A4 Quattro Cabriolet V6-3.0L (BGN) (2005)
-
Connect multimeter between terminals C and D of sensor to measure resistance.
Range A shows resistance values for temperature range 0 to 50 degrees C and range B shows the values for temperature range 50 to 100 degrees C.
Sample readings:
-
30 degrees C corresponds to a resistance of 1500 to 2000 Ohms
-
80 degrees C corresponds to a resistance of 275 to 375 Ohms
If specified value is not attained:
-
Replace engine coolant temperature sensor.
If specified value is attained:
-
Connect test box VAG1598/31 to wiring harness for engine control module; do not connect engine control module. See: Powertrain
Management/Computers and Control Systems/Testing and Inspection/Scan Tool Testing and Procedures/Scan Tool Testing/With Generic Scan
Tool/Wiring and Component Check With Test Box VAG 1598/31
-
Check for open circuit and short to positive or ground in following wiring connections:
Connector
Test box VAG1598/31
terminal
Socket
3
108
4 (signal)
93