B1625 ECM Communication Data Failure: General Description

IPM communicates with ECM through the serial communication line. If ECM requests authentication from IPM after IG ON, IPM check authentication with transponder then, sends this signal to ECM whether authentication is O.K or not.

IPM is located inside of instrument panel, left knee of driver side. ECM is installed at near the brake booster, right side of engine room compartment.