Suzuki 2006 SX4, Service Manual

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6C-12 Power Assisted Steering System:
Scan Tool Data
S6RW0C6304007
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 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.
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.
Scan tool data Vehicle condition Normal condition
) Power Supply Voltage
Ignition switch ON
10 – 14 V
) Sensor Power Supply 7.4 – 10 V
) Sensor (Main) Torque
Engine running at idle
speed
Steering wheel at fully turned to left –10.5 – 0 N
⋅
m
Steering wheel at free 0 N
⋅
m
Steering wheel at fully turned to right 0 – 12.85 N
⋅
m
) Sensor (Sub) Torque
Engine running at idle
speed Steering wheel at fully turned to left 0 – 10.65 N
⋅
m
Steering wheel at free 0 N
⋅
m
Steering wheel at fully turned to right –12.85 – 0 N
⋅
m
) Control Torque
Engine running at idle
speed
Steering wheel at fully turned to left –7.22 – 0 N
⋅
m
Steering wheel at free 0 N
⋅
m
Steering wheel at fully turned to right 0 – 7.16 N
⋅
m
) Target Motor Current
Engine running at idle
speed
Steering wheel at free 0 A
Steering wheel at fully turned to left or
right
*45 – 60 A
) Measured MOT
Current
Engine running at idle
speed
Steering wheel at free 0 A
Steering wheel at fully turned to left or
right
*45 – 60 A
) Vehicle Speed Engine running and vehicle at stop 0 km/h
) Engine Speed Engine running at idle speed after warming up 700
±
50 rpm
) Motor Drive Voltage
Engine running at idle
speed Steering wheel at free 0.8 – 1 V
Steering wheel at fully turned to right *5.5 – 8.5 V
) System Power Status
Ignition switch ON
ON
) IGN switch Status ON
) Torque sensor Status
Engine running at idle speed
ON
) Fail Safe FET Status ON