S6 V8-4.2L (BBD) (2004)
Coolant Temperature Sensor/Switch (For Computer): Testing and Inspection
With Manufacturer's Scan Tool
Engine Coolant Temperature (ECT) sensor -G62-, checking
Installation location of engine coolant temperature sensor.
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Connect Vehicle Diagnostic, Testing and Information System VAS 5051 or V.A.G 1551 Scan Tool and select engine electronics control module 1
with "Address word" 01. For this purpose, engine must be running at idle speed.
Indicated on display
Rapid data transfer
HELP
Select function XX
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Press keys 0 and 8 for function "Read measured value block" and confirm entry with Q key.
Indicated on display
Read measured value block
Enter display group number XXX
-
Press keys 0, 0 and 4 for "display group number 4" and confirm entry with Q key.
Indicated on display
Read measured value block 4
->
1
2
3
4
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Check specified value for engine coolant temperature sensor in display zone 3
Display Group 4
Checking wiring
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Switch ignition off.
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Unplug connector from sensor.
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Connect test box VAG 1598/31 to wiring harness for engine control module; do not connect engine control module. See: Testing and
Inspection/Scan Tool Testing and Procedures/Scan Tool Testing/With Manufacturer's Scan Tool/Scan Tool Connecting and Initial
Checks/Connecting VAG 1598/31 Test Box
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Check wiring from 4 pin connector ...
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... to engine control module for checking for open circuit and short to positive or Ground.