S4 V8-4.2L (BHF) (2004)
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Connect multimeter for voltage measurement as follows.
Harness connector Terminal
Specified value
2 + Ground(GND)
about 5 V
2 + 6
about 5 V
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Switch ignition off.
If specified values are not obtained:
Checking wire connections
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Connect test box to wiring harness of Engine Control Module (ECM), ECM is not connected. See: Testing and Inspection/Reading and Clearing
Diagnostic Trouble Codes/Scan Tool Connecting/Test Box, Connecting For Wiring and Component Test
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Check the following wire connections for open circuit according to wiring diagram:
Harness connector Terminal
Test box Socket
1
92
2
83
3
117
4
84
5
118
6
91
Specified value: Wire resistance max 1.5 Ohms
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Check wires for short circuit to each other as well as to B+ and Ground (GND).
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Specified value: Infinite Ohms (no continuity)
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If necessary, repair wire connection.
If no malfunction is detected in the wiring and if the voltage supply was OK:
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Replace throttle valve control module
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After replacing the throttle valve control module, it must be adapted. For this purpose switch on ignition for at least 30 seconds without starting
engine or depressing accelerator pedal.
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Switch ignition off.
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Engine Control Module (ECM) now requires approx. 3 seconds to store the learned value. At this time, the ignition must not be switched on
again
Assembly is performed in the reverse order of removal, note the following: