ENGINE GENERAL INFORMATION AND DIAGNOSIS (TBI FOR G10) 6-79
Main
fuse
Main relay
To other valves
EVAP canister
purge valve
EVAP canister
purge valve
Surge
tank
Tank pressure
control valve
Fuel vapor separator
Fuel filter cap
Fuel
level
sensor
Fuel tank
EVAP
canister
DTC P0443 PURGE CONTROL VALVE CIRCUIT MALFUNCTION
CIRCUIT DESCRIPTION
DTC DETECTING CONDITION POSSIBLE CAUSE
Canister Purge control valve circuit is opened
or shorted.
D “R/G” circuit open or short
D “W/BI” circuit open
D Canister purge valve malfunction
DTC CONFIRMATION PROCEDURE
1) Clear DTC with ignition switch ON.
2) Select “DTC” mode on scan tool and check DTC.
INSPECTION
STEP ACTION YES NO
1 Check EVAP canister purge valve operation
1) With ignition switch OFF, disconnect coupler
from canister purge valve.
2) Check resistance of EVAP canister purge
valve. See Fig. 1.
Resistance between
two terminals : 30 – 34 Ω at 20_C (68_F)
Resistance between
terminal and body : 1M Ω or higher
Is it as specified?
“R/G” circuit open or
short.
Replace EVAP canister
purge valve.
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