Scan Tool Data - Suzuki SX4 Service Manual

6C-12 Power Assisted Steering System:

Scan Tool Data

NOTE
When P/S motor is cold condition (that is, armature coil of P/S motor is not heated), normal value with
asterisk (*) mark in the following table is displayed on scan tool
Scan tool data
Power Supply Voltage
Sensor Power Supply
Sensor (Main) Torque
Sensor (Sub) Torque
Control Torque
Target Motor Current
Measured MOT
Current
Vehicle Speed
Engine Speed
Motor Drive Voltage
System Power Status
IGN switch Status
Torque sensor Status
Fail Safe FET Status
Scan Tool Data Definitions
Power Supply Voltage
This parameter indicates battery positive voltage.
Sensor Power Supply (Torque Sensor Power Supply,
V)
This parameter indicates the power supply voltage which
the P/S control module supplies to the torque sensor.
Sensor (Main) Torque (Torque Sensor Main Torque,
N⋅m)
The torque sensor is installed to detect the steering force
and the steering direction. It consists of two
potentiometers and the main torque sensor is one of
these.
Sensor (Sub) Torque (Torque Sensor Sub Torque,
N⋅m)
The torque sensor is installed to detect the steering force
and the steering direction. It consists of two
potentiometers and the sub-torque sensor is one of
these. Its output characteristics are compared with those
of the main torque sensor.
Ignition switch ON
Engine running at idle
speed
Engine running at idle
speed
Engine running at idle
speed
Engine running at idle
speed
Engine running at idle
speed
Engine running and vehicle at stop
Engine running at idle speed after warming up
Engine running at idle
speed
Ignition switch ON
Engine running at idle speed
Vehicle condition
Steering wheel at fully turned to left
Steering wheel at free
Steering wheel at fully turned to right
Steering wheel at fully turned to left
Steering wheel at free
Steering wheel at fully turned to right
Steering wheel at fully turned to left
Steering wheel at free
Steering wheel at fully turned to right
Steering wheel at free
Steering wheel at fully turned to left or
right
Steering wheel at free
Steering wheel at fully turned to left or
right
Steering wheel at free
Steering wheel at fully turned to right
Control Torque (N⋅m)
This parameter is an internal parameter of the P/S
control module. It is obtained by computing the torque
sensor input signal.
Target Motor Current (Motor Control Current, A)
Based on the input signal, the P/S control module
determines the assist amount and controls the current to
the motor suitable for that assist amount. This parameter
indicates that control value.
Measured MOT Current (Motor Monitor Current, A)
This parameter indicates the actually measured value of
the current flowing to the motor. The motor circuit
condition is diagnosed by comparing this parameter with
"Motor Control" parameter described previously.
Vehicle Speed (km/h, MPH)
Vehicle speed signal is fed from BCM. P/S control
module determines the amount of power assist based on
this vehicle speed signal and the torque sensor signal.
Engine Speed (rpm)
Engine speed signal is fed from the ECM so that it can
be used for trouble diagnosis of the electric power
steering system.
S7RW0A6304007
Normal condition
10 – 14 V
7.4 – 10 V
–10.5 – 0 N⋅m
0 N⋅m
0 – 12.85 N⋅m
0 – 10.65 N⋅m
0 N⋅m
–12.85 – 0 N⋅m
–7.22 – 0 N⋅m
0 N⋅m
0 – 7.16 N⋅m
0 A
*45 – 60 A
0 A
*45 – 60 A
0 km/h
700 ± 50 rpm
0.8 – 1 V
*5.5 – 8.5 V
ON
ON
ON
ON