DTC C1A4B: Stop Light Relay Circuit [09/2014 - 10/2015]: Description
The skid control ECU assembly outputs a stop light operation signal to the stop light control relay. When the skid control ECU 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 power switch on (IG), the IG1 terminal voltage is between 11 and 14 V, there is no input signal to terminal STP2 of the skid control ECU assembly for 0.3 seconds or more when the stop light illumination output (STP0) of the skid control ECU assembly is ON, or the input signals to terminals STP and STP2 of the skid control ECU assembly are different for 0.3 seconds or more when the stop light illumination output (STP0) of the skid control ECU assembly is OFF. |
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