Wheel HONDA CR-V 2000 RD1-RD3 / 1.G Workshop Manual

Check the wheel cylinder for leakage.
Check the brake linings for cracking, glazing, wear,
and contamination.
Measure the brake lining thickness. Measurement
does not include brako shoe thickness.
Brake Lining Thicknoss:
Standard: 3.9 -,1.5 mm {0.15 - 0.18 inl
Sorvice Limil: 2.0 mm {0.08 in}
lf the brake lining thickness is less than the service
limit, replace the brake shoes as a set.
Check the bearings in the hub unit for smooth oper-
ation; if the bearing require servicing. refer to sec-
tion 18.
7.
WHEEL CYLINOER
LININGS
8. Measure the inside diameter of the brake drum
with inside vernier calioers,
Drum Insido Diamoter:
Standard: 219.9 - 220.0 mm (8.657 - 8.661 in)
Service Limit: 221.0 mm {8.700 inl
lf the inside diameter of the brake drum is more
than the service limit, replaca the brake drum.
Check the brake drum for scoring, grooves, and
cracKs.
10.
BRAKE DRUM
19-17
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Rear Drum Brakes
Brake Shoes Replacement
1. Remove the upper return spring with the tool.
l@ w€ar eye protestion when using the
brske spring wrench.
RETAINER SPRINGBRAKE SPRING WBENCH{Commerciallv available)
Remove the tension pins by pushing the retainer
spring and turning them.
Lower the brake shoe assembly, and remove the
lower return spring, Make sure not to damage the
dust cover on the wheel cylinder,
Disconnect the parking brake cable from the parking
brake lever.
Remove the brake shoe assembly,
Remove the upper return spring, self-adjuster lever,
and self-adjuster spring, and separate the brake
shoes.
TENSION PIN
5.
o.
SELF.ADJUSTER LEVER UPPER RETURN SPRING
19-18
7. Remove the wave washer, parking brake lever. and
pivot pin from the brake shoe by removing the U-
cliD.
BRAKE SHOE
Apply brake cylinder grease (P/N: 08733 - 80202) or
equivalent rubber grease to the sliding surface of
the pivot pin, 8nd insert the pin into the brake shoe.
Install the parking brake lever and wave washer on
the pivot pin, and secure them with a new U-clip.
. lnstall the wave washer with its convex side fac-
Ing our.
. Pinch the U-clip securely to prevent the pivot pin
from coming out of the brake shoe.
U.CLIPReplace.
\\
w

U-CLIPReplace.WAVE WASHERReplace.
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10.
11,
Connect the parking brake cable to the parking
brake lever,
Clean the threaded portions of clevises A and B.
Coat the threads of the clevises with grease. To
shorten the clevises, turn the adiuster bolt.
Hook the self-adjuster spring to the self-adjuster
lever first, then to the brake shoe,
Install the clevises and upper return spring noting
the installation direction. Be careful not to damage
the wheel cylinder dust covers.
Installthe lower return spring.
12.
14.
UPPER RETURN SPRING
Apply rubber greaseto sliding surface.
15. Apply grease on each sliding surface. Keep grease
or oil off the brake linings. Wipe any excess grease
off the parts.
. Apply brake cylinder grease (P/N: 08733 - 8020E)
or equivalent rubber grease to the sliding sur-
faces as shown.
..4 Slrdrng surface
Apply Molykote 44MA to the brake shoe ends
and opposite edges of the shoes as shown.
.. a Opposite edge of the shoe.: a) Brake shoe ends(Shoe side ends and backingplate contact surface)
(cont'd)
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Rear Drum Brakes
Brake Shoes Replacement (cont'd)
16. Install the brake shoes onto the backing plate. Be
careful not to damage the wheel cylinder dust cov-
ers.
17. Install the tension pins and the retainer springs.
18. Hook the upper return spring with the tool.
@ wsar eye proieclion whon using tho
brtko spring wronch.
lnstallthe brake drum.
lf the wheel cylinder has been removed, bleed the
brake system (see page 19-7).
