Diagnostic Testing: Notes

NOTE: For component location information, refer to the THEORY/OPERATION - 2.3L TURBO article. The ISAT scan tool will be referred to as a scan tool.

CAUTION: If ECM replacement is instructed in following testing, always ensure ECM harness connector and ground circuit are okay. If either are suspect, repair and repeat testing to confirm ECM malfunction.

CAUTION: Service all DTCs in numerical order, starting with the lowest number first.