On-Board Diagnostics With Scan Tool

WARNING: This page is about a different car, the 2007 Mercury Mariner and 2007 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: For detailed instructions and other diagnostic methods using the scan tool, refer to the Introduction - Gasoline Engines article or scan tool instruction guide.

NOTE: If using a generic scan tool, refer to the Introduction - Gasoline Engines article for instructions on carrying out On-Board Diagnostics procedures.

The Self Tests can be used to diagnose the PCM, sensors and actuators of this transaxle.

The following is a guide for using the on-board diagnostic (OBD) Self Tests and the scan tool.

Self Test KOEO - Key On/Engine Off
Self Test KOER - Key On/Engine Running
Self Test CMDTCs - Continuous Memory DTCs
Clearing DTCs
OBD II Drive Cycle
Other scan tool Features

For information on other diagnostic testing features using the scan tool, refer to the Introduction - Gasoline Engines article. Other diagnostic methods include the following:

PID access mode, used to monitor sensors and actuators.
Freeze frame data access mode, used to view emission-related data values from specific PIDs.
Oxygen sensor monitor mode, used to monitor the oxygen sensor.