DESCRIPTION
This DTC is stored when the brake signal sent via direct line and the brake signal sent via CAN communication do not match.
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.
DTC Code |
DTC Detection Condition |
Trouble Area |
DTC Output Confirmation Operation |
---|---|---|---|
B2284 |
The brake signal sent via direct line and the brake signal sent via CAN communication (1-trip detection logic*) do not match. |
|
Connect the cable to the negative (-) battery terminal, release the brake pedal and wait 20 seconds or more. Then depress the brake pedal for 20 seconds or more. |
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 indicator in the combination meter is not illuminated in green). However, the engine can be started by turning the engine switch on (ACC) and then pressing and holding it.
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- |
WIRING DIAGRAM
CAUTION / NOTICE / HINT
HINT:
Check the connector connection to the terminal to make sure that there is no abnormality such as a loose connection, deformation, etc.
NOTICE:
Click here
Troubleshoot the smart key system (for Start Function) after confirming that the communication systems are functioning properly.
DTC |
Data List Item |
Active Test Item |
---|---|---|
B2284 |
Power Source Control
ABS/VSC/TRAC
|
- |
PROCEDURE
1. |
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 |
State of brake pedal/ON or OFF |
ON: Brake pedal depressed OFF: Brake pedal released |
|
OK:
ON (brake pedal is depressed) and OFF (brake pedal is released) appear on the screen.
NG | ![]() |
GO TO SFI SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING) |
|
2. |
CHECK HARNESS AND CONNECTOR (POWER SOURCE) |
NG | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR IN CIRCUIT CONNECTED TO POWER SOURCE |
|
3. |
CHECK HARNESS AND CONNECTOR (GROUND) |
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 C27 certification ECU (smart key ECU assembly) connector.
(b) Disconnect the S10 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 |
---|---|---|
C27-2 (STP1) - S10-1 |
Always |
Below 1 Ω |
*a |
Front view of wire harness connector (to Stop Light Switch Assembly) |
NG | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
5. |
CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) |
(a) Reconnect the C27 and C29 certification ECU (smart Key ECU assembly) connectors.
(b) Reconnect the S10 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 |
Inspection
INSPECTION
PROCEDURE
1. INSPECT OIL PUMP RELIEF VALVE
(a) Coat the oil pump relief valve with engine oil and check that it
falls smoothly into the valve hole by its own weight.
If the valve does not fall smoothly, replace the timing chain cover assembly.
...
Inspection
INSPECTION
PROCEDURE
1. INSPECT COUNTER GEAR
(a) Using a dial indicator and 2 V-blocks, measure the counter gear runout.
Maximum runout:
0.03 mm (0.00118 in.)
If the runout is more than the maximum, replace the counter gear.
HINT:
Measure the 3 areas shown in the illust ...
Open in One Side of Bus 5 Branch Line
DESCRIPTION
When the CAN bus main lines are normal (no open, short to ground, short to +B
or short between lines) and there is an ECU or sensor on the "Communication Bus
Check" screen that is indicated as not communicating or whose connection status
on the "Communication Bus Ch ...