Test Intake Air Temperature Sender - Skoda OCTAVIA MK1 Service Manual

l Battery voltage at least 11 V.
l AC generator o.k.
Connect the test box -V.A.G 1598/22 - to the wiring loom of the engine control unit
–
→ Chapter.
– Switch on ignition.
– Connect multimeter for voltage measurement to bush 1 (positive via ignition) and earth.
Specified value: approx. battery voltage.
If the specified value is not reached, check the cable connection of contact 1 of the engine
–
control unit for interruption according to current flow diagram, if necessary repair
→ Current flow diagrams and Fitting
If the specified value is not reached, connect the voltage tester to bush 1 of the plug from
–
the engine control unit (positive via ignition) and bush 2 of the plug from the engine
control unit (earth supply of the engine control unit).
Specified value: approx. battery voltage.
If the specified value is not reached, check the cable connection of contact 2 of the engine
– control unit to earth for continuity, if necessary eliminate open circuit
diagrams and Fitting
– Connect multimeter for voltage measurement to bush 3 (permanent positive) and earth.
Specified value: approx. battery voltage.
If the specified value is not reached, check the cable connection of contact 3 of the plug
–
from the engine control unit and electrical centre for continuity according to current flow
diagram, if necessary eliminate open circuit

Test intake air temperature sender

For vehicles ► 07.97
Special tools and workshop equipment required
t Handheld multimeter, e.g. -V.A.G 1526 A -
t Measuring tool set -V.A.G 1594 A -
t Test box -V.A.G 1598/22-
Note
For functional test of the intake air temperature sender see also
t
005, display field 4.
t Fitting position of the intake air temperature sender
t Engine cooled to room temperature (approx. 20°C).
locations.
locations.
→ Current flow diagrams and Fitting
→ Chapter.
212
→ Current flow
locations.
→ Chapter, display group