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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 >> B1A7D-01-Start Button - General Electrical Failure >> 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.

Any time the Start/Stop Button is pressed, the Radio Frequency Hub (RF Hub) will check the (D122) Security K Line Communication circuit and the (G20) Ignition Switch Sense circuit. It samples these circuits every 10ms. while the button is pressed.

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