Drive Modes: Notes
CAUTION:
While performing the drive mode, always operate the vehicle in a safe and lawful manner. When the WDS or equivalent scan tool is used to observe monitor system status while driving, ensure another technician is with you, or record the data in the WDS or equivalent scan tool using the PID/Data Monitor And Record Procedure function and inspect later. See PID/DATA MONITOR & RECORD PROCEDURE .
NOTE:
Vehicle speed and engine speed detected by the PCM may differ from that indicated by the speedometer and tachometer. Use the WDS or equivalent scan tool to monitor vehicle speed. If the OBD-II system inspection is not completed during the drive mode, the following causes are considered, the OBD-II system detects the malfunction and the drive mode procedure is not completed correctly. Disconnecting the battery will reset the memory. Do not disconnect the battery during and after drive mode. The WDS or equivalent scan tool can be used at any time through the course of drive mode to monitor the completion status. Monitoring can be done by viewing the On Board System Readiness menu. See ON-BOARD SYSTEM READINESS TEST .
Performing the drive mode inspects the OBD-II system for proper operation and must be performed to ensure that no additional DTCs are present. During drive mode, the following systems are inspected:
- EGR system.
- Oxygen sensor (HO2S).
- Oxygen sensor heater.
- Catalytic converter (TWC).
- Fuel, misfire and evaporative (EVAP) system.