B2284

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

DTC B2284 - Brake Signal Malfunction

DESCRIPTION

This DTC is output when: 1) the brake signal circuit between the power source control ECU and the stop light switch is malfunctioning; and 2) the BEAN information is inconsistent.






WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. READ VALUE USING TECHSTREAM (STOP LIGHT SWITCH)
(a) Check the DATA LIST for proper functioning of the stop light switch.
Power source control ECU:






OK:
ON (brake pedal depressed) appears on screen.
NG -- INSPECT FUSE (STOP SW)
OK -- REPLACE POWER SOURCE CONTROL ECU
2. INSPECT FUSE (STOP SW)
(a) Remove the STOP SW fuse from cowl side J/B RH.
(b) Measure the resistance of the fuse.
Standard resistance:
Below 1 Ohms
NG -- REPLACE FUSE
OK -- Continue to next step.

3. INSPECT STOP LIGHT SWITCH




(a) Remove the switch.
(b) Measure the resistance of the switch.
Standard resistance:






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

4. CHECK WIRE HARNESS (STOP LIGHT SWITCH - POWER SOURCE CONTROL ECU AND BATTERY)




(a) Disconnect the A35 switch connector.
(b) Disconnect the K73 ECU connector.
(c) Measure the voltage and resistance of the wire harness side connectors.
Standard voltage:






Standard resistance:






NG -- REPAIR OR REPLACE HARNESS AND CONNECTOR
OK -- Continue to next step.

5. CHECK AND REPLACE POWER SOURCE CONTROL ECU
(a) Temporarily replace the power source control ECU with a new or normally functioning one.
(b) Check that the engine starts normally.
OK:
Engine starts normally.
NG -- GO TO LIGHTING SYSTEM
OK -- REPLACE POWER SOURCE CONTROL ECU