Skoda OCTAVIA MK1 Service Manual page 248

on).
Conduct a test drive in the first gear (press down
–
the gas pedal promptly at low speed).
During the acceleration, the display in the display field 4
must show "0" (during this period the AC compressor is
switched off).
For vehicles 08.97 ►
Display field 3 must display "0" (air
conditioning off).
Display field 4 must display "0" (AC
compressor off).
Switch on the air conditioning system. The
–
AC compressor must run.
The following appears in the display:
Display field 3 must display "1" (air conditioning
on).
Display field 4 must display "1" (AC compressor
on).
Conduct a test drive in the first gear (press down
–
the gas pedal promptly at low speed).
The following appears in the display:
During the acceleration, the display in the display field 4 must show
"0" (during this period the AC compressor is switched off).
For all vehicles
If the readout in the display is not as described, switch off the
–
engine and connect the test box -V.A.G 1598/22 - at wiring loom to
the engine control unit
Test wiring of contact 8 of engine control unit to the air
– conditioning system control unit for short-circuit to earth or
positive and/or for interruption according to the current flow
diagram → Current flow diagrams and Fitting
If there is no fault in the wiring, check the function of the air
– conditioning system
Gr.87.
Check engine speed adaptation by switching on the air conditioning system
Special tools and workshop equipment required
t Handheld multimeter, e.g. -V.A.G 1526 A -
→ Chapter.
→ Heating and Air conditioning system → Rep.
Reading measured value block 19
->
850/rpm
0
Reading measured value block 19
->
850/rpm
Reading measured value block 19
->
850/rpm
locations.
248
0
0 0 00000000
0 1 00000001
Reading measured value
block 19
->
850/rpm 0
00000000
1
1