Typical Malfunction Thresholds
WARNING: This page is about a different car, the 2025 Lexus NX 350h, 2024 Lexus NX 350h, 2023 Lexus NX 350h, and 2022 Lexus NX 350h. However, it is still accessible from the selected car via links, so may be relevant.
C0597 (CASE 1)
| Booster circuit voltage drop signal | On |
C0597 (CASE 2)
| One of the following conditions is met | - |
| Solenoid load open/short to ground signal | Off |
| Solenoid load leakage signal | Off |
| Solenoid overcurrent signal | Off |
| Solenoid freewheeling terminal disconnection signal | Off |
| Solenoid driver overtemperature signal | Off |
| Solenoid GND terminal disconnection signal | Off |
| ASIC ERRIN malfunction | Not detected |
| Power supply voltage for solenoid | Higher than 1.3 V |
C0597 (CASE 3 AND 4)
| One of the following conditions is met | - |
| Solenoid load open/short to ground signal | On |
| Solenoid load leakage signal | Off |
| Solenoid overcurrent signal | Off |
| Solenoid freewheeling terminal disconnection signal | Off |
| Solenoid driver overtemperature signal | Off |
| Solenoid GND terminal disconnection signal | Off |
| Solenoid current | 0.1 A or more |
C0597 (CASE 5)
| ASIC malfunction | Not detected |
C12F6
| Divide SFRH current monitor value by SFLH current monitor value | Higher than 2.08, or less than 0.48 |
C12F7
| Divide SRRH current monitor value by SRLH current monitor value | Higher than 2.08, or less than 0.48 |
C13BF
| Divide SM1 current monitor value by SM2 current monitor value | Higher than 2.08, or less than 0.48 |