Typical Enabling Conditions
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)
| Monitor runs whenever the following DTCs are not stored | C12A7: ABS hold solenoid (FL) circuit low C12A8: ABS hold solenoid (FL) circuit high C12B2: ABS release solenoid (FL) circuit low C12B3: ABS release solenoid (FL) circuit high C12BD: ABS hold solenoid (FR) circuit low C12BE: ABS hold solenoid (FR) circuit high C12C8: ABS release solenoid (FR) circuit low C12C9: ABS release solenoid (FR) circuit high C12D3: ABS hold solenoid (RL) circuit low C12D4: ABS hold solenoid (RL) circuit high C12DE: ABS release solenoid (RL) circuit low C12DF: ABS release solenoid (RL) circuit high C12E9: ABS hold solenoid (RR) circuit low C12EA: ABS hold solenoid (RR) circuit high C12F4: ABS release solenoid (RR) circuit low C12F5: ABS release solenoid (RR) circuit high C12F6: ABS hold solenoid other functional C12F7: ABS hold solenoid other functional C137C: Brake system voltage input out of range low C137D: Brake system voltage input out of range high C13BF: SM solenoid other functional C13C2: SM1 solenoid circuit low C13C3: SM1 solenoid circuit high C13CB: SM2 solenoid circuit low C13CC: SM2 solenoid circuit high C143B: Brake system voltage solenoid relay stuck C143C: Brake system voltage open circuit |
| All of the following conditions are met | - |
| Command to solenoid relay | On |
| Power supply for solenoid | Higher than 6 V |
| +BS voltage | 9.5 V or more and 17.4 V or less |
C0597 (CASE 2)
| Monitor runs whenever the following DTCs are not stored | C12A7: ABS hold solenoid (FL) circuit low C12A8: ABS hold solenoid (FL) circuit high C12B2: ABS release solenoid (FL) circuit low C12B3: ABS release solenoid (FL) circuit high C12BD: ABS hold solenoid (FR) circuit low C12BE: ABS hold solenoid (FR) circuit high C12C8: ABS release solenoid (FR) circuit low C12C9: ABS release solenoid (FR) circuit high C12D3: ABS hold solenoid (RL) circuit low C12D4: ABS hold solenoid (RL) circuit high C12DE: ABS release solenoid (RL) circuit low C12DF: ABS release solenoid (RL) circuit high C12E9: ABS hold solenoid (RR) circuit low C12EA: ABS hold solenoid (RR) circuit high C12F4: ABS release solenoid (RR) circuit low C12F5: ABS release solenoid (RR) circuit high C12F6: ABS hold solenoid other functional C12F7: ABS hold solenoid other functional C137C: Brake system voltage input out of range low C137D: Brake system voltage input out of range high C13BF: SM solenoid other functional C13C2: SM1 solenoid circuit low C13C3: SM1 solenoid circuit high C13CB: SM2 solenoid circuit low C13CC: SM2 solenoid circuit high C143B: Brake system voltage solenoid relay stuck C143C: Brake system voltage open circuit |
| All of the following conditions are met | - |
| +BS voltage | 9.5 V or more |
| Solenoid relay | Off |
| ASIC output permission | Off |
C0597 (CASE 3)
| Monitor runs whenever the following DTCs are not stored | C12A7: ABS hold solenoid (FL) circuit low C12A8: ABS hold solenoid (FL) circuit high C12B2: ABS release solenoid (FL) circuit low C12B3: ABS release solenoid (FL) circuit high C12BD: ABS hold solenoid (FR) circuit low C12BE: ABS hold solenoid (FR) circuit high C12C8: ABS release solenoid (FR) circuit low C12C9: ABS release solenoid (FR) circuit high C12D3: ABS hold solenoid (RL) circuit low C12D4: ABS hold solenoid (RL) circuit high C12DE: ABS release solenoid (RL) circuit low C12DF: ABS release solenoid (RL) circuit high C12E9: ABS hold solenoid (RR) circuit low C12EA: ABS hold solenoid (RR) circuit high C12F4: ABS release solenoid (RR) circuit low C12F5: ABS release solenoid (RR) circuit high C12F6: ABS hold solenoid other functional C12F7: ABS hold solenoid other functional C137C: Brake system voltage input out of range low C137D: Brake system voltage input out of range high C13BF: SM solenoid other functional C13C2: SM1 solenoid circuit low C13C3: SM1 solenoid circuit high C13CB: SM2 solenoid circuit low C13CC: SM2 solenoid circuit high C143B: Brake system voltage solenoid relay stuck C143C: Brake system voltage open circuit |
| All of the following conditions are met | - |
| +BS voltage | 9.5 V or more |
| Solenoid relay | On |
| ASIC output permission | Off |
| Solenoid current output order value | 160 mA |
| Power supply voltage for solenoid | 6 V or more |
C0597 (CASE 4)
