DTC C1A4B: Stop Light Relay Circuit [09/2014 - 10/2015]: Description
The brake actuator assembly outputs a stop light operation signal to the stop light control relay. When the brake actuator assembly detects a malfunction in the circuit related to the stop light, it informs the driving support ECU via CAN communication and stores DTC C1A4B.
| DTC Code | DTC Detection Condition | Trouble Area |
|---|---|---|
| C1A4B | When the engine switch on (IG), the IG1 terminal voltage is between 11 and 14 V, there is no input signal to terminal STP2 of the brake actuator assembly for 0.3 seconds or more when the stop light illumination output (STPO) of the brake actuator assembly is ON, or the input signals to terminals STP and STP2 of the brake actuator assembly are different for 0.3 seconds or more when the stop light illumination output (STPO) of the brake actuator assembly is OFF. |
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