Vacuum Hose Circuit; Vacuum Switches Valve (Vsv) Inspection - Toyota HILUX 1993 Repair Manual

AC–32
AIR CONDITIONING SYSTEM

VACUUM HOSE CIRCUIT

VACUUM SWITCHING VALVE (VSV)
INSPECTION OF VSV
1. DISCONNECT VACUUM HOSES AND CONNECTOR
FROM VSV
2. CHECK VACUUM CIRCUIT CONTINUITY IN VSV BY
BLOWING AIR INTO PIPE
(a) Connect the VSV terminals to the battery terminals
(b) Blow into pipe (A) , and check that air comes out of
(c) Disconnect the battery.
(d) Blow into pipe (B) and check that air comes out of
3. CHECK FOR SHORT CIRCUIT
Using an ohmmeter, check that there is no continuity be–
tween each terminal and the VSV body.
If a short circuit is found, repair or replace the VSV.
– Vacuum Switching Valve (VSV)
as shown.
pipe (B), but does not come out of filter (C).
filter (C), but does not come out of pipe (A) .
If a problem is found, replace the VSV.