| Monitor runs whenever the following DTCs are not stored | C12A7: ABS hold solenoid (FL) circuit low C12A8: ABS hold solenoid (FL) circuit high C12B2: ABS release solenoid (FL) circuit low C12B3: ABS release solenoid (FL) circuit high C12BD: ABS hold solenoid (FR) circuit low C12BE: ABS hold solenoid (FR) circuit high C12C8: ABS release solenoid (FR) circuit low C12C9: ABS release solenoid (FR) circuit high C12D3: ABS hold solenoid (RL) circuit low C12D4: ABS hold solenoid (RL) circuit high C12DE: ABS release solenoid (RL) circuit low C12DF: ABS release solenoid (RL) circuit high C12E9: ABS hold solenoid (RR) circuit low C12EA: ABS hold solenoid (RR) circuit high C12F4: ABS release solenoid (RR) circuit low C12F5: ABS release solenoid (RR) circuit high C12F6: ABS hold solenoid other functional C12F7: ABS hold solenoid other functional C137C: Brake system voltage input out of range low C137D: Brake system voltage input out of range high C13BF: SM solenoid other functional C13C2: SM1 solenoid circuit low C13C3: SM1 solenoid circuit high C13CB: SM2 solenoid circuit low C13CC: SM2 solenoid circuit high C143B: Brake system voltage solenoid relay stuck C143C: Brake system voltage open circuit |
| All of the following conditions are met | - |
| +BS voltage | 9.5 V or more |
| Solenoid relay | On |
| ASIC output permission | Off |
| NO solenoid current output order value | 160 mA |
| NC solenoid output order value | On |
| Power supply voltage for solenoid | 6 V or more |
C0597 (CASE 5)
| Monitor runs whenever the following DTCs are not stored | C12A7: ABS hold solenoid (FL) circuit low C12A8: ABS hold solenoid (FL) circuit high C12B2: ABS release solenoid (FL) circuit low C12B3: ABS release solenoid (FL) circuit high C12BD: ABS hold solenoid (FR) circuit low C12BE: ABS hold solenoid (FR) circuit high C12C8: ABS release solenoid (FR) circuit low C12C9: ABS release solenoid (FR) circuit high C12D3: ABS hold solenoid (RL) circuit low C12D4: ABS hold solenoid (RL) circuit high C12DE: ABS release solenoid (RL) circuit low C12DF: ABS release solenoid (RL) circuit high C12E9: ABS hold solenoid (RR) circuit low C12EA: ABS hold solenoid (RR) circuit high C12F4: ABS release solenoid (RR) circuit low C12F5: ABS release solenoid (RR) circuit high C12F6: ABS hold solenoid other functional C12F7: ABS hold solenoid other functional C137C: Brake system voltage input out of range low C137D: Brake system voltage input out of range high C13BF: SM solenoid other functional C13C2: SM1 solenoid circuit low C13C3: SM1 solenoid circuit high C13CB: SM2 solenoid circuit low C13CC: SM2 solenoid circuit high C143B: Brake system voltage solenoid relay stuck C143C: Brake system voltage open circuit |
| All of the following conditions are met | - |
| Solenoid relay | Off |
| ASIC output permission | Off |
| ASIC send data | NG answer |
C12F6
| Monitor runs whenever the following DTCs are not stored | C0597 (Case 1): ABS hold solenoid circuit stuck C0597 (Case 2 to 5): ABS hold solenoid performance C12A7: ABS hold solenoid (FL) circuit low C12A8: ABS hold solenoid (FL) circuit high C12B2: ABS release solenoid (FL) circuit low C12B3: ABS release solenoid (FL) circuit high C12BD: ABS hold solenoid (FR) circuit low C12BE: ABS hold solenoid (FR) circuit high C12C8: ABS release solenoid (FR) circuit low C12C9: ABS release solenoid (FR) circuit high C12D3: ABS hold solenoid (RL) circuit low C12D4: ABS hold solenoid (RL) circuit high C12DE: ABS release solenoid (RL) circuit low C12DF: ABS release solenoid (RL) circuit high C12E9: ABS hold solenoid (RR) circuit low C12EA: ABS hold solenoid (RR) circuit high C12F4: ABS release solenoid (RR) circuit low C12F5: ABS release solenoid (RR) circuit high C12F7: ABS hold solenoid other functional C137C: Brake system voltage input out of range low C137D: Brake system voltage input out of range high C13BF: SM solenoid other functional C13C2: SM1 solenoid circuit low C13C3: SM1 solenoid circuit high C13CB: SM2 solenoid circuit low C13CC: SM2 solenoid circuit high C143B: Brake system voltage solenoid relay stuck C143C: Brake system voltage open circuit |
| All of the following conditions are met | A, B, C, D, E, F, G and H |
| A. Command to solenoid relay | On |
| B. Power supply for solenoid | 9.5 V or more |
| C. +BS voltage | 17.4 V or less |
| D. Following condition is met | 0.120 seconds or more |
| Difference SFRH target current value (0.018 seconds before) and SFRH target current value | Less than 0.022 A |
