Electronic Stability Program: 4F-20
Scan Tool Data
S5JB0E4604024
The parameter data below are values measured with the scan tool when the normally operating vehicle is under the
following conditions. When taking measurements for comparison by using the scan tool, be sure to check that the
vehicle is under the following conditions.
• Apply parking brake and block wheels.
• Ignition switch ON.
• Turn OFF air conditioning (if equipped).
• Set the wheel in straight-ahead position and hands off steering wheel.
• Turn OFF all electric loads (except ignition).
• Check that there is no DTC.
Scan Tool Data Definition
Battery Volt (V): Battery Voltage is an analog input
signal read by the ESP® control module. Certain
ESP® control module functions will be modified if the
battery voltage falls below or rises above
programmed thresholds.
Pump Motor Driver (V): This parameter indicates the
operational condition of the pump motor driver
(transistor).
RF Wheel Speed, LF Wheel Speed, RR Wheel Speed
and LR Wheel Speed (km/h, MPH): Wheel speed
is ESP® control module internal parameter. It is
computed by reference pulses from the wheel speed
sensor.
Brake Switch (ON, OFF): This switch signal informs
the ESP® control module whether the brake is active
or not.
G Sensor (G): Vehicle acceleration is measured by yaw
rate / G sensor assembly and output to ESP®
control module by pulse signal for 4WD vehicle.
Master Cyl Press (MPa): Brake fluid pressure from
brake master cylinder.
G Sensor (lateral) (G): Lateral acceleration is
measured by yaw rate / G sensor assembly and
output to ESP® control module by pulse signal.
Yaw rate sensor (Deg/s): Yaw rate sensor is measured
by yaw rate / G sensor assembly and output to
ESP® control module by pulse signal.
Steering angle Sen (°): Steering wheel rotation angle
is measured by steering angle sensor and output to
ESP® control module by pulse signal.
Stability control (ACTIVE, INACTIVE): This indicates
stability control in activation / deactivation.
TCS control (brake) (ACTIVE, INACTIVE): This
indicates brake function of TCS in activation /
deactivation.
TCS control (engine) (ACTIVE, INACTIVE): This
indicates torque control of TCS in activation /
deactivation.
ESP® off state (cont) (ESP® ON, ESP® OFF): State
of ESP® OFF switch.
Steering angle Sen (Neutral, NONnewtral): This
indicates steering wheel angle measured by steering
angle sensor is in straight-ahead or not.
Scan Tool Data Standards Condition
Battery Voltage 10.0 – 16.0 V —
Pump Motor Driver 0.0 V —
RF Wheel Speed 0 km/h, 0.0 MPH Vehicle is in stationary condition.
LF Wheel Speed 0 km/h, 0.0 MPH Vehicle is in stationary condition.
RR Wheel Speed 0 km/h, 0.0 MPH Vehicle is in stationary condition.
LR Wheel Speed 0 km/h, 0.0 MPH Vehicle is in stationary condition.
Brake Switch
ON Brake pedal is depressed
OFF Brake pedal is released
G sensor 0 ± 0.1 G Vehicle is on the level
Master Cyl Press 0 ± 0.8 MPa Brake pedal is released
G Sensor (lateral) 0 ± 0.1 G Vehicle is on the level
Yaw rate sensor 0 ± 4 Deg/s Vehicle is on the level
Steering angle Sen 0 ± 3°
Front wheels are in straight-ahead
position
Stability control INACTIVE Stability control system is not working
TCS control (brake) INACTIVE Brake function by TCS is not working
TCS control (engine) INACTIVE Torque control by TCS is not working
ESP® off state (cont)
ESP® ON ESP® OFF switch is OFF condition
ESP® OFF ESP® OFF switch is ON condition
Steering angle Sen Neutral
Front wheels are in straight-ahead
position
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