DATA LIST REFERENCE TABLE


The following items can be read by the M.U.T.-III from the EPS-ECU input data.

When the system is normal.


Item No.
 Check item
 Check condition
 Normal condition
01
 Torque sensor (main)
  • Start the engine.
  • Turn the steering wheel with a vehicle stationary.

 Centre position
 Approximately 2.5 V
Steering wheel turned to right
 2.5 - 4.7 V
Steering wheel turned to left
 0.3 - 2.5 V
02
 Torque sensor (sub)
  • Start the engine.
  • Turn the steering wheel with a vehicle stationary.

 Centre position
 Approximately 2.5 V
Steering wheel turned to right
 2.5 - 0.3 V
Steering wheel turned to left
 4.7 - 2.5 V
03
 Torque sensor (power supply)
 Start the engine.
 4.7 - 5.3 V
04
 Motor current
  • Start the engine.
  • Turn the steering wheel to the left and right with a vehicle stationary.

 Approximately 82 Arms or less
(When the steering wheel is not operated, approximately battery voltage)
05
 Motor current (target)
  • Start the engine.
  • Turn the steering wheel to the left and right with a vehicle stationary.

 Approximately 82 Arms or less
(When the steering wheel is not operated, approximately battery voltage)
06
 Motor current (unlimited target)
  • Start the engine.
  • Turn the steering wheel to the left and right with a vehicle stationary.

 Approximately 82 Arms or less
07
 Engine speed
  • Start the engine.
  • Turn the steering wheel to the left and right with a vehicle stationary.

 Tachometer displayed value and M.U.T.-III displayed value agree with each other.
08
 Vehicle speed
  • Start the engine.
  • Turn the steering wheel to the left and right with a vehicle stationary.

 Speed meter displayed value and M.U.T.-III displayed value agree with each other.
09
 Add torque indication status
  • Start the engine.
  • Vehicle stationary.
  • EPS warning lamp turn off.

 Approximately 0 Nm
11
 Ignition switch
 Ignition switch: LOCK (OFF)
 OFF
Ignition switch: ON
 ON
17
 Motor electric angle
  • Start the engine.
  • Turn the steering wheel to the left and right with a vehicle stationary.

 0 - 360 deg
Motor angle
18
 Motor speed
  • Start the engine.
  • Turn the steering wheel to the left and right with a vehicle stationary.

