Honda Odyssey 2004. Manual - part 321

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＊０２

ABS/TCS Control Unit Inputs and Outputs for Connector A (26P) (cont’d)

Terminal

number

Terminal

Wire color

Terminal sign

(Terminal name)

Description

Measurement

Conditions

(Ignition switch ON (II))

Voltage

19-90

ABS/TCS Components

System Description (cont’d)

ABS/TCS CONTROL UNIT CONNECTOR A (26P)

15

GRY

NCR

(Normally closed right)

Drives right TCS normally
closed solenoid valve

15

GND

TCS indicator

OFF

Battery
Voltage

16

LT/BLU

NOR

(Normally opened

right)

Drives right TCS normally
open solenoid valve

16

GND

ON

(Disconnect

16P connector

to turn

indicator on)

Below 0.3 V

18

RED/WHT

TCS1

Drives TCS indicator
(Turns the indicator drive
transistor to ON, then
turns off the indicator)

18

GND

TCS indicator

OFF

Battery
Voltage

ON

About 2 V

20

GRN

MCK

(Motor check)

Detects pump motor
drive signal

20

GND

Pump motor

ON

Battery
Voltage

OFF

Below 0.3 V

Remove MCK fuse

About 10 V

21

LT BLU

RLW (

)

(Rear-left wheel

positive)

Detects left-rear wheel
sensor signal

21

22

Wheel

Turn wheel at
1 turn/second

AC:
0. 053 V or
above
(Reference)

0.15 Vp-p or
above

22

GRY

RLW (

)

(Rear-left wheel

positive)

23

GRN/YEL

RRW (

)

(Rear-right wheel

positive)

Detects right-rear wheel
sensor signal

23

24

24

BLU/YEL

RRW (

)

(Rear-right wheel

negative)

Stopped

0.25 V
1.15 V

25

YEL/GRN

FSR

(Fail-safe relay)

Drives ABS fail-safe relay
(ABS fail-safe relay is
turned OFF to shut off the
power source to the
solenoid and pump
motor relay when a
problem occurs.)

25

GND

ABS
(SCS circuit
must be open)

Warning

Below 0.3 V

Normal

About 11 V

26

LT BLU

DLC

(Data link connector)

Communicates with the
HDS

Oscilloscope:

Wire side of female terminals

03/07/29 09:56:06 61S0X050_190_0090

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０２

ABS/TCS Control Unit Inputs and Outputs for Connector B (16P)

Terminal

number

Terminal

Wire color

Terminal sign

(Terminal name)

Description

Measurement

Conditions

(Ignition switch ON (II))

Voltage

19-91

ABS/TCS CONTROL UNIT CONNECTOR B (16P)

1

PNK/BLK

FPTDR

(Frame to powertrain

torque down request)

Outputs engine retard
request signal

1

GND

TCS

Not operating

About 2.5 V
(5 V, duty 50)

Operating

About 5 V

2

WHT/RED

VREF

(Voltage reference)

Reference voltage for the
sensors of the PGM-FI
system

2

GND

About 5 V

4

BLU/ORN

TCS SW

(TCS switch)

Detects TCS switch signal

4

GND

TCS
switch

ON

(TCS indicator is

OFF)

Battery
Voltage

OFF

(TCS indicator is

ON)

0 V

6

YEL/WHT

PARK

(Parking)

Detects parking brake
switch signal and drives
brake system indicator

6

GND

With
engine
running,
parking
brake

Pressed

Below 0.3 V

Released

Battery
Voltage

7

LT GRN

ATSFTP

(AT shift position)

Detects A/T shift position
signal

7

GND

Shift the transmission to P
position, then start the engine.

About 4 V

9

RED/BLK

THLOUT

(Throttle out)

Detects throttle position
sensor signal

9

GND

Throttle
valve

Fully closed

About 0.5 V

Fully opened

About 4.8 V

10

LT GRN/

RED

PFINH

(Powertrain to frame

inhibition)

Detects TCS operation
permission signal

10

GND

Permission (normal)

About 2.5 V
(5 V, duty 50)

Inhibition (the coolant
temperature is 0°C or below)

About 5 V

Failure (TCS and/or PCM has
failed)

About 0 V

11

BLU

NEP

(Engine speed pulse)

