Dtc B2419 Bean Communication Malfunction

Body Electrical. Lexus Is250, Is220D. Gse20 Ale20
Lighting. Lexus Is250, Is220D. Gse20 Ale20

DESCRIPTION

INSPECTION PROCEDURE

CHECK MULTIPLEX COMMUNICATION SYSTEM

DTC B2419 BEAN Communication Malfunction


DESCRIPTION

The AFS ECU receives signals regarding the lighting condition of the headlight, shift position of the transmission, engine condition from the generator and vehicle speed from the combination meter using multiplex communication.
When the DTC (B2419) is output, the other BEAM communication DTCs are also output at the same time.

DTC No.
DTC Detection Condition
Trouble Area
B2419
  1. Malfunction in multiplex communication system
  2. Open or short in multiplex communication system circuit.
  1. Multiplex communication system
  2. Wire harness or connector
  3. AFS ECU

INSPECTION PROCEDURE

1.CHECK MULTIPLEX COMMUNICATION SYSTEM

  1. Use the intelligent tester to check if the Multiplex Communication System (MPX) is functioning normally. (Click here)

    Result:
    Result
    		Proceed to
    MPX DTC is not output
    		A
    MPX DTC is output
    		B


B
GO TO MULTIPLEX COMMUNICATION SYSTEM
A

REPLACE AFS ECU