Suzuki 2000 Grand Vitara SQ625 Service Manual page 212

TROUBLESHOOTING (DTC P0443)
STEP
1 Was "ENGINE DIAG. FLOW TABLE" performed?
2 Check EVAP canister purge system for operation
referring to "EVAP Canister Purge System" check.
Is check result satisfactory?
3 Check EVAP canister purge valve for resistance
referring to "EVAP Canister Purge Valve" and its circuit
check.
Is resistance as specified?
ACTION
ENGINE (H25 ENGINE) 6-1-101
YES
Go to Step 2.
Intermittent trouble or
faulty ECM (PCM).
Check for intermittent
referring to "Intermit-
tent and Poor Connec-
tion" in Section 0A.
"G/B" or "Bl/B" circuit
open or short.
If wire and connec-
tions are OK, substi-
tute a known-good
ECM (PCM) and
recheck.
NO
Go to "ENGINE
DIAG. FLOW
TABLE".
Go to Step 3.
Replace EVAP
canister purge
valve.