Press the brake pedal several times to set the self-
adjusting brake.
Adjust the parking brako (see page 19-6).
19.
20.
21.
UPPER RETURN SPRING
TENSION PINS
19-20
7.
SEALANT
Wheel Cylinder Replacement
CAUTION:
. Do not spill brake fluid on th6 vehicle; it may damage
the paint; if brako fluid doos contact tho paint, wash
it off immedialely whh water.
. To pr6v6ni 3pills, cov6r th6 hose ioinls with rags ol
shop lowels,
. Use only a genuine Honda whoel cylinder spocial
bolt.
Remove the brake shoes {see page '19-18).
Disconnect the brake line,
BACKING PLATE
1.
15 N,m 11.5 kgt m,11 tbf.ftl
WHEEL CYLINDER
9 N.m 10,9 kgf'm.6.5 rbtft)
Remove the bolt and the wheel cylinder from the
backing plate.
Apply sealant between the wheel cylinder and back-
ing plate, and install the wheel cylinder.
Install the removed parts in the reverse order of
removal.
Fill the brake reservoir up. and bleed the brake sys-
tem {see page 19-7).
After installation. check for a leak at the line joint.
and retighten if necessary.
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Anti-lock Brake System (ABSI,'97 - 00 Models
Special Tools ............. 19-26
Component Locations ......................... 19-27
Anti-lock Brake System (ABS)
Features/Construction ............. ......, 19-2A
Circuit Diagram ......... 19-32
ABS Control Unit Terminal
Arrangement ......... 19-34
Troubleshooting Precautions ............. 19-36
Diagnostic Trouble Gode (DTC)
Diagnostic Trouble Code (DTC)
Indication (SCS Model ................ 19-38
DTG Erasure (MES Mode) ............... 19-39
Troubleshooting lndex .................... 19-40
Troubleshooting
ABS Indicator Light Does Not
Come On ............ 19-41
ABS Indicator Light Does Not
Go Off (No DTC) ........................... 19-43
DTC 1r - 18:
Wheel Sensor .... 19-45
DTC 31 - 38:
Solenoid ............. 19-47
DTC 51 - 53:
ABS Pump Motor ......................... 19-49
DTC 54:
Main Relay ......... 19-52
DTC 61:
lgnition Voltage ........................... 19-54
DTC 81:
Central Processing Unit (CPU) .... 19-55
Modulator Unit
Removal/lnstallation ....................... 19-56
ABS Control Unit
Replacement ..,...... 19-57
Pulsers/Wheel Sensors
Inspection .............. 19-57
Wheel Sensor Replacement ............ 19-58
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Component Locations
NOTE: The illustrations show the '97 - 98 models. The '99 - 00 models are similar.
ABS CONTROL UNITRIGHT-REAR WHEEL SENSOR
UNDER.HOOD ABSFUSE/RELAY BOX
RIGHT.FRONT WHEELSENSOR CONNECTOR
RIGHT-FRONTWHEEL SENSORRIGHT-REAB WHEELSENSOR CONNECTOR
MODULATOR UNIT
LEFT.FRONT WHEEL SENSOB
UNDER.DASH FUSE,/RELAY 8OX
UNDER.HOOO FUSE/RELAY AOX
IGl I(, AI FUSE
ABS +B 120 Al FUSEPUMP MOTOR ('II AI FUSE
HOBN/STOP I15 AI FUSE
UNDER.HOOD ABS FUSE/RELAY BOX
LEFT.FRONT WHEELSENSOE CONNECTOR
GAUGE ASSEMBLY
ABS INDICATOR
UNDER-DASH FUSE/NELAY BOX
METER {7.5 AI FUSE
MOTOR RELAY
19-27
SERVICE CHECK CONNECTOR {2PI
D!
trtrtr
[r D!