 Rated value: 1130 rpm (neutral: 0 rpm)
19
 Motor voltage
 Start the engine.
 2.1 - 11.7 V
22
 Power relay voltage
 Ignition switch: ON
 Initialisation
Start the engine.
 Battery voltage
23
 Ignition voltage
 Ignition switch: ON
 Battery voltage
24
 Power relay
 Ignition switch: ON
 OFF
Start the engine.
 ON
25
 Motor relay
 Ignition switch: ON
 OFF
Start the engine.
 ON
A11*
 Odometer :rec.A1
 Assist limitation does not occur.
 Initialisation
Assist limitation occurs.
 Odometer value
A12*
 Motor current (target) :rec.A1
 Assist limitation does not occur.
 Initialisation
Assist limitation occurs.
 Current value: 82 Arms or less
A13*
 Motor cur. (unltd target) :rec.A1
 Assist limitation does not occur.
 Initialisation
Assist limitation occurs.
 Current value (before the assist limitation)
A14*
 Motor current :rec.A1
 Assist limitation does not occur.
 Initialisation
Assist limitation occurs.
 Actual current value
A15*
 Vehicle speed :rec.A1
 Assist limitation does not occur.
 Initialisation
Assist limitation occurs.
 CAN vehicle speed
A21*
 Odometer :rec.A2
 Assist limitation does not occur.
 Initialisation
Assist limitation occurs.
 Odometer value
A22*
 Motor current (target) :rec.A2
 Assist limitation does not occur.
 Initialisation
Assist limitation occurs.
 Current value: 82 Arms or less
A23*
 Motor cur. (unltd target) :rec.A2
 Assist limitation does not occur.
 Initialisation
Assist limitation occurs.
 Current value (before the assist limitation)
A24*
 Motor current :rec.A2
 Assist limitation does not occur.
 Initialisation
Assist limitation occurs.
 Actual current value
A25*
 Vehicle speed :rec.A2
 Assist limitation does not occur.
 Initialisation
Assist limitation occurs.
 CAN vehicle speed
A31*
 Odometer :rec.A3
 Assist limitation does not occur.
 Initialisation
Assist limitation occurs.
 Odometer value
A32*
 Motor current (target) :rec.A3
 Assist limitation does not occur.
 Initialisation
Assist limitation occurs.
 Current value: 82 Arms or less
A33*
 Motor cur. (unltd target) :rec.A3
 Assist limitation does not occur.
 Initialisation
Assist limitation occurs.
 Current value (before the assist limitation)
A34*
 Motor current :rec.A3
 Assist limitation does not occur.
 Initialisation
Assist limitation occurs.
 Actual current value
A35*
 Vehicle speed :rec.A3
 Assist limitation does not occur.
 Initialisation
Assist limitation occurs.
 CAN vehicle speed
A41*
 Odometer :rec.A4
 Assist limitation does not occur.
 Initialisation
Assist limitation occurs.
 Odometer value
A42*
 Motor current (target) :rec.A4
 Assist limitation does not occur.
 Initialisation
Assist limitation occurs.
 Current value: 82 Arms or less
A43*
 Motor cur. (unltd target) :rec.A4
 Assist limitation does not occur.
 Initialisation
Assist limitation occurs.
 Current value (before the assist limitation)
A44*
 Motor current :rec.A4
 Assist limitation does not occur.
 Initialisation
Assist limitation occurs.
 Actual current value
A45*
 Vehicle speed :rec.A4
 Assist limitation does not occur.
 Initialisation
Assist limitation occurs.
 CAN vehicle speed
A51*
 Odometer :rec.A5
 Assist limitation does not occur.
 Initialisation
Assist limitation occurs.
 Odometer value
A52*
 Motor current (target) :rec.A5
 Assist limitation does not occur.
 Initialisation
Assist limitation occurs.
 Current value: 82 Arms or less
A53*
 Motor cur. (unltd target) :rec.A5
 Assist limitation does not occur.
 Initialisation
Assist limitation occurs.
 Current value (before the assist limitation)
A54*
 Motor current :rec.A5
 Assist limitation does not occur.
 Initialisation
Assist limitation occurs.
 Actual current value
A55*
 Vehicle speed :rec.A5
 Assist limitation does not occur.
 Initialisation
Assist limitation occurs.
 CAN vehicle speed
B11*
 Odometer :rec.V1
 Battery voltage down does not occur.
 Initialisation
Battery voltage down occurs.
 Odometer value when battery voltage down occurs.
B12*
 Power relay voltage :rec V1
 Battery voltage down does not occur.
 Initialisation
Battery voltage down occurs.
 Relay contact voltage
B13*
 Vehicle speed :rec.V1
 Battery voltage down does not occur.
 Initialisation
Battery voltage down occurs.
 Vehicle speed when battery voltage down occurs.
B21*
 Odometer :rec.V2
 Battery voltage down does not occur.
 Initialisation
Battery voltage down occurs.
 Odometer value when battery voltage down occurs.
B22*
 Power relay voltage :rec V2
 Battery voltage down does not occur.
 Initialisation
Battery voltage down occurs.
 Relay contact voltage
B23*
 Vehicle speed :rec.V2
 Battery voltage down does not occur.
 Initialisation
Battery voltage down occurs.
 Vehicle speed when battery voltage down occurs.
B31*
 Odometer :rec.V3
 Battery voltage down does not occur.
 Initialisation
Battery voltage down occurs.
 Odometer value when battery voltage down occurs.
B32*
 Power relay voltage :rec V3
 Battery voltage down does not occur.
 Initialisation
Battery voltage down occurs.
 Relay contact voltage
B33*
 Vehicle speed :rec.V3
 Battery voltage down does not occur.
 Initialisation
Battery voltage down occurs.
 Vehicle speed when battery voltage down occurs.
B41*
 Odometer :rec.V4
 Battery voltage down does not occur.
 Initialisation
Battery voltage down occurs.
 Odometer value when battery voltage down occurs.
B42*
 Power relay voltage :rec V4
 Battery voltage down does not occur.
 Initialisation
Battery voltage down occurs.
 Relay contact voltage
B43*
 Vehicle speed :rec.V4
 Battery voltage down does not occur.
 Initialisation
Battery voltage down occurs.
 Vehicle speed when battery voltage down occurs.
B51*
 Odometer :rec.V5
 Battery voltage down does not occur.
 Initialisation
Battery voltage down occurs.
 Odometer value when battery voltage down occurs.
B52*
 Power relay voltage :rec V5
 Battery voltage down does not occur.
 Initialisation
Battery voltage down occurs.
 Relay contact voltage
B53*
 Vehicle speed :rec.V5
 Battery voltage down does not occur.
 Initialisation
Battery voltage down occurs.
 Vehicle speed when battery voltage down occurs.
note *: The service data which begins with A or B must be used when the steering has become heavy without setting any diagnosis code. If assist functions are not intervened or the battery voltage is not dropped, the M.U.T.-III displays an abnormal value. But there is no fault.

When the EPS-ECU shut off electric power steering system operation.


When the diagnosis system stops the EPS-ECU, the M.U.T.-III display data will be unreliable.