o ring HONDA CIVIC 2000 6.G Workshop Manual

Rear Drum Brake
Index/lnspection
'1.
a
a
Never use an air hose or dly brush to clean brake assemblies,
Use an OSHA approved vacuum cleanar to avoid breathing brake dust,
Contaminated brake linings or drums reduce stopping ability.
Block the tront wheels before iacking up ths r€ar of lhe vehicle.
Block the front wheels, loosen the rear wheel nuts slightly, support the rear of the vehicle on safety stands, then
remove the rear wheels.
2. Release the parking brake, and remove the rear brake drum.
I N m 10.9 kgtm, 6.5 lbf.ftl
TENSION PIN
10 mm BOLT6,1N m 15.5 kgf m,47 tbf.ft)
WHEEL CYLINDERInspect for leakage.lf necessary, replace as an assembly.
u-cLrPReplace.
WAVEWASHER
PARKING BRAKE LEVERMarked left and right.
Check for weaknessano oamage,
UPPER RETURN SPRING
I
@JPIVOT PIN
BACKING PLATEMarked lelt and right-
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ctEv'sB
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/ ,.ro,".r r.*,"n
/ , Install securely on
| / tension pin.
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ADJUSTER BOI-TCheck ratchet teethfor wear and damage.LOWER RETURNSPRINGCheck for weaknessand oamage.BRAKE SHOEInspection, see page 19-36lf brake shoes are to bereused, mark and reassemblein same position.
SELF.ADJUSTERLEVEB
SELF-ADJUSTERSPRINGCheck for weaknessano oamage.
BRAKE DRUMInspection, see page '19 36
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19-35

Rear Drum Brake
Inspection
1.
4.
Check the wheel cylinder for leakage.
Check the brake linings for cracking, glazing, wear,
and contamination.
Measure the brake lining thickness.
Brake Lining Thickness:
Standard: 4.0 mm {0.157 in}
Service Limit: 2.0 mm 10.08 in)
NOTE; Measurement does not include brake shoe
thickness.
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. lf defective, refer to section 18
WHEEL CYLINDER
LININGS
19-36
6. Measure the inside diameter oJ the brake drum
using the inside vernier calipers.
Drum Inside Diameter:
Standard: 199.9 - 200.0 mm {7.870 - 7.874 in)
Servic€ Limit: 201.0 mm (7.913 inl
lf the inside diameter of the brake drum is more
than the service limit, replace the brake drum.
Check the brake drum for scoring, grooves, and
cracks.
7.
8.
INSIDE VERNIER CALIPERS
BRAKE ORUM

t-
Brake Shoe Disassembly
1. Remove the tension pins by pushing the retainer
springs and turning them.
TENSION PINS
RETAINER SPRINGS
Lower the brake shoe assembly, and remove the
lower return spring.
NOTEi Be careful not to damage the dust cover on
the wheel cylinder.
Remove the brake shoe assembly.
Disconnect the parking brake cable from the parking
brake lever.
Remove the upper return spring, self-adjuster lever,
and self-adjuster spring, and separate the brake
snoe5.
t
3.
4.
ADJUSTEB BOLTCheck ratchet teeth forwear ano oamage.
UPPER RETURN SPRINGCheck for weaknessano oamage.
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6. Remove the wave washer, parking brake lever, and
pivot pin from the brake shoe by removing the U-
clrp.
PARKING ERAKEI-EVER
WAVE WASHER
/
@@
I
IU-CLIPReplace.
Brake Shoe Reassembly
1.Apply brake cylinder grease (P/Nr 08733 - B020E) or
equivalent rubber grease to the sliding surface of
the pivot pin, and insert the pin into the brake shoe.
Install the parking brake lever and wave washer on
the pivot pin and secure them with the U-clip,
NOTE: Pinch the U-clip securely to prevent the pivot
pin from coming out of the brake shoe.
,6;::"'
(cont'd)
19-37
LEVER

