Dtc B2286 Runnable Signal Malfunction

Vehicle Interior. Corolla. Zre142 Aze141
Theft Deterrent Keyless Entry. Corolla. Zre142 Aze141

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK FOR DTC (CAN COMMUNICATION SYSTEM)

READ VALUE USING TECHSTREAM

CHECK HARNESS AND CONNECTOR (MAIN BODY ECU (INSTRUMENT PANEL JUNCTION BLOCK) - ECM)

DTC B2286 Runnable Signal Malfunction


DESCRIPTION

This DTC is output when serial communication signals and CAN communication signals in the circuit between the main body ECU (instrument panel junction block) and ECM are inconsistent.
HINT:
When the main body ECU (instrument panel junction block) is replaced with a new one and the cable from 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.
After the main body ECU (instrument panel junction block) is replaced, perform the registration procedures for the engine immobiliser system (COROLLA_ZRE142 RM000000UZ108OX.html).

DTC No.
DTC Detection Condition
Trouble Area
B2286
Serial communication signals and CAN communication signals in the circuit between the main body ECU (instrument panel junction block) and ECM are inconsistent.
  1. CAN communication system
  2. ECM
  3. Main body ECU (instrument panel junction block)
  4. Wire harness or connector

WIRING DIAGRAM


Corolla. Zre142 Aze141.Theft Deterrent Keyless Entry.Smart Key System (For Entry Function). Dtc B2286 Runnable Signal Malfunction


INSPECTION PROCEDURE

1.CHECK FOR DTC (CAN COMMUNICATION SYSTEM)

  1. Clear the DTCs (COROLLA_ZRE142 RM000000YEH0CGX.html).

  1. Check for CAN communication system (COROLLA_ZRE142 RM000000WI60ACX.html).

    HINT:
    If the DTCs for the CAN communication system malfunction are output, inspect those DTCs first.
    OK:
    DTC is not output.


NG
GO TO CAN COMMUNICATION SYSTEM (COROLLA_ZRE142 RM000002B6V03LX.html)
OK


2.READ VALUE USING TECHSTREAM

  1. Connect the Techstream to the DLC3.

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

    HINT:
    When using the Techstream with the engine switch off, turn on and off any of the door courtesy light switches repeatedly at 1.5 second intervals or less until communication between the Techstream and vehicle starts.

    Main Body
    Tester Display
    		Measurement Item/Range
    		Normal Condition
    		Diagnostic Note
    Engine Condition
    		Engine condition/STOP or RUN
    		Stop: Engine is stopped
    RUN: Engine is running
    		-


NG
Go to step 3
OK

REPLACE MAIN BODY ECU (INSTRUMENT PANEL JUNCTION BLOCK)

3.CHECK HARNESS AND CONNECTOR (MAIN BODY ECU (INSTRUMENT PANEL JUNCTION BLOCK) - ECM)


  1. Disconnect the A50 ECM connector.


    Corolla. Zre142 Aze141.Theft Deterrent Keyless Entry.Smart Key System (For Entry Function). Dtc B2286 Runnable Signal Malfunction

  1. Disconnect the E52 ECU connector.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    E52-2 (TACH) - A50-15 (TACH)
    		Always
    		Below 1 Ω
    E52-2 (TACH) or A50-15 (TACH) - Body ground
    		Always
    		10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR (MAIN BODY ECU (INSTRUMENT PANEL JUNCTION BLOCK) - ECM)
OK

REPLACE MAIN BODY ECU (INSTRUMENT PANEL JUNCTION BLOCK)