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Normal Operation and Fault Conditions

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The RCM uses information contained in messages from the APIM sent on the HS-CAN2. 

PPT AL RCM DTC FAULT TRIGGER CONDITIONS

DTC Description Fault Trigger Conditions
U0253:00 Lost Communication with Accessory Protocol Interface Module: No Sub Type Information This DTC sets if the RCM does not receive an expected message from the APIM.
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