LIGHTING SYSTEM, Diagnostic DTC:B2480, B2481

DTC Code DTC Name
B2480 Headlight Hi LH Circuit Transistor
B2481 Headlight Hi RH Circuit Transistor

DESCRIPTION

The multiplex network front light ECU (front controller) illuminates and turns off the headlight HI beam.

DTC Code DTC Detection Condition Trouble Area
B2480 Malfunction in high beam headlight circuit (load short)

  • Multiplex network front light ECU (front controller)

  • Harness or connector
B2481 Malfunction in high beam headlight circuit (load short)

  • Multiplex network front light ECU (front controller)

  • Harness or connector

WIRING DIAGRAM

A001D9ME02
A001EQPE02

PROCEDURE


  1. CHECK HARNESS AND CONNECTOR (MULTIPLEX NETWORK FRONT LIGHT ECU - HEADLIGHT)

    A001993E01

    1. Disconnect the B14 multiplex network front light ECU connector.

    2. Disconnect the B1*1 and B11*2 headlight connectors.


      • *1: for LH

      • *2: for RH

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      for LH
      Tester Connection Condition Specified Condition
      B14-6 (HLHL) - Body ground Always 10 kΩ or higher
      for RH
      Tester Connection Condition Specified Condition
      B14-5 (HLHR) - Body ground Always 10 kΩ or higher

    OK

    REPLACE MULTIPLEX NETWORK FRONT LIGHT ECU (FRONT CONTROLLER)

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR