DTC C1A05: Stop Light Switch Circuit: Description
When the brake pedal is depressed, the stop light switch assembly sends a brake pedal operation signal to the driving support ECU. After reception of this signal, the driving support ECU cancels the radar cruise control system. When the driving support ECU detects a problem in the stop light switch circuit, DTC C1A05 is stored.
| DTC Code |
DTC Detection Condition |
Trouble Area |
| C1A05 |
- Diagnosis condition for each system:
- Radar cruise control system:
- Vehicle is being driven at speed of approximately 50 km/h (31 mph) or more and ACC main switch is on
- Lane keeping assist system:
- Vehicle is being driven at speed of approximately 50 km/h (31 mph) or more and lane-keeping assist main switch is on
- Driving support ECU detects malfunction* in signal from stop light switch assembly
*: Signal is determined to be malfunctioning when ST1- signal and STP signal do not match
|
- Stop light switch assembly
- Driving support ECU
- Harness or connector (stop light signal circuit)
|