Honda 2004 Odyssey Service Manual page 1296

ABS Main Control
The ABS/TCS control unit detects the wheel speed based on the wheel sensor signal it received, then it calculates the
vehicle speed based on the detected wheel speed. The control unit detects the vehicle speed during deceleration
based on the rate of deceleration.
The ABS/TCS control unit calculates the slip rate of each wheel, and it transmits the control signal to the modulator
unit solenoid valve when the slip rate is high.
The pressure reduction control has three modes: pressure intensifying, pressure retaining, and pressure reducing.
Detect
RIGHT-REAR
WHEEL SENSOR Wheel Speed
LEFT-REAR Detect
WHEEL SENSOR Wheel Speed
RIGHT-FRONT
Detect
WHEEL SENSOR
Wheel Speed
LEFT-FRONT
Detect
WHEEL SENSOR Wheel Speed
Detect Reference
Vehicle Speed Slip Rate
REAR
Detect
Slip Rate
Select Low
Speed Wheel
RIGHT-FRONT
Detect
Slip Rate
LEFT-FRONT
Detect
Slip Rate
ABS/TCS CONTROL UNIT
RIGHT-REAR
ABS Drive
SOLENOID
Control Solenoid
LEFT-REAR
Drive
SOLENOID
Solenoid
Drive RIGHT-FRONT
ABS
Solenoid SOLENOID
Control
LEFT-FRONT
ABS Drive
Control Solenoid SOLENOID
(cont'd)
19-95