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 Trouble Area
B2620 The voltage of the ECU power source drops to 8 V or less and this condition continues for 10 secs. or more.

  • ECU-B No. 1 fuse

  • Harness or connector

  • Multiplex tilt and telescopic ECU

WIRING DIAGRAM

A01NGUQE12

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. A01ND14E11
      Text in Illustration
      *1

      Rear view of wire harness connector

      (to Multiplex Tilt and Telescopic ECU)

      Disconnect the F36 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
      F36-9 (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. A01ND14E09
      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
      F36-11 (GND) - Body ground Always Below 1 Ω
      Result
      Result Proceed to
      NG A
      OK (for LHD) B
      OK (for RHD) C

    B

    REPLACE MULTIPLEX TILT AND TELESCOPIC ECU Click here

    C

    REPLACE MULTIPLEX TILT AND TELESCOPIC ECU Click here

    A

    REPAIR OR REPLACE HARNESS OR CONNECTOR