The DBC function is the shorten word of Downhill Brake Control function. When a vehicle goes down the hill, just pushing the DBC switch enables the car to keep its vehicle's speed at a constant value without operating the brake pedal. The DBC function is operated when the vehicle is on the decline and its velocity is under the predetermined speed.
This DTC is set if the DBC switch has a short circuit and the DBC function is inhibited.
Item | Detecting Condition | Possible cause |
DTC Strategy |
•
Monitoring DBC switch circuit |
•
Short in the DBC switch circuit
•
Faulty DBC switch |
Enable Conditions |
•
When the HECU detects a continuous signal of DBC switch pressed more than 1 minute | |
Fail Safe |
•
Inhibit the DBC function and allow the ABS/EBD/ESP control.
•
The DBC warning lamp is activated. |
Engine ON | DBC Switch "HIGH" | DBC Switch "LOW" |
7.0V ~ 16.0V | 0V ~ 3.0V |
