A6 Quattro Sedan V6-2.8L (AHA) (1998)
Coolant Temperature Sensor (Gauge): Testing and Inspection
Engine Coolant Temperature (ECT) Gauge -G3-, Checking
If the engine coolant temperature gauge in the instrument cluster does not indicate a reading, first check whether the signal is received by the instrument
cluster.
-
Connect VAG1551/VAG1552 Scan Tool (ST) and press buttons -1- and -7- to insert "Instrument Cluster" address word 17 (with ignition switched
on).
Indicated on display
Rapid data transfer
Q
17 - Instrument Cluster
-
Press -Q- button to confirm input.
Indicated on display (after approximately 5 seconds)
460919930B C5-KOMBIINSTR. UN4D13->
Coding 07262 WSC 06812
-
Press button.
Indicated on display
Rapid data transfer
HELP
Select function XX
-
Press buttons -0- and -8- to select "Read Measuring Value Block" function 08.
Indicated on display
Rapid data transfer
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08 - Read Measuring Value Block
-
Press -Q- button to confirm input.
Indicated on display
Read Measuring Value Block
HELP
Input display group number XXX
-
Press buttons -0-, -0- and -3- to input display group number 003, and press -Q- button to confirm input.
Indicated on display (1-4 = display fields)
Read Measuring Value Block 3
->
1
2
3
4
If the engine coolant temperature is displayed in display field 1 on the scan tool, the instrument cluster is faulty and must be replaced. Removing
instrument cluster.
If the engine coolant temperature is not displayed in display field 1 on the scan tool:
-
Check the signal to the multi-pin connector for the instrument cluster.
-
Press button.
Indicated on display
Rapid data transfer
HELP
Select function XX
-
Press buttons -0- and -6- to select "End Output" function 06.
Indicated on display
Rapid data transfer
Q