DESCRIPTION
This DTC is stored when the brake signal sent via direct line and the brake signal sent via CAN communication do not match.
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
Note |
---|---|---|---|---|
B2284 |
Brake Signal Malfunction |
The brake signal sent via direct line and the brake signal sent via CAN communication do not match. (1-trip detection logic*) |
|
|
Vehicle Condition when Malfunction Detected |
Fail-safe Function when Malfunction Detected |
---|---|
With the electrical key transmitter sub-assembly in the cabin, even if an engine start operation is performed, the engine does not start (the key indicator display is not displayed on the multi-information display). However, the engine can be started by turning the engine switch on (ACC) and then pressing and holding it.
|
- |
DTC No. |
Data List and Active Test |
---|---|
B2284 |
Power Source Control
ABS/VSC/TRC/EPB
|
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
Click here
Click here
HINT:
When the cable is disconnected and reconnected to the negative (-) battery terminal, the power source mode returns to the state it was in before the cable was disconnected.
PROCEDURE
1. |
READ VALUE USING TECHSTREAM (STOP LIGHT SWITCH1) |
(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.
Body Electrical > Power Source Control > Data List
Tester Display |
Measurement Item |
Range |
Normal Condition |
Diagnostic Note |
---|---|---|---|---|
Stop Light Switch1 |
State of brake pedal |
OFF or ON |
OFF: Brake pedal released ON: Brake pedal depressed |
|
Tester Display |
---|
Stop Light Switch1 |
OK:
The Techstream display changes correctly in response to the brake pedal operation.
OK |
GO TO VEHICLE STABILITY CONTROL SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING) |
|
2. |
CHECK HARNESS AND CONNECTOR (POWER SOURCE) |
Click here
NG |
REPAIR OR REPLACE HARNESS OR CONNECTOR IN CIRCUIT CONNECTED TO POWER SOURCE |
|
3. |
CHECK HARNESS AND CONNECTOR (GROUND) |
Click here
NG |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
4. |
CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - STOP LIGHT SWITCH ASSEMBLY) |
(a) Disconnect the M67 certification ECU (smart Key ECU assembly) connector.
(b) Disconnect the A45 stop light switch assembly connector.
(c) Measure the voltage according to the value(s) in the table below. Standard Voltage:
|
|
(d) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
M67-25 (STP1) - A45-3 (L) |
Always |
Below 1 Ω |
A45-2 (GND) - Body ground |
Always |
Below 1 Ω |
NG |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
5. |
CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) |
(a) Reconnect the M67 certification ECU (smart Key ECU assembly) connectors.
(b) Reconnect the A45 stop light switch assembly connector.
(c) Measure the voltage according to the value(s) in the table below. Standard Voltage:
|
|
OK |
REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) |
NG |
REPLACE STOP LIGHT SWITCH ASSEMBLY |
Toyota CH-R Service Manual > Power Steering Ecu: Installation
INSTALLATION
PROCEDURE
1. INSTALL ELECTRIC POWER STEERING MOTOR SHAFT DAMPER
Grease
(a) Apply grease to a new electric power steering motor shaft damper.
NOTICE:
First wipe off the existing grease from the serrated part, and then apply the
dedicated grease supp ...
Toyota CH-R Service Manual > Meter / Gauge System: Dtc Check / Clear
DTC CHECK / CLEAR
CHECK DTC
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch ON.
(c) Turn the Techstream on.
(d) Enter the following menus: Body Electrical / Combination Meter / Trouble
Codes.
(e) Check for DTCs.
Body Electrical > Combination Meter > Trouble Codes
...