ABS {7.5 AI FUSEMTR CHECK 17.5 AI FUSE
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Anti-lock Brake System (ABS)
Features/Construction
When the brake pedal is pressed during driving, the wheels can lock before the vehicle comes to a stop. In such an event,
the maneuverability of the vehicle is reduced if the front wheels are locked, and the stability of the vehicle is reduced if the
rear wheels are locked, creating an extremely unstable condition. The ABS precisely controls the slip rate of the wheels to
ensure maximum grip force from the tires, and it thereby ensures maneuverbility and stability of the vehicle.
The ABS calculates the slip rate of the wheels based on the vehicle speed and the wheel speed, then it controls the brake
fluid pressure to attain the target slip rate.
Grip Force of Tire and Road Surlace
COEFFICIENT OFFRICTION
TARGET SLIP RATE
RADIALOIRECTIONOF THEROTATIONALDIRECTION
SLIP RATE
19-24
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ABS Control
The ABS 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 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 reducing, pressure retaining, and pressure intensi{ying modes.
Self-diagnosis Function
The ABS control unit is equipped with a main cPU and a sub cPU, that check each other for problems.
The CPUs check the circuit of the system.
When the CPUS detect failure, they shift to the "system down mode" or the "control inhibition mode".
The self-diagnosis can be classitied into these four categories:
O: Initial diagnosis
O: Except ABS control
O; During ABS control
@: During warning
On-board Diagnosis Function
The ABS system can be diagnosed with the Honda PGM Tester.
The ALB Checker cannot be used with this system. For air bleeding. and checking wheel sensor signals, use the Honda
PGIM Tester. See the Honda PGM Tester user's manuals for specific operating instructions.
(cont'd)
19-29
ABS CONTROL I-INIT
MODEABSINDICATOR LIGHTMAIN
RE LAY
SOLENOID
VALVERestan conditionDTC
SYSTEM
DOWNONNo
operatron
Drive
inhibitionOperation*rlgnition
switchOFF - oN (ll)Memory
CONTROL
INHIBITIONONNo
operaton
Drive
inhibitionOperationAutomaticlVemory
*1: Except CPU failure
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Anti-lock Brake System (ABS)
Features/Gonstruction (cont'd)
ABS Modulator
The ABS modulator consists of the inlet solenoid valve, outlet solenoid valve, reservoir, pump, pump motor and thedampjng chamber.
The modulator reduces the caliper fluid pressure directly. lt is a circulating-type modulator because the brake fluid circulatesthrough the caliper, reservoir and the master cylinder.The hydraulic control has three modes: pressure reduction, pressure retaining and pressure intensifying modes.The hydraulic circuit is the independent four channel-type, one channel for each wheel.
SOLENOID VALVE
t-
Pressure intensifying mode: Inlet valve open, outlet valve closed,
Pressure retaining mode:
Pressure reduction mode:
Motor operation mode:
Master cylinder fluid is pumped out to the caliper.Inlet valve closed, outlet valve closed.
Caliper fluid is retained by the inlet valve and outlet valve.Inlet valve closed, outlet valve ooen
Caliper fluid flows through the outlet valve to the reservoir.When starting the pressure reduction mode. the pump motor is ON.When stopping ABS operation, the pump motor is OFF.The reservoir fluid is pumped out by the pump, through the damping chamber, to the mastercylinder.
PUMP MOTOR
19-30
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Wheel Sensor
The wheel sensors are the magnetic contactless type. As the gear pulser teeth rotate past the wheel sensor's magnetic
coil, AC current is generated. The AC frequency changes in accordance with the wheel speed. The ABS control unit detects
the wheel sensor signal frequency and thereby detects the wheel speed
at LOW SPEED
wheel Sp€od and Modulatot Control
VEHICLE SPEED
VEHICLE SPEED
WHEEL SPEED
PRESSU
OUTLETVALVE ON
OFF
INLETVALVE ON
OFF
MOTOR
ON
OFF
When the wheel speed drops sharply below the vehicle speed, the outlet valve opens momentarily to reduce the caliper
fluid pressure. The pump motor starts at this time. As the wheel speed is restored. the inlet valve opens momentarily to
increase the caliDer fluid oressure.
F
GEAR PULSER
19-31
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