Skoda OCTAVIA MK1 Service Manual page 149

circuit to positive and/or earth
between engine control unit
and dash panel insert
Signal input on the dash panel
t
insert defective
Signal output in the engine
t control unit defective (engine
control unit defective)
Note
t Regarding fault code 01126:
In this case, the "engine speed signal" is not the signal of the rotary speed sender at the
crankshaft to the engine control unit, however the signal of the engine control unit to the
t
dash panel insert which can then be used for various other systems (e.g rev counter, air
conditioning system, 0).
Readout on Possible cause of fault
-V.A.G 1552-
01163
Breakdown of
the ignition
t
t
01177
Engine control
unit
defective
t
t
01242
End stages in
the control unit
Line interruption in the
ignition circuit
Fault in the wiring to the
spark plug
Earth lead in the engine
control unit is
interrupted
Engine control unit
defective
Possible effects Rectifying fault
irregular Check dual spark ignition
–
t engine system with two ignition coils
running →
Engine does Check voltage supply of the
t –
not start control unit
Replacing engine control unit
–
→
149
Replace dash panel
–
insert.
Replacing engine
–
control unit
→ Chapter.
Chapter.
→ Chapter.
Chapter.