Honda 2004 Odyssey, Service Manual

Page: 1297 / 2459

０１
TCS Main Control
19-96
ABS/TCS Components
System Description (cont’d)
THROTTLE
ANGLE SENSOR
Engine speed signal
Shift position signal
RIGHT-REAR
WHEEL SENSOR
LEFT-REAR
WHEEL SENSOR
RIGHT-FRONT
WHEEL SENSOR
LEFT-FRONT
WHEEL SENSOR
Calculate
traction torque
Calculate
vehicle speed
Calculate drive
wheel speed
difference
Detect
wheel speed
Calculate
slip rate
Calculate control
target value
Calculate control
condition signal
Calculate amount
of right-front
wheel control
Calculate drive
wheel speed
average
Calculate
deviation
Detect
wheel speed
Detect
wheel speed
Detect
wheel speed
Calculate amount
of left-front
wheel control
Drive
solenoid
Drive
solenoid
RIGHT-FRONT
SOLENOID
LEFT-FRONT
SOLENOID
To PCM
Calculate
deviation
ABS/TCS CONTROL UNIT
The ABS/TCS control unit controls the TCS based on signal inputs from the throttle position sensor, engine speed
sensor, shift position sensor, and the wheel sensors. In addition, the ABS/TCS control unit sends an engine retard
request signal to the PCM if necessary. The ABS/TCS control unit uses the modulator unit to control the TCS. The
pressure intensifying control has three modes: pressure intensifying, pressure retaining, and pressure reducing.
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