OBD-II Drive Cycle: Notes

The OBD-II drive cycle purpose is to execute OBD-II monitors and identify any concerns with the OBD system. DTC P1000 will be erased of all OBD-II monitors that have completed during OBD-II drive cycle. Obey all traffic laws during execution of OBD-II drive cycle. Use scan tool to observe status of each OBD-II monitor at completion of OBD-II drive cycle.

• OBD-II Drive Cycle Recommendations
  
  Most OBD-II monitors will complete more readily driving with a "steady throttle" during acceleration or cruise modes. Smooth throttle operation will minimize the time required for monitor completion. Fuel tank level should be 1/2 to 3/4, with 3/4 being the optimum desired level. The evaporative monitor may only operate during the first 30 minutes of engine operation. When executing the evaporative monitor, stay in part throttle and drive steadily to avoid fuel slosh.

1. Vehicle Preparation
   
   Connect scan tool to vehicle. Verify the following PIDs:
   • IAT PID 40-100°F (4-38°C)
   • Fuel Level Input (FLI) PID 50-75 Percent
   • ECT PID Minimum Of 170°F (77°C)

Without returning to key off, using scan tool, clear all DTCs. DTC P1000 will remain. Using scan tool, view status of OBD-II monitors. Proceed toOBD-II Drive Cycle Procedure  if necessary or proceed to identified monitor drive cycle. See MONITOR REPAIR VERIFICATION DRIVE CYCLES MONITOR REPAIR VERIFICATION DRIVE CYCLES in SELF DIAGNOSTICS ARTICLE.