LIGHTING SYSTEM(for Triple Beam Headlight), Diagnostic DTC:B242E

DTC Code DTC Name
B242E Open in IG Circuit

DESCRIPTION

This DTC is stored when a malfunction occurs in the headlight light control ECU sub-assembly RH IG power source circuit. The headlight light control ECU sub-assembly LH stores DTC B242E.

DTC No. Detection Item DTC Detection Condition Trouble Area
B242E Open in IG Circuit Open in the headlight light control ECU sub-assembly RH IG power source circuit

  • Headlight light control ECU sub-assembly RH

  • Harness or connector

WIRING DIAGRAM

B0075X3E04
*a from IG1 NO. 3 Relay
*b ECU-IG1 NO. 2
*c Headlight light control ECU sub-assembly RH

CAUTION / NOTICE / HINT

Note

Inspect the fuses for circuits related to this system before performing the following procedure.

PROCEDURE


  1. CLEAR DTC


    1. Clear the DTCs.

      Click here


      Body Electrical > HL AutoLeveling > Clear DTCs
      Result
      Proceed to
      NEXT

    NEXT

  2. CHECK FOR DTC


    1. Turn the engine switch on (IG).

    2. Check for DTCs.

      Click here


      Body Electrical > HL AutoLeveling > Trouble Codes
      OK
      DTC B242E is not output.
      Result
      Proceed to
      OK
      NG

    OK

    USE SIMULATION METHOD TO CHECK Click here

    NG

  3. CHECK HARNESS AND CONNECTOR (HEADLIGHT LIGHT CONTROL ECU SUB-ASSEMBLY RH - BATTERY AND BODY GROUND)


    1. Disconnect the A7 headlight light control ECU sub-assembly RH connector.

    2. Measure the voltage according to the value(s) in the table below.

      Standard Voltage
      Tester Connection Condition Specified Condition
      A7-4 (IG) - Body ground Engine switch off Below 1 V
      A7-4 (IG) - Body ground Engine switch on (IG) 11 to 14 V

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A7-12 (GND) - Body ground Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE HEADLIGHT LIGHT CONTROL ECU SUB-ASSEMBLY RH Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR