СИСТЕМА ПОСАДКИ И ЗАПУСКА, Diagnostic DTC:B2273

DTC Code DTC Name
B2273 Ignition 2 Monitor Malfunction

DESCRIPTION

This DTC is output when a malfunction occurs in the IG2D output circuit, which is between the IG2 relay actuation circuit inside the main body ECU and the IG2 relay.

DTC Code Detection Condition Trouble Area
B2273 IG2 relay actuation circuit inside main body ECU or other related circuit is malfunctioning

  • Main body ECU


  • IG2 relay


  • Harness or connector

WIRING DIAGRAM

A001DRIE04
*a from Battery
*b to Steering Lock ECU
*c Main Body ECU

PROCEDURE


  1. READ VALUE USING INTELLIGENT TESTER (IG2 RELAY MONITOR (INSIDE))


    1. Use the Data List to check if the IG2 relay is functioning properly.

      Main Body
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      IG2 Relay Monitor (Inside) IG2 inner relay monitor/ON or OFF

      ON: Engine switch on (IG)

      OFF: Engine switch off

      		 -
      OK
      When the engine switch is turned on (IG), ON is displayed on the tester.

    NG

    INSPECT IGNITION RELAY NO.2 (IG2) Click here

    OK

  2. CHECK ENGINE SWITCH (SWITCH CONDITION)


    1. Ensure the key is inside the cabin.

    2. Check that the power source mode changes as shown below each time the engine switch is pushed.

      OK
      off → on (ACC) → on (IG) → off

    OK

    NORMAL

    NG

    GO TO POWER SOURCE MODE DOES NOT CHANGE Click here

  3. INSPECT IGNITION RELAY NO.2 (IG2)


    1. A001AX6E32

      Remove the ignition relay No. 2 from the engine room No. 2 junction block.

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

      Standard resistance
      Tester Connection Condition Specified Condition
      3 - 5 When battery voltage is not applied to terminals 1 and 2 10 kΩ or higher
      3 - 5 When battery voltage is applied to terminals 1 and 2 Below 1 Ω

    NG

    REPLACE IGNITION RELAY NO.2 (IG2)

    OK

  4. CHECK HARNESS AND CONNECTOR (IG2 RELAY - MAIN BODY ECU AND BODY GROUND)

    A001B6ZE05
    *1 Front view of wire harness connector: (to Main Body ECU)
    *2 Engine Room No. 2 Junction Block
    *3 Ignition Relay No. 2 (IG2)

    1. Remove the IG2 relay from the engine room No. 2 junction block.

    2. Disconnect the L12 main body ECU connector.

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

      Standard resistance
      Tester Connection Condition Specified Condition
      Relay block ignition relay No. 2 terminal 1 - L12-11 (IG2D) Always Below 1 Ω
      Relay block ignition relay No. 2 terminal 2 - Body ground Always Below 1 Ω
      Relay block ignition relay No. 2 terminal 1 or L12-11 (IG2D) - Body ground Always 10 kΩ or higher

    OK

    REPLACE MAIN BODY ECU

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR