Suzuki GA413, Service Manual

Page: 857 / 1246

ENGINE GENERAL INFORMATION AND DIAGNOSIS 6-81
GA413
supple
DTC P0443 PURGE CONTROL VALVE CIRCUIT MALFUNCTION
CIRCUIT DESCRIPTION
1. EVAP canister purge valve
DTC DETECTING CONDITION POSSIBLE CAUSE
Canister Purge control valve circuit is opened or
shorted. “GRN/YEL” circuit open or short
“BLK/RED” circuit open or short
Canister purge valve malfunction
ECM
DTC CONFIRMATION PROCEDURE
1) Connect scan tool to DLC with ignition switch OFF.
2) Turn ON ignition switch and clear DTC, pending DTC and freeze frame data by using scan tool.
3) Start engine and keep it at idle for 5 sec. or more.
4) Check DTC and pending DTC by using scan tool.
INSPECTION
STEP ACTION YES NO
1 Was “ENGINE DIAG. FLOW TABLE” performed? Go to Step 2. Go to “ENGINE DIAG.
FLOW TABLE”.
2 Check EVAP canister purge system for operation
referring to “EVAP Canister Purge Inspection” in
Section 6E.
Is check result satisfactory? Intermittent trouble or
faulty ECM.
Check for intermittent
referring to “Intermittent
and Poor Connection” in
Section 0A. Go to Step 3.
3 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.
Resistance between
two terminals
: 30 – 34 at 20 C (68 F)
Resistance between
terminal and body
: 1M or higher
Is it as specified?
“GRN/YEL” circuit open
or short. Replace EVAP canister
purge valve.
Fig. 1 for Step 1