DTC C1A4B: Stop Light Relay Circuit [03/2014 - ]: Description
The stop light switch assembly sends a brake pedal operation signal to the driving support ECU. Based on the signal, the driving support ECU detects the operation of the brake pedal.
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| C1A4B | While the engine switch is on (IG). When the skid control ECU detects a malfunction in the stop light relay circuit, it sends a malfunction signal to the driving support ECU via CAN communication and the driving support ECU stores this DTC. |
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