DTC C1A05: Stop Light Switch Circuit [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.
When the brake pedal is depressed, the stop light switch assembly sends a brake pedal operation signal to the driving support ECU assembly. After reception of this signal, the driving support ECU assembly cancels the radar cruise control system. When the driving support ECU assembly detects a malfunction in the stop light switch circuit, DTC C1A05 is stored.
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| C1A05 | Voltages of terminals ST1- and STP- of driving support ECU assembly are both below 1 V for 1 second |
|