A4 Sedan L4-1.8L Turbo (AEB) (1997)
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Replace throttle valve control module -J338-.
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Carry out adaptation of throttle valve control module to ECM.
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Check readiness code. If Diagnostic Trouble Code (DTC) memory has been erased, or ECM was disconnected, generate new readiness code.
Evaluating Display Group 3
Checking wiring
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Connect VAG 1598/22 test box to ECM harness connector.
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Connect multimeter US 1119 (Fluke 83 or equivalent), using adapter cables from VW 1594 connector test kit.
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Measure resistance to check for short circuit between test box sockets 2 (Ground) and 75 (signal wire).
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Test box sockets 2 and 75
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Specified value: Infinity Ohms
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Switch multimeter to voltage (20 VDC) measuring range.
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Switch ignition on.
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Check wiring for short circuit to B+.
Note voltage reading if applicable (if not 0 volts).
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Switch ignition off.
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Continue test, depending on whether or not voltage was measured .
Continuation (with measured voltage)
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Disconnect 8-pin harness connector from throttle valve control module -J338-.
If measured voltage was approx. 5 volts:
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Connect multimeter US 1119 (Fluke 83 or equivalent), using adapter cables from VW 1594 connector test kit.
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Measure resistance to check for short circuit between test box sockets 62 (power supply) and 75 (signal wire).
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Test box sockets 62 and 75
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Specified value: Infinity Ohms
If measured voltage was approx. battery positive voltage (B+):
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Check wiring at 8-pin connector, terminal 5 for short circuit to battery B+.
Continuation (with no measured voltage)