LEMON Manuals
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Dodge and Ram
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2016
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Journey R/T, AWD
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Repair and Diagnosis
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Restraints
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Restraints Control Systems
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(Electronic Pedestrian Protection (EPP) Module - Electrical Diagnostics)
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DTC Troubleshooting
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U121C-00- Lost Communication With Left SAFING Pedestrian Protection Satellite Sensor
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When Monitored
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When Monitored
The impact sensor performs a self test for internal circuitry at power up during the initialization process, and continuously through the ignition cycle every 0.25 - 10 ms.