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Inspection Procedure

  1. CHECK POWER WINDOW REGULATOR MASTER SWITCH ASSEMBLY 
    1. Check if code B1221/21 will disappear but only B1211/11 (communication stop) will be output when the master switch connector is disconnected.
      1. B1221/21 code output, proceed to A.
      2. B1211/11 code output, proceed to B.
    1. B : REPLACE POWER WINDOW REGULATOR MASTER SWITCH ASSEMBLY 
    2. A : REPLACE MULTIPLEX NETWORK BODY ECU 
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