DTC    B2276    ACCR Signal Circuit Malfunction

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DESCRIPTION

This DTC is output when a malfunction is detected in the ACCR signal output by the main body ECU.

DTC Code
Detection Condition
Trouble Area
B2276
ACCR output circuit inside main body ECU or other related circuit is malfunctioning
  1. Main body ECU
  2. SFI system
  3. Wire harness or connector

WIRING DIAGRAM


A149375E03


INSPECTION PROCEDURE

1.CHECK WHETHER DTC OUTPUT RECURS

  1. Clear the DTCs.

  1. Check whether DTC B2276 recurs 50 seconds or more after the engine switch is turned on (IG).

    Result:
    Display (DTC output)
    		Proceed to
    B2276
    		A
    No DTC output
    		B



B
END (SYSTEM IS OK)
A


2.CHECK MAIN BODY ECU (ACCR VOLTAGE)


    B109177E03

  1. Disconnect the L12 main body ECU connector.

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

    Standard voltage:
    Tester Connection
    		Condition
    		Specified Condition
    L12-3 (ACCR) - Body ground
    		When operating the engine switch to crank the engine.
    		11 to 14 V



NG
Перейдите к шагу 4
OK


3.CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - ECM)

A150032E01

  1. Disconnect the L12 main body ECU connector.

  1. Disconnect the A13 ECM connector.

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

    Standard resistance:
    Tester Connection
    		Condition
    		Specified Condition
    L12-3 (ACCR) - A13-19 (ACCR)
    		Always
    		Below 1 Ω
    L12-3 (ACCR) or A13-19 (ACCR) - Body ground
    		Always
    		10 kΩ or higher



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


4.CHECK MAIN BODY ECU (OPERATION)

  1. Temporarily replace the main body ECU with a new or normally functioning one.

  1. Check whether DTC B2276 recurs by repeating the "CHECK WHETHER DTC OUTPUT RECURS" procedures above.

    OK:
    No DTC is output.



NG
GO TO SFI SYSTEM (Нажмите здесь)
OK

END (MAIN BODY ECU IS FAULTY)