LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Suzuki >> 2002 >> Grand Vitara JLS, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Self-Diagnostics >> Diagnostic Tests >> DTC P0448: EVAP Circuit, Vent Control Circuit Shorted >> Diagnosis & Repair Procedure
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Diagnosis & Repair Procedure

  1. If engine system check has been performed, go to next step. If engine system check has not been performed, see and perform A4: ENGINE SYSTEM CHECK  under SYSTEM TESTS and go to next step.
  2. With ignition switch OFF, disconnect EVAP canister vent valve connector. Turn ignition switch ON and measure voltage between EVAP canister vent valve connector C55 terminal No. 2 and ground. If voltage is 10-14 volts, go to next step. If voltage is not 10-14 volts, go to step  4 .
  3. Check if Violet/Red circuit is shorted to power circuit. Repair as necessary and go to DTC CONFIRMATION TEST  .
  4. Inspect EVAP canister vent valve referring to EVAP CANISTER VENT VALVE in SYSTEM & COMPONENT TESTING article. If result is satisfactory, check for faulty ECM (PCM) or intermittent trouble. If result is not satisfactory, replace EVAP canister vent valve and go to DTC CONFIRMATION TEST  .
scientia non olet · About LEMON Manuals