POWER TILT AND POWER TELESCOPIC STEERING COLUMN SYSTEM, Diagnostic DTC:B2620A2

DTC Code DTC Name
B2620A2 ECU Power Source Circuit System Voltage Low

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
B2620A2 ECU Power Source Circuit System Voltage Low The voltage of the ECU power source drops to 8 V or less for 10 seconds or more.
  • ECU-B NO. 2 fuse

  • Harness or connector

  • Multiplex tilt and telescopic ECU

WIRING DIAGRAM

B004IU7E58
*1 from Battery
*2 ECU-B NO. 2
*3 Multiplex Tilt and Telescopic ECU

CAUTION / NOTICE / HINT

Note

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

PROCEDURE


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


    1. B006Y6FC87
      *a

      Front view of wire harness connector

      (to Multiplex Tilt and Telescopic ECU)

      Disconnect the K72 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
      K72-9 (ECUB) - Body ground Engine switch off 11 to 14 V
      Result
      Proceed to
      OK
      NG

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


    1. B004OF0C88
      *a

      Front view of wire harness connector

      (to Multiplex Tilt and Telescopic ECU)

      Disconnect the K72 multiplex tilt and telescopic ECU connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      K72-8 (GND2) - Body ground Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    OK
    NG