POWER TILT AND POWER TELESCOPIC STEERING COLUMN SYSTEM IG Power Source Circuit

DESCRIPTION

When the engine switch is turned on (IG), the IG power source circuit supplies positive voltage to the multiplex tilt and telescopic ECU.

The multiplex tilt and telescopic ECU also receives engine switch signals via this circuit.

WIRING DIAGRAM

A0161VNE01

INSPECTION PROCEDURE

PROCEDURE


  1. INSPECT FUSE (ECU-IG RH)


    1. Remove the ECU-IG RH fuse from the main body ECU RH (cowl side junction block RH).

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      ECU-IG RH fuse Always Below 1 Ω

    NG

    REPLACE FUSE

    OK

  2. INSPECT MULTIPLEX TILT AND TELESCOPIC ECU (IG TERMINAL VOLTAGE)


    1. A015YJ0E04

      Disconnect the J28 connector from the multiplex tilt and telescopic ECU.

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      J28-8 (IG) - J28-11 (GND) Engine switch on (IG) 11 to 14 V

    NG

    CHECK HARNESS AND CONNECTOR (MULTIPLEX TILT AND TELESCOPIC ECU - BODY GROUND) Click here

    OK

    PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE Click here

  3. CHECK HARNESS AND CONNECTOR (MULTIPLEX TILT AND TELESCOPIC ECU - BODY GROUND)


    1. A015YJ0E01

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      J28-11 (GND) - Body ground Always Below 1 Ω

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. CHECK HARNESS AND CONNECTOR (MULTIPLEX TILT AND TELESCOPIC ECU - MAIN BODY ECU RH)


    1. A015ZJYE01

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

      Standard Voltage
      Tester Condition Switch Condition Specified Condition
      RA-1 - Body ground Engine switch on (IG) 11 to 14 V

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR (MAIN BODY ECU RH (COWL SIDE JUNCTION BLOCK RH) - BATTERY)

    OK

    REPAIR OR REPLACE HARNESS OR CONNECTOR (MULTIPLEX TILT AND TELESCOPIC ECU - MAIN BODY ECU RH)