Scan Tool Diagnostics
NOTE:
Refer to Defective Scan Tool Notice
in Cautions and Notices.
A scan tool can read serial data from terminal 9 of the data link connector (DLC). The scan tool is used to read DTCs, and to clear some DTCs after a repair is completed. By design, DTC 051 and 053 can not be cleared. And the DTC 061 can not be cleared for the ignition cycle once the DTC has been detected by the SDM.
To use the scan tool, turn the ignition OFF, connect the scan tool to the DLC, and turn the ignition switch to ON.
Follow the instructions in the scan tool manual. The SDM sends serial data from terminal A4 of the SDM to terminal 9 of the DLC.