With TECH 2 Scan Tool

ISUZU does not provide a procedure for clearing diagnostic trouble codes without the use of a scan tool.

Scan Tool Diagnostics
A scan tool can be used to read current and history codes and to clear all history codes after a repair is complete.The scan tool must be updated to communicate with the SRS through a replaceable cartridge for SRS diagnostics. To use the scan tool, connect it to the Data Link Connector (DLC) and turn the ignition switch "ON". Then follow the manufacturer's directions for communication with the SRS. The scan tool reads serial data from the Sensing and Diagnostic Module (SDM) "Serial Data" output (terminal 24) to the DLC.