ENTRY AND START SYSTEM (for Start Function), Diagnostic DTC:B2276

DTC Code DTC Name
B2276 ACCR Signal Circuit Malfunction

DESCRIPTION

This DTC is output when the ACCR output circuits inside the power source control ECU are open or short.

Tech Tips

When the power source control ECU is replaced with a new one and the negative (-) battery terminal is connected, the power source mode becomes the IG-ON mode. When the battery is removed and reinstalled, the power source mode that was selected when the battery was removed is restored.

DTC No. DTC Detection Condition Trouble Area
B2276 ACCR output circuit inside power source control ECU or other related circuit is malfunctioning

  • Power source control ECU

  • ECM

  • Wire harness or connector

WIRING DIAGRAM

A0160FGE18

INSPECTION PROCEDURE

PROCEDURE


  1. CHECK FOR DTC


    1. Clear the DTC Click here.

    2. Turn the engine switch on (IG).

    3. After 50 seconds have elapsed, check if the trouble occurs again.

      OK
      DTC B2276 is output.

    NG

    CHECK HARNESS AND CONNECTOR (POWER SOURCE CONTROL ECU - ECM) Click here

    OK

    USE SIMULATION METHOD TO CHECK Click here

  2. CHECK HARNESS AND CONNECTOR (POWER SOURCE CONTROL ECU - ECM)


    1. Disconnect the J55 connector from power source control ECU.

      A0162H6E02

    2. Disconnect the A6 connector from ECM.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      J55-31 (CTSW) - A6-19 (ACCR) Always Below 1Ω
      J55-31 (CTSW) or A6-19 (ACCR) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CONTROL ECU - ECM)

    OK

  3. CHECK POWER SOURCE CONTROL ECU


    1. A015YHVE44

      Reconnect the J55 connector to the power source control ECU.

    2. Reconnect the A6 connector to the ECM.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      J55-31 (CTSW) - Body ground Brake pedal depressed, shift lever in P, engine switch is pushed once → on (IG) 0.1 to 0.8 V*1 → output voltage at terminal AM1 or AM" is -2 V or more.

      Tech Tips

      *1: Voltage is output only when the engine is cranking


    NG

    REPLACE ECM Click here

    OK

    REPLACE POWER SOURCE CONTROL ECU