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Home >> Chrysler >> 2011 >> 300 C, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 421 (Radio Frequency (RF Hub) Module - Electrical Diagnostics - 2500 Hd & 3500 Hd) >> Diagnosis And Testing >> B1A28-00-ECM Mismatch With Skim >> When Monitored

When Monitored

WARNING: This page is about a different car, the 2013 RAM 3500 HD and 2013 RAM 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.

Whenever a valid FOBIK is in the vehicle and the ignition is turned to the ON position or a valid remote start is active, the RF Hub/PCM handshake takes place. The RF Hub validates that the message is sent to, and received by the PCM.

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