Dtc B2284 Brake 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)

CHECK FOR DTC (ENGINE CONTROL SYSTEM)

READ VALUE USING TECHSTREAM (STOP LIGHT SWITCH)

CHECK HARNESS AND CONNECTOR (STOP LIGHT SWITCH - INSTRUMENT PANEL JUNCTION BLOCK)

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

DTC B2284 Brake Signal Malfunction


DESCRIPTION

HINT:
When the main body ECU 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 is replaced, perform the registration procedures for the engine immobiliser system (COROLLA_ZRE142 RM000000UZ108OX.html).

DTC No.
DTC Detection Condition
Trouble Area
B2284
The brake signal circuit between the main body ECU and the stop light switch is malfunctioning and the CAN information is inconsistent
  1. Stop light switch
  2. CAN communication system
  3. ECM
  4. Main body ECU (instrument panel junction block)
  5. Wire harness or connector

WIRING DIAGRAM


Corolla. Zre142 Aze141.Theft Deterrent Keyless Entry.Smart Key System (For Entry Function). Dtc B2284 Brake Signal Malfunction


INSPECTION PROCEDURE


EMERGENCY ENGINE START CONTROL

  1. If there is a malfunction in the stop light switch or STOP fuse, their signals may not be correctly transmitted to the main body ECU. This may result in the engine not starting even if the engine switch is pressed while the brake pedal is depressed and the shift lever is in P.
    To activate the starter:

    1. Turn the engine switch from off to on (ACC).

    2. Press and hold the engine switch for 15 seconds.

1.CHECK FOR DTC (CAN COMMUNICATION SYSTEM)

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

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

    HINT:
    If the DTCs for the CAN communication system malfunction are output, inspect those DTCs first.
    OK:
    No DTC is output.


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


2.CHECK FOR DTC (ENGINE CONTROL SYSTEM)

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

  1. Check for DTC P0500 (Vehicle speed sensor A).

    OK:
    No DTC is output.


NG
GO TO ENGINE CONTROL SYSTEM (COROLLA_ZRE142 RM000002Y4K087X.html)
OK


3.READ VALUE USING TECHSTREAM (STOP LIGHT SWITCH)

  1. Connect the Techstream to the DLC3.

  1. Turn the engine switch on (IG).

  1. Check the Data List for proper functioning of the stop light switch.

    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
    		-
    OK:
    ON (brake pedal depressed) and OFF (brake pedal released) appear on the screen.


NG
Go to step 4
OK

REPLACE MAIN BODY ECU (INSTRUMENT PANEL JUNCTION BLOCK)

4.CHECK HARNESS AND CONNECTOR (STOP LIGHT SWITCH - INSTRUMENT PANEL JUNCTION BLOCK)


    Corolla. Zre142 Aze141.Theft Deterrent Keyless Entry.Smart Key System (For Entry Function). Dtc B2284 Brake Signal Malfunction

  1. Disconnect the A1 switch connector.

  1. Disconnect the 2B junction block connector.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    A1-1 - 2B-12
    		Always
    		Below 1 Ω
    A1-1 or 2B-12 - Body ground
    		Always
    		10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR (STOP LIGHT SWITCH - INSTRUMENT PANEL JUNCTION BLOCK)
OK


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


    Corolla. Zre142 Aze141.Theft Deterrent Keyless Entry.Smart Key System (For Entry Function). Dtc B2284 Brake Signal Malfunction

  1. Disconnect the 2E junction block connector.

  1. Disconnect the E50 ECU connector.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    2E-24 - E50-14 (STP)
    		Always
    		Below 1 Ω
    2E-24 or E50-14 (STP) - Body ground
    		Always
    		10 kΩ or higher


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

REPLACE INSTRUMENT PANEL JUNCTION BLOCK