S6 V8-4.2L (BBD) (2004)
- Connect multimeter for voltage measurement as follows:
Harness connector
Measure to
Terminal
2
B+
-
Operate starter briefly.
-
Specified value: approx. battery voltage
-
Switch ignition off.
If specified value is not obtained:
-
Connect test box to wiring harness of Engine Control Module (ECM); ECM is not connected. See: Computers and Control Systems/Testing and
Inspection/Reading and Clearing Diagnostic Trouble Codes/Scan Tool Connecting/With Generic Scan Tool/Test Box, Connecting For Wiring
Test
-
Check the following wire connection for open circuit according to wiring diagram:
Harness connector
Measure to
Terminal
2
64
-
Specified value: Wire resistance max 1.5 Ohm
-
Also check the wire for short circuit to B+ and Ground (GND).
-
Specified value: Infinity ohm (no continuity)
-
If necessary, repair wire connection.
If no malfunctions are found in wires:
-
Replace Engine Control Module (ECM).
Final procedures
After repair work, the following work steps must be performed in the mentioned sequence:
1
-
Check DTC memory "Mode 3: Check DTC memory". See: Computers and Control Systems/Testing and Inspection/Scan Tool Testing and
Procedures/Scan Tool Testing/With Generic Scan Tool/Diagnostic Mode 3: Check DTC Memory
2
-
If necessary, erase DTC memory "Mode 4: Reset/erase diagnostic data". See: Computers and Control Systems/Testing and Inspection/Scan
Tool Testing and Procedures/Scan Tool Testing/With Generic Scan Tool/Diagnostic Mode 4: Reset/Erase Diagnostic Data
3
-
Generate readiness code. See: Computers and Control Systems/Testing and Inspection/Monitors, Trips, Drive Cycles and Readiness
Codes/Audi Drive Cycle/Readiness Code/With Generic Scan Tool/Readiness Code, Generating
-
End diagnosis and switch ignition off.