Land Cruiser URJ200 URJ202 GRJ200 VDJ200 - THEFT DETERRENT / KEYLESS ENTRY

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 ConditionTrouble Area
B2284The circuit between the main body ECU and stop light switch, and the CAN communication signal between the main body ECU and ECM are inconsistent.
Main body ECU
Stop light switch
STOP fuse
Harness or connector

WIRING DIAGRAM

Dtc B2284 Brake Signal Malfunction. THEFT DETERRENT / KEYLESS ENTRY. Land Cruiser URJ200 URJ202 GRJ200 VDJ200

INSPECTION PROCEDURE

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

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

Main Body
Tester DisplayMeasurement Item/RangeNormal ConditionDiagnostic Note
Stop Light SWStop light switch/ON or OFFON: Brake pedal depressed
OFF: Brake pedal released		-
Result
ResultProceed to
Display on the intelligent tester does not change according to brake pedal operationA
Display on the intelligent tester changes according to brake pedal operationB
B
REPLACE MAIN BODY ECU
A
2.INSPECT FUSE (STOP)

Remove the STOP fuse from the engine room relay block.

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

  • Standard Resistance:
  • Tester ConnectionConditionSpecified Condition
    STOP fuseAlwaysBelow 1 Ω
NG
REPLACE FUSE
OK
3.INSPECT STOP LIGHT SWITCH
Dtc B2284 Brake Signal Malfunction. THEFT DETERRENT / KEYLESS ENTRY. Land Cruiser URJ200 URJ202 GRJ200 VDJ200

Disconnect the A30 stop light switch connector.

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

  • Standard Resistance:
  • Tester ConnectionSwitch ConditionSpecified Condition
    1 - 2Stop light switch pin not pushedBelow 1 Ω
    3 - 4Stop light switch pin pushedBelow 1 Ω
    1 - 2Stop light switch pin pushed10 kΩ or higher
    3 - 4Stop light switch pin not pushed10 kΩ or higher
NG
REPLACE STOP LIGHT SWITCH ()
OK
4.CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - BATTERY AND STOP LIGHT SWITCH)

Dtc B2284 Brake Signal Malfunction. THEFT DETERRENT / KEYLESS ENTRY. Land Cruiser URJ200 URJ202 GRJ200 VDJ200

Disconnect the 2B main body ECU connector.

Disconnect the A30 stop light switch connector.

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

  • Standard Voltage:
  • Tester ConnectionConditionSpecified Condition
    A30-2 - Body groundAlways11 to 14 V
  • Standard Resistance:
  • Tester ConnectionConditionSpecified Condition
    2B-22 (STP) - A30-1AlwaysBelow 1 Ω
    2B-22 (STP) or A30-1 - Body groundAlways10 kΩ or higher
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK
REPLACE MAIN BODY ECU
THEFT DETERRENT / KEYLESS ENTRY
Land Cruiser URJ200 URJ202 GRJ200 VDJ200
ENTRY AND START SYSTEM for Start Function