A4 Quattro Sedan L4-1.8L Turbo (AEB) (1998)
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Switch ignition off.
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Connect VAG 1598/22 test box to ECM harness connector. Refer to "Scan Tool Testing/Scan Tool Connecting and Initial Checks/Connecting
VAG 1598/22 Test Box" See: Computers and Control Systems/Testing and Inspection
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Connect multimeter US1119 (Fluke 83 or similar) and check resistance between test box sockets 67 and 69.
Specified value: max. 5.0 Ohms
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Open throttle slowly.
Specified value: Infinity Ohms
If resistance is NOT OK:
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Disconnect 8-pin harness connector for throttle valve control module -J338-.
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Check wiring for open circuit between ECM/test box and 8-pin harness connector.
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Connector terminal 3 to ECM/test box socket 69
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Connector terminal 7 to ECM/test box socket 67
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Specified value: max. 1.5 Ohms
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Check wiring for short circuit between ECM/test box and 8-pin harness connector.
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Connector terminal 7 to ECM/test box socket 69
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Specified value: Infinity Ohms
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Reconnect throttle valve control module harness connector.
If wiring is OK:
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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.
Refer to "Monitors, Trips and/or Drive Cycle/Displaying Readiness Code" See: Computers and Control Systems/Testing and Inspection
Refer to "Monitors, Trips and/or Drive Cycle/Generating Readiness Code" See: Computers and Control Systems/Testing and Inspection