A4 Quattro Sedan L4-1.8L Turbo (AEB) (1998)
Throttle Valve Control Module: Testing and Inspection
Throttle Valve Control Module Power Supply, Checking
Throttle Valve Control Module Power Supply, Checking
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Disconnect 8-pin harness connector from throttle valve control module -J338-.
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Connect multimeter US 1119 (Fluke 83 or equivalent) between harness connector terminals using adapter cables from VW 1594 connector test kit.
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Switch ignition on, and check voltage. Specified values:
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Connector terminals 3 and 7 (Ground): 9.0 - 14.5 volts
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Connector terminals 4 and 7 (Ground): 4.0 - 6.0 volts
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Switch ignition off.
If voltage is NOT OK:
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Connect VAG 1598/22 test box. Refer to "Scan Tool Testing/Scan Tool Connecting and Initial Checks/Connecting VAG 1598/22 Test Box" See:
Powertrain Management/Computers and Control Systems/Testing and Inspection
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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 4 to ECM/test box socket 62
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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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Connector terminal 7 to ECM/test box socket 62
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Connector terminal 4 to ECM/test box socket 67
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Specified value: Infinity Ohms
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Reconnect throttle valve control module harness connector.