A3 Mk1
Test sequence
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If reading does not match specification:
If reading matches specification:
Checking power supply for lambda probe heating |
Note: Activation and deactivation of lambda probe heating by engine control unit can be observed if necessary in function "Read measured value block", display group number 041, display zone 4. If there is no voltage: |
If there is still no voltage:
=> "Current Flow Diagrams, Electrical Fault-finding and Fitting Locations" binder |
If power supply is OK:
If there is no voltage:
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If wiring is OK, but there is no earth supply for lambda probe heating:
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