| E. Following condition is met | 0.120 seconds or more |
| Difference SFLH target current value (0.018 seconds before) and SFLH target current value | Less than 0.022 A |
| F. SFRH target current value | SFLH target current value |
| G. SFRH target current value | 0.25 A or more, and 1 A or less |
| H. SFLH target current value | 0.25 A or more, and 1 A or less |
C12F7
| Monitor runs whenever the following DTCs are not stored | C0597 (Case 1): ABS hold solenoid circuit stuck C0597 (Case 2 to 5): ABS hold solenoid performance C12A7: ABS hold solenoid (FL) circuit low C12A8: ABS hold solenoid (FL) circuit high C12B2: ABS release solenoid (FL) circuit low C12B3: ABS release solenoid (FL) circuit high C12BD: ABS hold solenoid (FR) circuit low C12BE: ABS hold solenoid (FR) circuit high C12C8: ABS release solenoid (FR) circuit low C12C9: ABS release solenoid (FR) circuit high C12D3: ABS hold solenoid (RL) circuit low C12D4: ABS hold solenoid (RL) circuit high C12DE: ABS release solenoid (RL) circuit low C12DF: ABS release solenoid (RL) circuit high C12E9: ABS hold solenoid (RR) circuit low C12EA: ABS hold solenoid (RR) circuit high C12F4: ABS release solenoid (RR) circuit low C12F5: ABS release solenoid (RR) circuit high C12F6: ABS hold solenoid other functional C137C: Brake system voltage input out of range low C137D: Brake system voltage input out of range high C13BF: SM solenoid other functional C13C2: SM1 solenoid circuit low C13C3: SM1 solenoid circuit high C13CB: SM2 solenoid circuit low C13CC: SM2 solenoid circuit high C143B: Brake system voltage solenoid relay stuck C143C: Brake system voltage open circuit |
| All of the following conditions are met | A, B, C, D, E, F, G and H |
| A. Command to solenoid relay | On |
| B. Power supply for solenoid | 9.5 V or more |
| C. +BS voltage | 17.4 V or less |
| D. Following condition is met | 0.120 seconds or more |
| Difference SRRH target current value (0.018 seconds before) and SRRH target current value | Less than 0.022 A |
| E. Following condition is met | 0.120 seconds or more |
| Difference SRLH target current value (0.018 seconds before) and SRLH target current value | Less than 0.022 A |
| F. SRRH target current value | SRLH target current value |
| G. SRRH target current value | 0.25 A or more, and 1 A or less |
| H. SRLH target current value | 0.25 A or more, and 1 A or less |
C13BF
| Monitor runs whenever the following DTCs are not stored | C0597 (Case 1): ABS hold solenoid circuit stuck C0597 (Case 2 to 5): ABS hold solenoid performance C12A7: ABS hold solenoid (FL) circuit low C12A8: ABS hold solenoid (FL) circuit high C12B2: ABS release solenoid (FL) circuit low C12B3: ABS release solenoid (FL) circuit high C12BD: ABS hold solenoid (FR) circuit low C12BE: ABS hold solenoid (FR) circuit high C12C8: ABS release solenoid (FR) circuit low C12C9: ABS release solenoid (FR) circuit high C12D3: ABS hold solenoid (RL) circuit low C12D4: ABS hold solenoid (RL) circuit high C12DE: ABS release solenoid (RL) circuit low C12DF: ABS release solenoid (RL) circuit high C12E9: ABS hold solenoid (RR) circuit low C12EA: ABS hold solenoid (RR) circuit high C12F4: ABS release solenoid (RR) circuit low C12F5: ABS release solenoid (RR) circuit high C12F6: ABS hold solenoid other functional C12F7: ABS hold solenoid other functional C137C: Brake system voltage input out of range low C137D: Brake system voltage input out of range high C13C2: SM1 solenoid circuit low C13C3: SM1 solenoid circuit high C13CB: SM2 solenoid circuit low C13CC: SM2 solenoid circuit high C143B: Brake system voltage solenoid relay stuck C143C: Brake system voltage open circuit |
| All of the following conditions are met | A, B, C, D, E, F, G and H |
| A. Command to solenoid relay | On |
| B. Power supply for solenoid | 9.5 V or more |
| C. +BS voltage | 17.4 V or less |
| D. Following condition is met | 0.240 seconds or more |
| Difference SM1 target current value (0.018 seconds before) and SM1 target current value | Less than 0.022 A |
| E. Following condition is met | 0.240 seconds or more |
| Difference SM2 target current value (0.018 seconds before) and SM2 target current value | Less than 0.022 A |
| F. SM1 target current value | SM2 target current value |
| G. SM1 target current value | 0.348 A or more, and 0.568 A or less |
| H. SM2 target current value | 0.348 A or more, and 0.568 A or less |