DTC P059A-71: Active Grille Air Shutter "A" Actuator Stuck; DTC P059A-79: Active Grille Air Shutter "A" Mechanical Linkage Failure [11/2023 - ]: Description
WARNING: This page is about a different variant/trim than selected.
The grille shutter system is composed of the radiator shutter sub-assembly and swing grille actuator assembly.
When the certain vehicle conditions are met, the grille shutter system operates the swing grille actuator assembly to open and close the radiator shutter sub-assembly and control the volume of air flowing through the radiator assembly into the engine compartment. This results in increased thermal efficiency and increased fuel economy due to reduced aerodynamic drag. This control is performed based on signals received via CAN communication: vehicle speed signal, engine coolant temperature signal, hybrid inverter coolant temperature signal, ambient temperature signal and refrigerant pressure.
CONTROL LIST
| Control | Description |
|---|---|
| Closing Operation Control | When the grille shutter is open and the vehicle conditions are met, the grille shutter closes in order to improve fuel economy (reduce air resistance) and reduce engine warm up time. |
| Opening Operation Control | When the grille shutter is closed and the vehicle conditions are met, the grille shutter opens to ensure radiator and engine cooling air. |
| Ignition Switch Off-linked Opening Operation Control | When the ignition switch is turned off and the vehicle is stopped with the grille shutter closed, the grille shutter opens. |
| Winter Control Mode | During operation in low temperatures when there is a possibility of the grille shutter being stuck due to being frozen, a malfunction judgment is not made even though it is detected that the grille shutter is stuck. |
| Retry Operation | If a mechanical malfunction is detected during a grille shutter operation, the operation will be attempted again. |
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | MIL | Memory | Note |
|---|---|---|---|---|---|---|
| P059A-71 | Active Grille Air Shutter "A" Actuator Stuck | A signal from the swing grille actuator assembly indicating that the grille shutter is stuck is detected for 7.86 seconds or more (2 trip detection logic). |
|
Comes on | DTC stored |
|
| P059A-79 | Active Grille Air Shutter "A" Mechanical Linkage Failure | A signal from the swing grille actuator assembly indicating a malfunction is detected for 7.86 seconds or more (2 trip detection logic). |
|
Comes on | DTC stored |
|