B2284

2UR-FSE STARTING: SMART ACCESS SYSTEM WITH PUSH-BUTTON START: B2284: Brake Signal Malfunction
B2284 - Brake Signal Malfunction

DESCRIPTION

This DTC is output when: 1) the brake signal circuit between the main body ECU and the stop light switch is malfunctioning; and 2) the CAN information is inconsistent.





WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. READ VALUE USING THE TECHSTREAM (STOP LIGHT SWITCH)

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

Main Body





Result





B -- REPLACE MAIN BODY ECU
A -- Continue to next step.

2. INSPECT FUSE (STOP)

(a) Remove the STOP fuse from the main body ECU.

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

Standard resistance:





NG -- REPLACE FUSE
OK -- Continue to next step.

3. INSPECT STOP LIGHT SWITCH





(a) Disconnect the A35 stop light switch connector.

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

Standard resistance:





NG -- REPLACE STOP LIGHT SWITCH
OK -- Continue to next step.

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





(a) Disconnect the DH main body ECU connector.

(b) Disconnect the A35 stop light switch connector.

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

Standard voltage:





Standard resistance:





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

OK -- REPLACE MAIN BODY ECU