Suzuki 2000 Grand Vitara SQ416, Service Manual

Page: 585 / 729

YH4
GRAND
VITARA
6E1-48 ENGINE AND EMISSION CONTROL SYSTEM (G16 / J20 ENGINES)
1. Purge hose
1. Vacuum nozzle
EVAPORATIVE EMISSION CONTROL SYSTEM
Evap Canister Purge System Check
1) Warm up engine to normal operating temperature.
2) Stop engine and hoist vehicle so that all wheels rotate freely.
3) Start engine, release parking brake lever, set transfer in “2H”
and M / T in “5th” or A / T in “D”.
WARNING:
Make sure that transfer is set to “2H” range position for
this check. If it is set to “4H” or “4L” position, front wheel
turn at high speed and a very dangerous situation may
occur.
4) Disconnect purge hose from EVAP canister.
5) Place finger against the end of disconnected hose and check
that vacuum is not felt there when engine is running at idle
speed.
6) Also check that vacuum is felt when throttle valve is opened and
vehicle speed (speedometer indication) is higher than 40 km / h.
Vacuum Passage Inspection
Start engine and run it at idle speed. With finger placed against vac-
uum nozzle, check that vacuum is applied.
If it is not applied, clean vacuum passage by blowing compressed
air.
Vacuum Hose Inspection
Check hoses for connection, leakage, clog and deterioration.
Replace as necessary.
EVAP Canister Purge Valve Inspection
1) With ignition switch OFF, disconnect coupler from canister
purge valve.
2) Check resistance between two terminals of EVAP canister
purge valve.
Resistance of EVAP canister purge valve:
28 – 35
W
at 20
_
C (68
_
F)
If resistance is as specified, proceed to next operation check. If
not, replace.