Dtc B2284 Brake Signal Malfunction

Vehicle Interior. Land Cruiser. Urj200, 202 Grj200 Vdj200
Theft Deterrent Keyless Entry. Land Cruiser. Urj200, 202 Grj200 Vdj200

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

READ VALUE USING INTELLIGENT TESTER (STOP LIGHT SWITCH)

INSPECT FUSE (STOP)

INSPECT STOP LIGHT SWITCH

CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - BATTERY AND STOP LIGHT SWITCH)

DTC B2284 Brake Signal Malfunction


DESCRIPTION

This DTC is stored when there is an inconsistency between the circuit between the main body ECU and stop light switch, and the CAN communication signal between the main body ECU and ECM.

DTC No.
Detection Condition
Trouble Area
B2284
The circuit between the main body ECU and stop light switch, and the CAN communication signal between the main body ECU and ECM are inconsistent.
  1. Main body ECU
  2. Stop light switch
  3. STOP fuse
  4. Harness or connector

WIRING DIAGRAM


Land Cruiser. Urj200, 202 Grj200 Vdj200.Theft Deterrent Keyless Entry.Entry And Start System (For Entry Function). Dtc B2284 Brake Signal Malfunction


INSPECTION PROCEDURE

1.READ VALUE USING INTELLIGENT TESTER (STOP LIGHT SWITCH)

  1. Use the Data List to check if the stop light switch is functioning properly.

    Main Body
    Tester Display
    		Measurement Item/Range
    		Normal Condition
    		Diagnostic Note
    Stop Light SW
    		Stop light switch/ON or OFF
    		ON: Brake pedal depressed
    OFF: Brake pedal released
    		-
    Result
    Result
    		Proceed to
    Display on the intelligent tester does not change according to brake pedal operation
    		A
    Display on the intelligent tester changes according to brake pedal operation
    		B


B
REPLACE MAIN BODY ECU
A


2.INSPECT FUSE (STOP)

  1. Remove the STOP fuse from the engine room relay block.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    STOP fuse
    		Always
    		Below 1 Ω


NG
REPLACE FUSE
OK


3.INSPECT STOP LIGHT SWITCH
Land Cruiser. Urj200, 202 Grj200 Vdj200.Theft Deterrent Keyless Entry.Entry And Start System (For Entry Function). Dtc B2284 Brake Signal Malfunction

  1. Disconnect the A30 stop light switch connector.

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

    Standard Resistance:
    Tester Connection
    		Switch Condition
    		Specified Condition
    1 - 2
    		Stop light switch pin not pushed
    		Below 1 Ω
    3 - 4
    		Stop light switch pin pushed
    		Below 1 Ω
    1 - 2
    		Stop light switch pin pushed
    		10 kΩ or higher
    3 - 4
    		Stop light switch pin not pushed
    		10 kΩ or higher


NG
REPLACE STOP LIGHT SWITCH (Click here)
OK


4.CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - BATTERY AND STOP LIGHT SWITCH)

Land Cruiser. Urj200, 202 Grj200 Vdj200.Theft Deterrent Keyless Entry.Entry And Start System (For Entry Function). Dtc B2284 Brake Signal Malfunction

  1. Disconnect the 2B main body ECU connector.

  1. Disconnect the A30 stop light switch connector.

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

    Standard Voltage:
    Tester Connection
    		Condition
    		Specified Condition
    A30-2 - Body ground
    		Always
    		11 to 14 V
    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    2B-22 (STP) - A30-1
    		Always
    		Below 1 Ω
    2B-22 (STP) or A30-1 - Body ground
    		Always
    		10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

REPLACE MAIN BODY ECU