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HOMESERVICE MANUALSMAZDA1999626 ES, 2.5 D, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 59 (ENGINE CONTROLS [SELF-DIAGNOSTICS 2.3L])DRIVE CYCLESOBD-II DRIVE MODESMODE 4 - EVAP SYSTEM REPAIR VERIFICATION DRIVE MODE
1999 Mazda 626 ES, 2.5 D, Standard

Mode 4 - EVAP System Repair Verification Drive Mode

1999 Mazda 626 ES, 2.5 D, StandardSECTION Mode 4 - EVAP System Repair Verification Drive Mode
WARNING: This page is about a different car, the 2003 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: If MODE 4 - EVAP SYSTEM REPAIR VERIFICATION DRIVE MODE cannot be performed (you cannot drive vehicle under MODE 4 - EVAP SYSTEM REPAIR VERIFICATION DRIVE MODE condition), perform Evaporative System Test procedure as an alternative. See FUEL EVAPORATIVE SYSTEM - EXCEPT PROTEGE & PROTEGE5 under EMISSION SYSTEMS & SUB-SYSTEMS in SYSTEM & COMPONENT TESTING - MAZDA6, MIATA, MPV, PROTEGE & PROTEGE5 article. MODE 4 - EVAP SYSTEM REPAIR VERIFICATION DRIVE MODE can be performed regardless RFCFLAG condition.
  1. Verify all following PIDs are within the following specifications. All PIDs must be within specifications before engine is started to initiate the evaporative system test:
    • BARO: 21.3 in. Hg (72.3 kPa) or higher
    • IAT: 41-95°F (5-35°C)
    • FTL: 15-85 percent
    • VPWR: 10.9-14.6 volts
  2. Clear DTC from PCM memory using WDS or equivalent.
  3. Start engine and idle it for more than 10 seconds, then turn ignition key to OFF. Leave vehicle for 5 hours or more.
  4. Start engine and idle for more than 15 minutes.
  5. Drive vehicle at 40-50 MPH for more than 5 minutes.
  6. Stop vehicle and turn ignition off.
  7. Leave vehicle as is for 10 minutes or more.
  8. Start engine.
  9. Access to ON BOARD SYSTEM READINESS to inspect DRIVE MODE COMPLETION STATUS:
    • If completed, RFC flag changes from NO to YES.
    • If not completed, turn ignition off. Go back to step  1.
  10. Access DIAGNOSTIC MONITORING TEST RESULTS to inspect monitor results. If MEAS are not within specification, repair has not been completed.
  11. Verify no DTCs are available.
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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.