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Engine revs sender: testing > < Test process

Leon Mk2

Test condition
Test condition
l  The engine must be cold.
Function test of the sender:
–  Connect the -V.A.G. 1551- (-V.A.G. 1552-). Switch on the ignition and enter “address code” 01 to select the engine control unit. (Fault reader: Connecting and selecting the engine control unit → Chapter.)
   
The display reads:
–  Press 0 and 8 for the function “Read measurement value block” and press Q to confirm the entry.
  
Rapid data transmission             HELP
Select function XX
The display reads:
–  Press 0, 0 and 1 for “Display group number 1” and press Q to confirm the entry.
  
Read measurement value block HELP
Enter display group number XXX
The display reads: (1...4 = display fields)
–  With the engine running, watch the coolant temperature value in display field 2. The value should rise steadily.
  Note!
t  If the value displayed on the fault reader jumps from 2...5 °C, it is due to the control unit; it is not due to a faulty sender.
t  Within a certain temperature range, if engine performance is faulty and the temperature value does not rise steadily, that means that there are transient interruptions in the temperature signal and the sender must be replaced.
–  Press →.
–  Press 0 and 6 for the function “End data transmission” and press Q to confirm the entry.
–  Switch off the ignition.
If the target value is not reached:
–  Replace the coolant temperature sender -G62- with coolant temperature indicator sender -G2- → Item.
  
Read measurement value block     1    → 
1            2            3            4

Engine revs sender: testing > < Test process