Detects engine speed
signal

11

GND

Engine idling

About 6 V

13

GRN/YEL

TCSR

(TCS relay)

Drives TCS relay (TCS
relay is turned OFF to
shut off the power source
to the TCS solenoid and
pump motor relay when a
problem occurs)

13

GND

TCS (SCS
circuit
must be
opened)

Warning

Below 0.3 V

Normal

About 11 V

15

YEL/RED

PMR

(Pump motor relay)

Drives pump motor relay

15

GND

ABS
indicator

OFF

Pump

motor

ON

Below 1.0 V

OFF

Battery
Voltage

ON

Below 0.3 V

16

RED/WHT

TCS2

Drives TCS indicator
(Turns the indicator drive
transistor to ON, then
turns off the indicator)

16

GND

TCS
indicator

OFF

Battery
Voltage

ON

About 2 V

(cont’d)

Wire side of female terminals

03/07/29 09:56:06 61S0X050_190_0091

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０３

ABS/TCS Control Unit Inputs and Outputs for Connector C (12P)

Terminal

number

Terminal

Wire color

Terminal sign

(Terminal name)

Description

Measurement

Conditions

(Ignition switch ON (II))

Voltage

19-92

ABS/TCS Components

System Description (cont’d)

ABS/TCS CONTROL UNIT CONNECTOR C (12P)

2

BRN/YEL

BRN/BLK

LG

(Logic ground)

Ground for logic circuit

2

GND

Below 0.3 V

3

YEL/WHT

RR-OUT

(Rear-right outlet)

Drives right-rear outlet
solenoid valve

3

GND

ABS indicator

OFF

Battery
Voltage

4

YEL/BLU

FL-OUT

(Front-left outlet)

Drives left-front outlet
solenoid valve

4

GND

5

YEL/GRN

RL-OUT

(Rear-left outlet)

Drives left-rear outlet
solenoid valve

5

GND

ON

(Disconnect

16P connector

to turn

indicator on)

Below 0.3 V

6

YEL/BLK

FR-OUT

(Front-right outlet)

Drives right-front outlet
solenoid valve

6

GND

7

BLK

GND3

(Ground 3)

Ground

7

GND

Below 0.3 V

8

RED/WHT

RR-IN

(Rear-right inlet)

Drives right-rear inlet
solenoid valve

8

GND

ABS indicator

OFF

Battery
Voltage

9

RED/BLU

FL-IN

(Front-left inlet)

Drives left-front inlet
solenoid valve

9

GND

10

RED/GRN

RL-IN

(Rear-left inlet)

Drives left-rear inlet
solenoid valve

10

GND

ON

(Disconnect

16P connector

to turn

indicator on)

Below 0.3 V

11

RED/BLK

FR-IN

(Front-right inlet)

Drives right-front inlet
solenoid valve

11

GND

12

BLK

GND2

(Ground 2)

Ground

12

GND

Below 0.3 V

’99-01 models

Wire side of female terminals

03/07/29 09:56:07 61S0X050_190_0092

＊０１

Outline

19-93

ABS/TCS

TCS control

ABS control

• Improves maneuverability and stability when braking.

SOLENOID VALVE
CONTROL

WHEEL
SENSOR
SIGNAL

ABS/ TCS
CONTROL
UNIT

SOLENOID VALVE
CONTROL

WHEEL
SENSOR
SIGNAL

WHEEL
SENSOR
SIGNAL

WHEEL
SENSOR

RR

WHEEL
SENSOR
SIGNAL

WHEEL
SENSOR

RL

NO: Normally Open
NC: Normally Closed

MASTER CYLINDER

TCS NO

TCS NC

TCS NO

NO

NO

NC

PUMP

MOTOR

PUMP

P

M

P

DAMPING
CHAMBER

MODULATOR UNIT

RESERVOIR

NC

NC

WHEEL
SENSOR

FL

WHEEL
SENSOR

FR

NC

NO

NO

RESERVOIR

This system consists of the ABS/TCS control unit, the modulator unit, four wheel sensors, and the PCM. The system
integrates the ABS (Anti-lock Brake System) and the TCS (Traction Control System) and controls both systems using
the brakes.

(cont’d)

03/07/29 09:56:07 61S0X050_190_0093

• Improves accelerating ability from a standstill on slippery road surfaces.

• Improves traction when one drive wheel is on a slippery road surface.