DESCRIPTION
The power management control ECU receives brake signal information from 2 sources. It receives a signal from the stop light switch assembly via a direct line, and a signal from the ECM via CAN. If the information from these 2 sources is inconsistent, this DTC will be stored.
DTC No. |
DTC Detection Condition |
Trouble Area |
---|---|---|
B2284 |
Stop light switch assembly operation information received by the power management control ECU from the stop light switch assembly via a direct line and stop light switch assembly information from the ECM via CAN are inconsistent. |
|
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
HINT:
Check the connector connection to the terminal to make sure that there is no abnormality such as a loose connection, deformation, etc.
PROCEDURE
1. |
CHECK HARNESS AND CONNECTOR (BATTERY - POWER MANAGEMENT CONTROL ECU) |
NG | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR (BATTERY - POWER MANAGEMENT CONTROL ECU) |
|
2. |
CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - BODY GROUND) |
NG | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER MANAGEMENT CONTROL ECU - BODY GROUND) |
|
3. |
INSPECT STOP LIGHT SWITCH ASSEMBLY |
(a) Remove the stop light switch assembly (See page
|
|
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
1 - 2 |
Pushed |
10 kΩ or higher |
3 - 4 |
Pushed |
10 kΩ or higher |
1 - 2 |
Not pushed |
Below 1 Ω |
3 - 4 |
Not pushed |
Below 1 Ω |
NG | ![]() |
REPLACE STOP LIGHT SWITCH ASSEMBLY |
|
4. |
CHECK HARNESS AND CONNECTOR (STOP LIGHT SWITCH ASSEMBLY - POWER MANAGEMENT CONTROL ECU) |
(a) Disconnect the D42 connector from the power management control ECU.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
D42-10 (STP1) - A35-1 |
Always |
Below 1 Ω |
D42-10 (STP1) - Body ground |
Always |
10 kΩ or higher |
*1 |
Front view of wire harness connector (to Power Management Control ECU) |
*2 |
Front view of wire harness connector (to Stop Light Switch Assembly) |
NG | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR (STOP LIGHT SWITCH ASSEMBLY - POWER MANAGEMENT CONTROL ECU) |
|
5. |
READ VALUE USING TECHSTREAM (STOP LIGHT SWITCH ASSEMBLY) |
(a) Connect the Techstream to the DLC3.
(b) Turn the engine switch on (IG).
(c) Turn the Techstream on.
(d) Enter the following menus: Body Electrical / Power Source Control / Data List.
(e) Read the Data List according to the display on the Techstream.
Power Source Control
Tester Display |
Measurement Item/Range |
Normal Condition |
Specified Condition |
---|---|---|---|
Stop Light Switch1 |
Stop light switch1/ON or OFF |
ON: Brake pedal depressed OFF: Brake pedal released |
- |
Result |
Proceed to |
---|---|
ON and OFF do not appear on the screen. |
A |
ON and OFF appear on the screen (for 2GR-FE). |
B |
ON and OFF appear on the screen (for 1AR-FE). |
C |
A | ![]() |
REPLACE POWER MANAGEMENT CONTROL ECU |
B | ![]() |
GO TO SFI SYSTEM (for 2GR-FE) |
C | ![]() |
GO TO SFI SYSTEM (for 1AR-FE) |
System Diagram
SYSTEM DIAGRAM
Transmitting ECU
(Transmitter)
Receiving ECU
Signal
Communication Method
ECM
Power Steering ECU
Engine speed signal
Engine variation inform ...
Inspection
INSPECTION
PROCEDURE
1. INSPECT BRAKE DISC INSIDE DIAMETER
(a) Using a brake drum gauge or an equivalent tool, measure the inside
diameter of the disc.
Standard inside diameter of a new disc:
190 mm (7.48 in.)
Maximum inside diamete ...
Precaution
PRECAUTION
1. EXPRESSIONS OF IGNITION SWITCH
The type of ignition switch used on this model differs according to the specifications
of the vehicle.
The expressions listed in the table below are used in this section.
Expression
Switc ...