Steering. Lexus Gs430, Gs300. Uzs190 Grs190
Steering Column. Lexus Gs430, Gs300. Uzs190 Grs190
Electric Steering Lock -- Problem Symptoms Table |
Inspect the suspected areas in numerical order by referring to the corresponding pages when any of the following symptoms occurs.
| Symptom | Suspected area | See page |
| Steering wheel cannot be unlocked (the engine cannot be started). | 1. Check for DTCs in the entry and start system. (for 3GR-FE) | Click here |
| 2. Check for DTCs in the entry and start system. (for 3GR-FSE) | Click here | |
| 3. Check for DTCs in the entry and start system. (for 3UZ-FE) | Click here | |
| 4. Check for DTCs in the engine immobiliser system. | Click here | |
| 5. Check that the "LCK/UNLCK REC" item in the DATA LIST of the certification ECU displays YES within 10 seconds after starting the engine. (If it displays NO, see "No steering unlock command" in this table.) | Click here | |
| 6. Check the output from the IGE terminal of the steering lock ECU. | Click here | |
| 7. Steering lock ECU power source circuit. | Click here | |
| 8. Replace the steering lock ECU. (for 3GR-FE) | Click here | |
| 9. Replace the steering lock ECU. (for 3GR-FSE) | Click here | |
| 10. Replace the steering lock ECU. (for 3UZ-FE) | Click here | |
| Steering wheel cannot be unlocked (no steering unlock command). | 1. Check that the "S CODE MACH" item in the DATA LIST of the certification ECU displays OK. (If it displays NG, replace the certification ECU or ID code box.) | - |
| 2. Check that the "L CODE MACH" item in the DATA LIST of the certification ECU displays OK. (If it displays NG, replace the steering lock ECU, or ID code box.) | - | |
| 3. Replace the certification ECU. | - | |
| Steering wheel cannot be locked. | 1. Check for DTCs in the entry and start system. (for 3GR-FE) | Click here |
| 2. Check for DTCs in the entry and start system. (for 3GR-FSE) | Click here | |
| 3. Check for DTCs in the entry and start system. (for 3UZ-FE) | Click here | |
| 4. Check for DTCs in the engine immobiliser system. | Click here | |
| 5. With the engine switch OFF and the shift in the P position, open and close the drivers door. After that, check that the "LCK/UNLCK REC" item in the DATA LIST of the certification ECU displays YES within 10 seconds. (If it displays NO, see "No steering lock command" in this table.) | Click here | |
| 6. Check the output from the IGE terminal of the steering lock ECU. | Click here | |
| 7. Steering lock ECU power source circuit | Click here | |
| 8. Replace the steering lock ECU. (for 3GR-FE) | Click here | |
| 9. Replace the steering lock ECU. (for 3GR-FSE) | Click here | |
| 10. Replace the steering lock ECU. (for 3UZ-FE) | Click here | |
| Steering wheel cannot be locked (no steering lock command). | 1. Courtesy light switch circuit | - |
| 2. Check that the "S CODE MACH" item in the DATA LIST of the certification ECU displays OK. (If it displays NG, replace the certification ECU or ID code box.) | - | |
| 3. Check that the "L CODE MACH" item in the DATA LIST of the certification ECU displays OK. (If it displays NG, replace the steering lock ECU or ID code box.) | - | |
| 4. Replace the certification ECU. | - |
| Symptom | Suspected area | See page |
| Engine does not start. | 1. Check for DTCs in the entry and start system. (for 3GR-FE) | Click here |
| 2. Check for DTCs in the entry and start system. (for 3GR-FSE) | Click here | |
| 3. Check for DTCs in the entry and start system. (for 3UZ-FE) | Click here | |
| 4. Check for DTCs in the engine immobiliser system. | Click here | |
| 5. Check that the engine switch is turned on. | - | |
| 6. Check cranking operation. (If cranking operation is possible, see "Engine does not start due to the engine immobilizer" in this table.) | - | |
| 7. Check "SHIFT P SIG" in the DATA LIST of the power source control ECU and confirm that the shift signal is normal. | - | |
| 8. Check wether the steering wheel is locked or unlocked. (If it is locked, see "Steering wheel cannot be unlocked" in the steering lock function table.) | - | |
| 9. Check the output from the SLP terminal of the steering lock ECU. | Click here | |
| 10. Check the output signal from the ST SW of the certification ECU (DTC B2275). (for 3GR-FE) | Click here | |
| 11. Check the output signal from the ST SW of the certification ECU (DTC B2275). (for 3GR-FSE) | Click here | |
| 12. Check the output signal from the ST SW of the certification ECU (DTC B2275). (for 3UZ-FE) | Click here | |
| 13. Replace the power source control ECU. | - | |
| Engine does not start due to the engine immobilizer. | 1. Check that the "L CODE MACH" item in the DATA LIST of the certification ECU displays OK. (If it displays NG, replace the steering lock ECU or ID code box.) | - |
| 2. Check that the "ENG START REQ" item in the DATA LIST of the certification ECU displays YES. (If it displays NO, replace the certification ECU.) | - | |
| 3. Check that the "S CODE MACH" item in the DATA LIST of the certification ECU displays OK. (If it displays NG, replace the certification ECU or ID code box.) | - | |
| 4. Replace the ID code box. | - |