DTC 12: Torque Sensor T/SIG
- Clear the DTC.
- Start the engine.
- Wait at least 10 seconds.
Does the EPS indicator come on?
YES: Go to step 4.
NO: Check for loose wires or poor connections. If the connections are good, the system is OK at this time.
- Stop the engine, and verify the DTC.
Is DTC 12 indicated?
YES: Go to step 5.
NO: Perform the appropriate troubleshooting for the code indicated.
- Make sure the ignition switch is OFF, then disconnect EPS control unit connector C (20P) and the torque sensor 6P connector.
- Check for continuity between EPS control unit connector C (20P) terminal No. 15 and body ground.Fig 1: Checking For Continuity Between EPS Control Unit Connector C (20P) Terminal No. 15 And Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Is there continuity?
YES: Repair short to body ground in the wire between the torque sensor and EPS control unit.
NO: Go to step 7.
- Turn the ignition switch ON (II).
- Measure the voltage between EPS control unit connector C (20P) terminal No. 15 and body ground.Fig 2: Measuring The Voltage Between EPS Control Unit Connector C (20P) Terminal No. 15 And Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Is there battery voltage?
YES: Repair short to power in the + circuit wire between the torque sensor and EPS control unit.
NO: Go to step 9.
- Turn the ignition switch OFF.
- Check for continuity between EPS control unit connector C (20P) terminal No. 15 and the torque sensor 6P connector terminal No. 4.Fig 3: Checking For Continuity Between EPS Control Unit Connector C (20P) Terminal No. 15 And The Torque Sensor 6P Connector Terminal No. 4
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Is there continuity?
YES: Go to step 11.
NO: Repair open in the wire between the torque sensor and the EPS control unit.
- Substitute a known-good EPS control unit, and reconnect the disconnected connectors.
- Start the engine.
Does the EPS indicator come on?
YES: Go to step 13.
NO: Check for loose EPS control unit connectors. If necessary, replace the EPS control unit and retest.
- Stop the engine, and verify the DTC.
Is DTC 12 indicated?
YES: Check for loose torque sensor connectors. If necessary, substitute a known-good steering gearbox and recheck.
NO: Perform the appropriate troubleshooting for the code indicated.