Tech Tips
Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.
Inspect the fuses and relays related to this system before inspecting the suspected areas below.
| Symptom | Suspected Area | Link |
|---|---|---|
| Electric parking brake does not operate | Proceed to "Electric Parking Brake does not Operate" | |
| Parking brake indicator light does not illuminate (red) or turn off when parking brake is manually engaged and disengaged | Proceed to "Electric Parking Brake does not Operate" | |
| Electric parking brake AUTO function (shift-linked function) does not operate (shift-linked parking brake does not lock or release) | Proceed to "Electric Parking Brake AUTO Function Circuit" | |
| AUTO indicator light does not change (does not illuminate or turn off) when mode switching (AUTO or manual) is performed | Proceed to "Electric Parking Brake AUTO Indicator Light Circuit" | |
| Electric parking brake switch indicator light on electric parking brake switch assembly does not illuminate or turn off when lock and release operations are performed | Electric parking brake switch indicator light drive circuit Tech Tips When a malfunction occurs, the AUTO indicator light also does not illuminate or turn off. |
|
| Wire harness or connector (electric parking brake switch assembly - skid control ECU (brake actuator assembly)) | - | |
| Electric parking brake switch assembly | ||
| Skid control ECU (brake actuator assembly) |