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Loss of Communication DTC cross-reference chart

WARNING: This page is about a different car, the 2008 Acura TL and 2007 Acura TL. However, it is still accessible from the selected car via links, so may be relevant.

When an ECU is unable to communicate with the other ECUs on the circuit, the other units will set loss of communication DTCs. Use this chart to find the control unit that is not communicating.

  1. Find the Transmitting Unit that is in the same row as all of the loss of communication DTCs retrieved.
  2. Perform the input test for the transmitting unit.
    LOSS OF COMMUNICATION DTC CROSS-REFERENCE CHART

    Transmitting Unit Receiving Unit/Loss of Communication DTC
    Message MICU Relay Control Module Door Multiplex Control Unit Gauge Control Module Combination Switch Control Unit Display Panel Control Unit Power Seat Control Unit Automatic Lighting Control Unit Hands Free link Control Unit Acura Link Control Unit (XM Receiver) Navigation unit
    MICU ALARM TX B1056                  
    MICU TX B1055 RX B1157 B1255   B1806 B1556 RX    
    DOOR SR TX B1057 RX B1159     B1807        
    Relay Control Module R/M B1005 TX   B1158              
    Door Multiplex Control Unit PANIC B1010 B1059 TX                
    DOOR LOCK SW B1006 B1058 TX B1160              
    MEM SW     TX       B1809        
    Gauge Control Module VSP/NE B1011 B1060   TX   B1706 B1805   RX    
    A/T B1008 B1061   TX     B1808        
    ENGTE MP       TX   B1705          
    CDS (SRS) B1032     TX              
    Combination Switch Control Unit HLSW B1007 B1062   B1155 TX     B1555      
    WIPSW   B1063   B1156 TX            
    Climate Control Unit AC   RX       TX          
    ECM/PCM ENG       B1168              
    A/T       B1169              
    VSA VSA       B1170              
    TPMS TPMS       B1173              
    SRS SRS       B1187              
    Navigation Unit                        
    AcuraLink Control Unit                   B2208   B2207
    HandsFreeLink Control Unit                        
    RX: Receiving unit does not set a loss of communication DTC.
    TX: Transmitting unit does not set a loss of communication DTC.