S4 V8-4.2L (BHF) (2004)
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Check the following wire connection for open circuit according to wiring diagram:
3-fold relay carrier in
Test box Socket
E-box, plenum chamber,
position 3 Terminal
8
Engine Ground (GND)
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 malfunctions are found in wires:
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Replace Engine Control Module (ECM).
Assembly is performed in reverse order of removal, note the following:
Final procedures
After repair work, the following work steps must be performed in the mentioned sequence:
1. Check DTC memory see "Mode 3: Check DTC memory". See: Powertrain Management/Computers and Control Systems/Testing and
Inspection/Scan Tool Testing and Procedures/Mode 3: Check DTC Memory
2. If necessary, erase DTC memory see "Mode 4: Reset/erase diagnostic data". See: Powertrain Management/Computers and Control
Systems/Testing and Inspection/Scan Tool Testing and Procedures/Mode 4: Reset/Erase Diagnostic Data
3. Generate readiness code. See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Monitors, Trips, Drive Cycles
and Readiness Codes/Readiness Code, Generating