POWER TILT AND POWER TELESCOPIC STEERING COLUMN SYSTEM, Diagnostic DTC:B2620

DTC Code DTC Name
B2620 ECU Power Source Circuit Malfunction

DESCRIPTION

The ECU power source circuit supplies positive voltage to the multiplex tilt and telescopic ECU.

DTC Code Detection Condition Trouble Area
B2620 The ECU power source voltage drops to 8 V or less for 10 seconds or more.

  • ECU-B fuse

  • Harness or connector

  • Multiplex tilt and telescopic ECU

WIRING DIAGRAM

A003EHPE10

INSPECTION PROCEDURE

Note

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

PROCEDURE


  1. CHECK HARNESS AND CONNECTOR (MULTIPLEX TILT AND TELESCOPIC ECU - BATTERY)


    1. A003B4OE06
      Text in Illustration
      *1

      Rear view of wire harness connector

      (to Multiplex Tilt and Telescopic ECU)

      Disconnect the D45 multiplex tilt and telescopic ECU connector.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      D45-9 (ECUB) - Body ground Always 11 to 14 V

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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


    1. A00DUEZE02
      Text in Illustration
      *1

      Rear view of wire harness connector

      (to Multiplex Tilt and Telescopic ECU)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      D45-11 (GND) - Body ground Always Below 1 Ω

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE MULTIPLEX TILT AND TELESCOPIC ECU Click here