DTC B2284: Brake Signal Malfunction [08/2013 - ]: Description
WARNING: This page is about a different car, the 2014 Lexus ES 300h. However, it is still accessible from the selected car via links, so may be relevant.
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 (-) auxiliary 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 (-) auxiliary battery terminal, release the brake pedal and wait 20 seconds or more. Then depress the brake pedal for 20 seconds or more. |
- *: Only detected while a malfunction is present and the power switch is on (IG).
VEHICLE CONDITION AND FAIL-SAFE FUNCTION WHEN MALFUNCTION DETECTED
| Vehicle Condition when Malfunction Detected | Fail-safe Function when Malfunction Detected |
|---|---|
With the electrical key transmitter sub-assembly in the cabin, even if a hybrid control system start operation is performed, the hybrid control system does not start (the multi-information display message (smart warning light) is not displayed). However, the hybrid control system can be started by turning the power switch on (ACC) and then pressing and holding it.
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