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 and this condition continues for 10 sec. or more.

  • ECU-B1 fuse

  • Harness or connector

  • Multiplex tilt and telescopic ECU

WIRING DIAGRAM

A015E3RE05

INSPECTION PROCEDURE

PROCEDURE


  1. INSPECT FUSE (ECU-B1)


    1. Remove the ECU-B1 fuse from the main body ECU.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      ECU-B1 fuse Always Below 1 Ω

    NG

    REPLACE FUSE

    OK

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


    1. A015ADWE24

      Disconnect the E27 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
      E27-9 (ECUB) - Body ground Always 11 to 14 V

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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


    1. A015ADWE22

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      E27-11 (GND) - Body ground Always Below 1 Ω

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE MULTIPLEX TILT AND TELESCOPIC ECU Click here