Page 177 of 2267
ABS ACTUATOR
NBR262 Front master cylinder secondary
To rear wheel cylinder (LH)
To rear wheel cylinder (RH)
Actuator/ground cable
10.8 - 14.7
(1.1 - 1.5,8.0 - 10.8)
: N´m (kg-m, in-lb)
: N´m (kg-m, ft-lb) Actuator bracket7-9
(0.7 - 0.9, 5.1 - 6.5) ABS actuator & electric control
unit
11 - 15 (1.1 - 1.5, 8.0 -10.8)To front wheel cylinder (RH)
To front wheel cylinder (LH)
From master cylinder primary
10 - 14 (1.0 - 1.4, 7.2 - 10.1)
FRONT LockUnlock
ANTI-LOCK BRAKE SYSTEM
Removal and Installation (Cont'd)
BR-55
Page 178 of 2267

1. Disconnect battery cable.
2. Drain brake fluid. Refer to BR-7
3. Unlock the slider then disconnect the electrical harness con-
nectors from ABS control unit.
4. Identify each brake pipe with corresponding actuator port
hole and mark them accordingly.
5. Disconnect brake pipes and move them away from actuator.
Do not force brake pipes so as to kink them or bend them
excessively.
Ensure that brake fluid does not come into contact with
any parts.
6. Loosen/remove mounting nuts between actuator and
bracket.
CAUTION:
After installation, pay attention to the following points:
lRefill brake fluid and bleed air. Refer to ªCHECK AND
ADJUSTMENTº, BR-7 and ªBLEEDING BRAKE
SYSTEMº, BR-8, respectively.
lThe installation procedure is as follows:
1. Install actuator on bracket without tightening fixings.
2. Assemble brake tubes to actuator without tightening tube
nuts. Ensure that correct tubes are connected to each port.
3. Fully tighten actuator and bracket fixings to specified torque.
4. Fully tighten flare nuts to specified torque, BR-10.
5. Secure ABS control unit harness connector and battery
cable.
NBR261 ABS control unit har-
ness connector
ABS control unitABS actuator
PULL
NBR249
NBR171 ABS actuator
.10.8 - 14.7 N´m
(1.1 - 1.5 Kg-m,
8.0 - 10.8 ft-lb)
ANTI-LOCK BRAKE SYSTEM
Removal and Installation (Cont'd)
BR-56
Page 179 of 2267

How to Perform Trouble Diagnoses for Quick
and Accurate Repair
INTRODUCTION
The ABS system has an electronic control unit to control major
braking functions. The control unit accepts input signals from
sensors and utilises the data to instantly drive the actuators. It is
essential that both input and output signals are correct and
stable. It is also important to check for conventional problems:
such as air leaks in booster lines, lack of brake fluid, or other
problems with the brake system.
It is much more difficult to diagnose a problem that occurs inter-
mittently rather than catastrophically. Most intermittent problems
are caused by poor electric connections or faulty wiring. In this
case, careful checking of suspicious circuits may help prevent
the unnecessary replacement of good parts.
A visual check may not be sufficient to find the cause of the
problems, so a road test should also be performed.
Before undertaking actual checks, take just a few minutes to talk
with a customer who approaches with a ABS complaint. The
customer is a very good source of information on such problems;
especially intermittent ones. Through the talks with the customer,
find out what symptoms are present and under what conditions
they occur.
Start your diagnosis by looking for ªconventionalº problems first.
This is one of the best ways to troubleshoot brake problems on
an ABS controlled vehicle.
SEF233G
SEF234G
TROUBLE DIAGNOSES
BR-57
Page 180 of 2267
WORK FLOW
CHECK INFReference item
LISTEN TO CUSTOMER COMPLAINTS
INVESTIGATE ITEMS YOU SHOULD CARRY OUT
RELARED TO EACH SYMPTOM AND NOTEFGo toMALFUNCTION
CODE/SYMPTOM
CHART,BR-76.
CHECK FOR ANY SERVICE BULLETINS.
EELIMINATE GOOD SYSTEMS AND GOOD PARTSFGo toPreliminary
Check,BR-59.
Not self-diagnostic item Self-diagnostic item
H
H
DETERMINE MALFUNCTION-
ING CIRCUIT(S) OR PART(S).
FGo toSelf-diagnosis,
BR-67.
Self-diagnosis
H
lGo toDiagnostic
Procedure(s)6-12,
BR-85.
lGo toComponent
Parts and Harness
Connector
Location,BR-60.
ELIMINATE GOOD PART(S), HARNESS(ES) OR CONNEC-
TOR(S) THROUGH ELECTRICALLY TESTINGF
Malfunctioning
harness(es) and
connector(s)Malfunctioning parts
H
H
INSPECTION OF EACH
COMPONENT
FGo toDiagnostic Pro-
cedure(s)1-5,BR-77.
H
REPAIR
REPAIR OR REPLACE
HH
NG
FINAL CHECK
OK
CHECK OUT
H
H
H
H
H
TROUBLE DIAGNOSES
How to Perform Trouble Diagnoses for Quick
and Accurate Repair (Cont'd)
BR-58
Page 181 of 2267

