Transponder Communication Failure/Transponder CRC Failure

Using customer's extra key, insert key into ignition switch and turn switch to RUN position. Using scan tool, erase DTCs. Cycle ignition switch on, then off. Read DTCs. If DTC is reset, replace SKIM and perform SKIM INITIALIZATION PROCEDURE . If DTC is not reset, erase codes. Replace and program new key. See appropriate ANTI-THEFT SYSTEM article.