LIGHTING SYSTEM Headlight Beam Level Control Actuator Circuit

DESCRIPTION

The headlight leveling ECU assembly actuates the headlight leveling motor according to vehicle conditions.

WIRING DIAGRAM

A01JAHSE08

INSPECTION PROCEDURE

PROCEDURE


  1. CHECK HARNESS AND CONNECTOR (HEADLIGHT LEVELING MOTOR - HEADLIGHT LEVELING ECU ASSEMBLY)


    1. Disconnect the A48 headlight leveling ECU connector.

    2. Disconnect the A14 or A49 headlight leveling motor connector.

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

      Standard Resistance
      LH Side
      Tester Connection Condition Specified Condition
      A48-18 (LHT) - A14-2 (LHT) Always Below 1 Ω
      A48-11 (LH+) - A14-3 (LHIG) Always Below 1 Ω
      A48-24 (LH-) - A14-1 (LHE) Always Below 1 Ω
      A48-18 (LHT) - Body ground Always 10 kΩ or higher
      A48-11 (LH+) - Body ground Always 10 kΩ or higher
      A48-24 (LH-) - Body ground Always 10 kΩ or higher
      RH Side
      Tester Connection Condition Specified Condition
      A48-17 (RHT) - A49-2 (RHT) Always Below 1 Ω
      A48-10 (RH+) - A49-3 (RHIG) Always Below 1 Ω
      A48-23 (RH-) - A49-1 (RHE) Always Below 1 Ω
      A48-17 (RHT) - Body ground Always 10 kΩ or higher
      A48-10 (RH+) - Body ground Always 10 kΩ or higher
      A48-23 (RH-) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Click here