Inspection/Maintenance Heated Oxygen Sensor/Oxygen Sensor System Set Procedure: Procedure

Perform INSPECTION/MAINTENANCE SYSTEM CHECK . After performing inspection/maintenance system check, go to next step.

CAUTION: Road test vehicle under safe conditions and while obeying all traffic laws. Do not attempt any maneuvers that could jeopardize vehicle control. Failure to adhere to these precautions could lead to serious personal injury and vehicle damage.

Verify vehicle is operating within Conditions for Running. Turn off all accessories. Start and idle engine. Accelerate at part throttle to 45-55 MPH. Maintain this speed for 6 minutes or until I/M SYSTEM STATUS updates to YES. M/T may require operation in 4th or 5th gear. Using scan tool, review I/M SYSTEM STATUS display. If HO2S SYSTEM STATUS update to YES, go to step 5. If HO2S SYSTEM STATUS does not update to YES, go to next step.
Using scan tool, observe DTC information. If scan tool indicates any failed DTCs, see DIAGNOSTIC TROUBLE CODE INDEX table under DIAGNOSTIC TROUBLE CODE DEFINITIONS. If scan tool does not indicate any failed DTCs, go to next step.
Using scan tool, observe NOT RAN SINCE CODE CLEARED display to determine if DTCs P0133, P0140, P1133 and P1134 have run. For those DTCs that have not run, see Conditions for Running DTC in appropriate DTC under DIAGNOSTIC TESTS. Operate vehicle to meet code enable criteria until DTC(s) runs. Using scan tool, observe I/M SYSTEM STATUS display. If HO2S SYSTEM STATUS updated to YES, go to next step. If HO2S SYSTEM STATUS did not update to YES, see DIAGNOSTIC AIDS .
Using scan tool, check for DTCs. If scan tool indicates any DTCs are set, see DIAGNOSTIC TROUBLE CODE INDEX table under DIAGNOSTIC TROUBLE CODE DEFINITIONS.