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 No.

Detection Item

DTC Detection Condition

Trouble Area

B2620

ECU Power Source Circuit Malfunction

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

C149263E31

CAUTION / NOTICE / HINT

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. C197979C03

      *a

      Rear view of wire harness connector

      (to Multiplex Tilt and Telescopic ECU)

      Disconnect the G33 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

      G33-9 (ECUB) - Body ground

      Always

      11 to 14 V

      Result

      Result

      OK

      NG
    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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

    1. C197979C02

      *a

      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

      G33-11 (GND) - Body ground

      Always

      Below 1 Ω

      Result

      Result

      OK

      NG
    OK

    REPLACE MULTIPLEX TILT AND TELESCOPIC ECU

    Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR