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Home >> Suzuki >> 2002 >> Grand Vitara JLS, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Self-Diagnostics >> Diagnostic Tests >> DTC P0444 Or DTC P0496 >> Diagnosis and Repair Procedure
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Diagnosis and 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. Inspect EVAP canister purge valve, referring to EVAP CANISTER PURGE VALVE CIRCUIT in SYSTEM & COMPONENT TESTING article. If check result is satisfactory, check for intermittent trouble. See INTERMITTENTS TROUBLE SHOOTING - NO CODES. If result is not satisfactory, go to next step.
  3. With ignition switch OFF, disconnect EVAP canister purge valve connector. Turn ignition switch ON and measure voltage between EVAP canister purge valve connector C27 terminal No. 1 and ground. If voltage is 10-14 volts, go to next step. If voltage is out of specification, check if Blue/Black circuit is open or shorted to ground. Repair as necessary and go to DTC CONFIRMATION TEST (P0444)  or DTC CONFIRMATION TEST (P0496)  .
  4. With ignition switch OFF, disconnect ECM (PCM) connectors. Check for continuity between ECM (PCM) connector C51-2 terminal No. 1 and EVAP canister purge valve connector C27 terminal No. 2. If continuity is present, go to next step. If continuity is not present, check for open Green/Black circuit. Repair as necessary and go to DTC CONFIRMATION TEST (P0444)  or DTC CONFIRMATION TEST (P0496)  .
  5. Measure resistance between EVAP canister purge valve connector C27 terminal No. 2 and ground. If resistance is infinity, replace EVAP canister purge valve. If resistance is not infinity, check if Green/Black circuit is shorted to ground. Repair as necessary and go to DTC CONFIRMATION TEST (P0444)  or DTC CONFIRMATION TEST (P0496)  .
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