Testing Brake Vacuum Pump -V192 - Skoda Octavia 1997 Workshop Manual

24
–
Observe engine speed in display field 1 and readout
for lambda control upstream of catalytic converter in
display field 3.
–
Systematically spray parts of the intake system with
engine leak search spray.
If the engine speed drops or if the displayed lambda con-
trol value changes:
–
Press .
–
Enter for the function „End output" and confirm
0 6
with .
Q
–
Switch off ignition.
–
Check the sprayed location of the intake system for
leaks and if necessary eliminate the fault.

Testing brake vacuum pump -V192-

The brake servo assistance system on vehicles fitted with
automatic gearbox improves provision of the vacuum re-
quired.
The brake vacuum pump -V192- and the brake servo as-
sistance control unit -J542- form a single unit.
Special tools, test and measuring equipment and
auxiliary items required
Vehicle system tester -V.A.G 1552-
♦
Diagnostic cable -V.A.G 1551/3, 3A, 3B oder 3C-
♦
Hand multimeter (e.g. -V.A.G 1715-)
♦
Diode test lamp (e.g. -V.A.G 1527B-)
♦
Adapter cable set (e.g. -V.A.G 1594 A, B oder C-)
♦
Test box -V.A.G 1598/31-
♦
Check for proper operation
–
Initiate final control diagnosis and select vacuum
pump for brakes -V192- µ Chapter 01-1.
If the pump does not run:
Test actuation µ 24-2 page 6, voltage supply
–
µ 24-2 page 7 and cables µ Current Flow Dia-
grams, Electrical Fault Finding and Fitting Locations.
Test control
–
Unplug plug -1- from the vacuum pump -2-.
–
Connect diode test lamp to contacts 1 and 2 of the
plug -1-.
–
Switch on the ignition and initate an actuator diagno-
sis.
The LED must flash.
The LED flashes:
–
Proceed with the final control diagnosis up to the end.
24-2 6
page
Octavia 1997 1.6 l/75 kW Engine, Fuel Injection and Ignition System
Testing components Edition 10.04
S00.5135.52.20