Preliminary Check
Check brake fluid level in reservoir
tank.
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Low fluid level may indicate brake pad
wear or leakage from brake line.
Check brake line for leakage.
OK
ENG
Repair.
F
Check brake booster for operation and
air tightness. Refer to BR-18.
OK
ENG
Replace.
F
Check brake pads and rotor. Refer to
BR-23, 26, 33.
OK
ENG
Replace.
Check brake fluid level in reservoir tank.
OK
ENG
Fill up brake fluid.
Check warning lamp activation.
When ignition switch is turned on,
warning lamp turns on.
OK
ENG
Check fuse, warning
lamp bulb and warning
lamp circuit.
Check warning lamp for deactivation.
When ignition switch is turned on,
warning lamp turns on, then deacti-
vates after 1 second.
OK
ENG
Go to Self-diagnosis,
BR-67 and BR-70.
Drive vehicle at 30 km/h (19 mph) for
at least one minute.
Ensure warning lamp remains off while
driving.
OK
ENG
Go to Self-diagnosis,
BR-67 and BR-70.
END
NBR141 MAX.
MIN.
SBR389C
SBR058C
SBR059C
.
NBR284 ABS warning light
H
H
H
H
H
H
H
H
H
TROUBLE DIAGNOSES
BR-59
Page 182 of 2267
Component Parts and Harness Connector
Location
NBR285
Brake tube connectorWarning light
ABS actuator
and electric unit
Front wheel sensors
Front left wheel sensor connector
Front right wheel sensor connector
Sensor
E17
Rear wheel sensors
Rear left wheel sensor connector
Rear right wheel sensor connector
B33Rear left wheel
sensor connector
B32Rear right wheel
sensor connector.Rear tire
.E78
E57
Sensor
TROUBLE DIAGNOSES
BR-60
Page 183 of 2267
Circuit Diagram for Quick Pinpoint Check
YBR228
TROUBLE DIAGNOSES
BR-61
Page 184 of 2267
Wiring Diagram Ð ABS Ð
MODELS WITH SELF-DIAGNOSIS FUNCTION
YBR208 BATTERYIGNITION SWITCH
ON or START
FUSE
BLOCK
(J/B)Refer to EL-POWER.
: LHD models
: RHD models: CVT models
: M/T models
RELEASEDDEPRESSEDSTOP LAMP
SWITCH
FUSE
BLOCK
(J/B)COMBINATION METER
(ABS WARNING LAMP)
ABS ACTUATOR
AND ELECTRIC
UNIT
(CONTROL UNIT)
TCM
(TRANSMISSION CON-
TROL MODULE)DATA LINK CON-
NECTOR
Refer to las page (Foldout page).
TROUBLE DIAGNOSES
BR-62