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Home >> Suzuki >> 2001 >> Vitara JS, 4D Utility, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Self-Diagnostics >> Diagnostic Tests >> DTC P0443: EVAP Circuit, Purge Control Valve Circuit Malfunction >> Diagnosis & Repair Procedure
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Diagnosis & Repair Procedure

  1. Perform DTC CONFIRMATION TEST . If DTC P0443 is set, go to next step. If DTC P0443 is not set, problem is intermittent. System is okay at this time. See TROUBLE SHOOTING - NO CODES article.
  2. Check EVAP canister purge system operation. See EVAP CANISTER PURGE SYSTEM in SYSTEM & COMPONENT TESTING article. If EVAP canister purge system operation is not okay, go to next step. If EVAP canister purge system operation is okay, problem is intermittent. System is okay at this time. See TROUBLE SHOOTING - NO CODES article. If intermittent problem is not found, replace PCM and go to DTC CONFIRMATION TEST .
  3. Check EVAP canister purge valve operation. See EVAP CANISTER PURGE VALVE in SYSTEM & COMPONENT TESTING article. If EVAP canister purge valve operation is not okay, replace EVAP canister purge valve and go to DTC CONFIRMATION TEST . If EVAP canister purge valve operation is okay, go to next step.
  4. Check for short or open in Blue/Black wire between EVAP canister purge valve, main relay and PCM 26-pin connector C51-3 terminals No. 4 and No. 15. Also check for short or open in Green/Black wire between EVAP canister purge valve and PCM 30-pin connector C51-2 terminal No. 17. See WIRING DIAGRAM article. Repair as necessary and go to DTC CONFIRMATION TEST . If wires are okay, replace PCM and go to DTC CONFIRMATION TEST .
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