| DTC 51-01: | Torque Sensor Upper/Low Limit (VT1/VT2 Voltage) (Regular diagnosis) |
| 1. | Turn the ignition switch OFF. |
| 2. | Connect the HDS to the data link connector (DLC). |
| 3. | Turn the ignition switch ON (II). |
| 4. | Check the ADVT1-W in the DATA LIST with the HDS. Is the voltage at 0.90-3.55 V? YES - Go to 5. NO - Go to 6. |
| 5. | Check the ADVT2-W in the DATA LIST with the HDS. Is the voltage at 1.02-3.73 V? YES - Check for loose wires or poor connections. If the connections are good, the system is OK at this time.n NO - Go to 6. |
| 6. | Turn the ignition switch OFF. |
| 7. | Disconnect the EPS control unit connector D (28P). |
| 8. | Check for resistance between EPS control unit connector D (28P) terminals No. 9 and No. 10.
Is the resistance between 12-15 W? YES - Go to 9. NO - Go to 13. |
| 9. | Check for resistance between EPS control unit connector D (28P) terminals No. 8 and No. 9.
Is the resistance between 12-15 W? YES - Go to 10. NO - Go to 15. |
| 10. | Check for continuity between EPS control unit connector D (28P) terminals No. 9 and body ground.
Is there continuity? YES - Go to 11. NO - Check for loose terminals in the EPS control unit connectors, and repair if necessary. If no poor connections are found, replace the EPS control unit.n |
| 11. | Disconnect the torque sensor 3P connector from the steering gearbox. |
| 12. | Check for continuity between torque sensor 3P connector terminals No. 2 and body ground.
Is there continuity? YES - Repair short to ground in the wire between the torque sensor and EPS control unit.n NO - Faulty torque sensor (short in the sensor internal circuit), replace the steering gearbox.n |
| 13. | Disconnect the torque sensor 3P connector from the steering gearbox. |
| 14. | On the sensor side, check for resistance between torque sensor terminals No. 1 and No. 2.
Is the resistance between 12-15 W? YES - Repair open or short between the PNK and BLU/RED wires in the torque sensor circuit between torque sensor and EPS control unit.n NO - Faulty torque sensor (short or open in the internal circuit), replace the steering gearbox.n |
| 15. | Disconnect the torque sensor 3P connector from the steering gearbox. |
| 16. | On the sensor side, check for resistance between torque sensor terminals No. 2 and No. 3.
Is the resistance between 12-15 W? YES - Repair open or short between the WHT/GRN and BLU/RED wires in the torque sensor circuit between torque sensor and EPS control unit.n NO - Faulty torque sensor (short or open in the internal circuit), replace the steering gearbox.n |