ELECTRIC POWER CONTROL SYSTEM, Diagnostic DTC:B22A0

DTC Code DTC Name
B22A0 IG2 Terminal Circuit Low

DESCRIPTION

The electric power control ECU monitors the IG (IG2) voltage. When there is no voltage input to IG (IG2), this DTC is output.

DTC Code DTC Detection Condition Trouble Area
B22A0 IG (IG2) signal is input via CAN communication, but there is no IG (IG2) input voltage
  • P IG2 fuse

  • ECU-IG fuse

  • Engine room No. 2 junction block, relay block

  • Passenger side junction block (Electric power control ECU)

  • Wire harness

WIRING DIAGRAM

A01GMNTE03

INSPECTION PROCEDURE

PROCEDURE


  1. CHECK PASSENGER SIDE JUNCTION BLOCK (IG INPUT VOLTAGE)

    A01GLK5E01

    1. Disconnect the PK junction block connector.

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

      Standard voltage
      Tester Connection Switch Condition Specified Condition
      PK-1 (IG) - Body ground Engine switch on (IG) 11 to 14 V

    NG
    OK
  2. INSPECT FUSE (P IG2)


    1. Remove the P IG2 fuse from the passenger side junction block.

    2. Measure the resistance of the fuse.

      Standard resistance
      Tester Connection Condition Specified Condition
      P IG2 fuse Always Below 1 Ω

    NG
    OK
  3. CHECK HARNESS AND CONNECTOR (PASSENGER SIDE J/B - ENGINE ROOM NO. 2 J/B, R/B)

    A01GLXLE01

    1. Disconnect the PK and 2C junction block connectors.

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

      Standard resistance
      Tester Connection Condition Specified Condition
      PK-1 (IG) - 2C-30 Always Below 1 Ω
      PK-1 (IG) or 2C-30 - Body ground Always 10 kΩ or higher

    NG
    OK
  4. CHECK HARNESS AND CONNECTOR (ENGINE ROOM NO. 2 JUNCTION BLOCK, RELAY BLOCK - BATTERY)

    A01GLCOE01

    1. Disconnect the 2E junction block connector.

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

      Standard voltage
      Tester Connection Condition Specified Condition
      2E-1 - Body ground Always 11 to 14 V

    NG
    OK
  5. INSPECT FUSE (ECU-IG)


    1. Remove the ECU-IG fuse from the engine room No. 2 junction block.

    2. Measure the resistance of the fuse.

      Standard resistance
      Tester Connection Condition Specified Condition
      ECU-IG fuse Always Below 1 Ω

    NG
    OK
  6. CHECK FOR DTC (B2273)


    1. Check for DTC B2273 for 1UR-FE Click here or 1UR-FSE Click here.

      Result
      Result Proceed to
      DTC B2273 is not output A
      DTC B2273 is output (for 1UR-FE) B
      DTC B2273 is output (for 1UR-FSE) C

    B
    C
    A