LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Suzuki >> 2003 >> Vitara 4D Utility, RWD, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Self-Diagnostics >> Diagnostic Tests >> DTC P0443: EVAP System Purge Control Valve - Circuit Malfunction >> Diagnosis & Repair Procedure
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Diagnosis & Repair Procedure

NOTE: For better performance and results of this diagnostic procedure, usage of appropriate wiring diagram is recommended. See ENGINE PERFORMANCE in SYSTEM WIRING DIAGRAMS article in ELECTRICAL.
NOTE: Perform all voltage and resistance tests using a Digital Volt-Ohmmeter (DVOM) with a minimum 10-megohm input impedance, unless stated otherwise in test procedure. Use an ohmmeter to isolate wiring harness shorts or opens.
  1. If engine system check has been performed, go to next step. If engine system check has not been performed, perform A-4: ENGINE SYSTEM CHECK  under SYSTEM TESTS, then go to next step.
  2. Perform EVAP-CPV component test. See EVAP CANISTER PURGE VALVE under FUEL EVAPORATION under EMISSION SYSTEMS & SUB-SYSTEMS in SYSTEM & COMPONENT TESTING article. If EVAP-CPV is faulty, replace EVAP-CPV. After repair, repeat DTC CONFIRMATION TEST  . If EVAP-CPV is okay, check for open or short CIRCUIT in Blue/Black wire and Green/Black wire between EVAP canister purge valve and ECM. If open or short circuit is found, repair as necessary and repeat DTC CONFIRMATION TEST  . If open or short circuit is not found, substitute ECM with a known good unit and repeat DTC CONFIRMATION TEST  .
scientia non olet · About LEMON Manuals