audi Workshop Repair Guides

Audi Workshop Service and Repair Manuals

Coolant Temperature Sensor/Switch (For Computer)|Testing and Inspection|Page 2854 > < Coolant Temperature Sensor/Switch (For Computer)|Testing and Inspection
Page 2
background image

Read Measuring Value Block 4

 ->

1

2

3

4

-

Check display in display field 3.

Display Group 4

If no realistic display occurs in display field 3:

NOTE:  Do not confuse the coolant temperature sensor which transmits its signal to the engine control module with the coolant temperature sensor,
which sends its signal to the A/C.

-

Disconnect connector from coolant temperature sensor.

Coolant temperature sensor with square connector

-

Connect multimeter between sensor terminals 1 and 3 for a resistance measurement.

Coolant temperature sensor with oval connector

-

Connect multimeter between sensor terminals 3 and 4 for a resistance measurement.

Coolant Temperature Sensor/Switch (For Computer)|Testing and Inspection|Page 2854 > < Coolant Temperature Sensor/Switch (For Computer)|Testing and Inspection