box socket 41.
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Terminal 7 and test box socket 33.
Resistance: max. 1.5 ohms.
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Check wiring at 8-pin connector for short circuit to each other.
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Terminal 7 and test box socket 10.
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Terminal 7 and test box socket 41.
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Terminal 4 and test box socket 33.
Specification: infinite ohms.
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Reconnect connector.
If no wiring malfunction is detected:
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Replace Engine Control Module (ECM) -J220-.
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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 Closed Throttle Position (CTP) switch
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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 engine must be running at idle speed.
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.