Service Data Reference Table

The following items of ECU input data can be read using scan tool:

1. When the system is normal.

   Item No.	Check item	Inspection conditions		Normal conditions
   01	Torque sensor main	Start the electric motor unit. Turn the steering wheel with a vehicle stationary.	Centre position	Approximately 2.5 V
   			Steering wheel turned to right	Approximately 0.3 to 2.6 V
   			Steering wheel turned to left	Approximately 2.4 to 4.7 V
   02	Torque sensor sub	Start the electric motor unit. Turn the steering wheel with a vehicle stationary.	Centre position	Approximately 2.5 V
   			Steering wheel turned to right	Approximately 2.4 to 4.7 V
   			Steering wheel turned to left	Approximately 0.3 to 2.6 V
   03	Torque sensor power supply voltage	Start the electric motor unit.		Approximately 5 V
   04	Motor current	Start the electric motor unit. Turn the steering wheel to the left and right with a vehicle stationary.		Approximately 30 A or less
   05	Motor current (target value)	Start the electric motor unit. Turn the steering wheel to the left and right with a vehicle stationary.		Approximately 30 A or less
   06	Relay voltage	Start the electric motor unit. Turn the steering wheel to the left and right with a vehicle stationary.		B+ (approximately 12 V) or less
   07	Engine speed	Start the electric motor unit. Turn the steering wheel to the left and right with a vehicle stationary.		0 r/min
   08	Vehicle speed	Perform a test run of the vehicle.		Speedometer displayed value and scan tool displayed value agree with each other.
   09	Fail-safe relay	When Ready indicator is off (electric motor switch: ON)		OFF
   		Start the electric motor unit.		ON
   11	Electric motor switch	Electric motor switch: ON → OFF		OFF
   		Electric motor switch: ON		ON
   13	Motor current (limit value)	Start the electric motor unit. Turn the steering wheel to the left and right with a vehicle stationary.		Approximately 30 A or less
   14	Motor voltage (+)	Start the electric motor unit. Turn the steering wheel to the left and right with a vehicle stationary.		B+ (approximately 12 V) or less
   15	Motor voltage (-)	Start the electric motor unit. Turn the steering wheel to the left and right with a vehicle stationary.		B+ (approximately 12 V) or less

   NOTE: Although the item No. 13 (motor current) appears on scan tool, it will not be used. Therefore, descriptions for above table is omitted.
2. System shutdown by ECU

   While EPS-ECU is disabled by the diagnostic function, the displayed data on scan tool differs from the actual data.