DTC    B2286    Runnable Signal Malfunction

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DESCRIPTION

The power source control ECU and the ECM are connected by a cable and the BEAN. If the cable information and BEAN information are inconsistent, this DTC will be output.

DTC No.
DTC Detection Condition
Trouble Area
B2286
Cable and BEAN between power source control ECU and ECM are inconsistent
  1. Power source control ECU
  1. SFI system
  1. Wire harness

WIRING DIAGRAM


A109249E02


INSPECTION PROCEDURE

1.READ VALUE OF INTELLIGENT TESTER (ENGINE CONDITION)

  1. Check the Data List for proper functioning of the engine condition.

    Power source control ECU:

    Item
    		Measurement Item/Display (Range)
    		Normal Condition
    		Diagnostic Note
    E/G Cond
    		Engine condition/ RUN or STOP
    		RUN: Engine running
    STOP: Engine stopped
    		-

OK:
RUN (engine running) appears on screen.
STOP (engine stopped) appears on screen.



NG
Go to step 2
OK

REPLACE POWER SOURCE CONTROL ECU 

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


    A109243E03

  1. Disconnect the L73 ECU connector.

  1. Disconnect the A7 ECM connector.

  1. Measure the resistance of the wire harness side connectors.

    Standard resistance:
    Tester Connection
    		Specified Condition
    L73-2 (TACH) - A7-16 (TACH)
    		Below 1 Ω
    L73-2 (TACH) or A7-16 (TACH) - Body ground
    		10 kΩ or higher



NG
REPAIR OR REPLACE HARNESS AND CONNECTOR
OK


3.CHECK POWER SOURCE CONTROL ECU

  1. Temporarily replace the power source control ECU with a new or normally functioning one.

  1. Check that the engine starts normally.

    OK:
    Engine starts normally.



NG
GO TO SFI SYSTEM
OK

END (POWER SOURCE CONTROL ECU IS FAULTY)