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Home >> Toyota >> 2012 >> Matrix Base, Standard Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 334 (Smart Key System (Keyless Entry) (Diagnostic Codes & Symptom Tests)) >> SMART KEY SYSTEM (for Start Function) >> DTC B2284: Brake Signal Malfunction >> Description
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DTC B2284: Brake Signal Malfunction: Description

WARNING: This page is about a different car, the 2012 Toyota Corolla. However, it is still accessible from the selected car via links, so may be relevant.

HINT: 

When the main body ECU is replaced with a new one and the cable from the negative (-) battery terminal is connected, the power source mode becomes the IG-ON mode. When the battery is removed and reinstalled, the power source mode that was selected when the battery was removed is restored.

After the main body ECU is replaced, perform the registration procedures for the engine immobilizer system. Refer to HOW TO PROCEED WITH TROUBLESHOOTING .

DTC No. DTC Detection Condition Trouble Area
B2284 The brake signal circuit between the main body ECU and the stop light switch is malfunctioning and the CAN information is inconsistent
  • Stop light switch
  • CAN communication system
  • ECM
  • Main body ECU (instrument panel junction block)
  • Wire harness or connector