Rear Drum Brake
Brake Shoe Reassembly {cont'dl
Connect the parking brake cable to the parking
brake lever.
Apply grease on each sliding surface.
!@ contaminated brake linings reduce
stopping ability. Keep grease or oil off the blake lin-
ings. 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.
+a Sliding surlace
Apply Molykote 44MA to the brake shoe ends and
opposite edges ofthe shoes as shown.
_' o Opposite edge of the shoe+O Brake shoe ends
19-38
13.
5. Clean the threaded portions of clevises A and B.
Coat the threads of the clevises with grease. To
shoften the clevises, tun the adjuster bolt.
6. Hook the self-adjuster spring to the self-adjuster
lever first, then to the brake shoe
7. Install the clevises and upper return spring. noting
the installation direction.
NOTE: Be careful not to damage the wheel cylinder
dust covers,
8. Install the lower return spring.
9. Install the tension pins and retaining springs.
uppER RETURT{ SpRtNG CLEVIS B
CLEVIS A
Installthe brake drum.
lf the wheel cylinder has been removed, bleed the
brake system (see page 19-7), and check for leaks at
brake line connections, and retighten if necessary.
Depress the brake pedal several times to set the
self-adjusting brake.
Adjust the parking brake (see page 19-6).
't0.
11.
12.
LOWER RETURN SPRING

Anti-lock Brake System (ABSI
Featu res/Construction
When the brake pedal is depressed during driving, the wheels can lock before the vehicle comes to a stop, In such a case,the maneuverability of the vehicle is reduced if the front wheels are locked, and the stability of the vehicle is reduced if therear wheels are locked, creating an extremely unstable condition. The ABS precisely controls the slip rate of the wheels toensure the grip force of the tires. and it thereby ensures the maneuverbility and stability of the vehicle.Judging the vehicle speed. 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
Slip Rate
BRAKINGSTART POINT
ROTATIONALDIRECTION
RADIALDIRECTIONOF THEROTATIONALOIRECTION
A: Distance without slio8: Slippsd distanceC: Actuel distance
sr-rrmre=f=SLIP RATEVEIIICLE SPEED - WHEEL SPEEOVEHICLE SPEED
19-46

t-Operation
t
ABS Control Unit
Main 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 is a three-mode system, that is pressure reduction, pressure retaining and pressure intensi-
fying modes.
Self -diagnosis Funqtion
The ABS control unit is equipped with a main CPU and a sub CPU, and the CPUS check each other'
The CPUs check the circuit of the svstem.
When the CPUS detect failure, they shift to the "system down mode" or the "control inhibition mode"
The self-diagnosis can be classifield into these four categories:
O: Initial diagnosis
@: Except ABS control
@: During ABS control
@: During warning
On-board Diagnosis Funstion
The ABS control unit is connected to the data link connector {16P).
The ABS system can be diagnosed with the Honda PGM Tester.
(cont'd)
MODEABS INDICATOR LIGHTMAIN
RELAY
SOLENOID
VALVECPURestart conditionDTC
SYSTE IV
DOWNONNo
operation
Drive
inhibitionOperation*rlgnition
switchOFF + ONMemory
CONTROL
INHIBITIONONNo
operalron
Drive
inhibitionOperationAutomaticMemory
*1: Except CPU failure
/
19-47

Troubleshooting Precautions
ABS Indicator Light
I The ABS indicator light comes on when the ABS control unit detects a problem in the system. However, even thoughthe system is normal, the ABs indicator light can come on, too, under the following conditions. To determine theactual cause of the problem, question the customer about the problem, taking the following conditions into consider-ation.
. Signal disturbance
. Wheel soin
. Only drive wheels rotate. Battery voltage fluctuates
2. When a problem is detected and the ABS indicator light comes on, the indicator light can stay on untat the ignitionswitch is turned off, or it can automatically go off, depending on the mode.. Lightstayson until the ignition switch isturned off;When the system is inthesvstem down mode.o Light automatically goes off:When the system is in the control inhibition mode.(refer to symptom-to-system chart)3 The ABS indicator light stays on when the system is reactivated without erasing the DTC, but it goes off after startingthe car.
when the wheel sensor system is faulty and the ABS indicator light comes on, the algorithm of the system automaticallyturns off the ABS indicator light after the wheel speed signal returns to the normal speed. while, when the DTC is erased,the CPU is reset and the ABS indicator light goes off when the system check€d out normal by the initial diagnosis.Therefore, test-drive the car after servicing the wheel sensor system, and be sure that the ABS indicator light does notcome on.
4. When the ABS control unit outputs battery voltage to the gauge assembty, the ABS indicator light goes off.
Diagnostic Trouble Code (DTC)
1. The diagnostic trouble code (DTC) is memorized when a problem is detected and the ABS indicator light does not gooff, or when the ABS indicator light comes on.The DTC is not memorized when the ABs indicator right comes on unress the cpU is activated.2. The memory can hold any number of DTCs. However, when the same DTc is detected twice or more, the later one iswritten over the old one.
Therefore. when the same problem is detected repeatedly, it is recorded as one DTC.3. The DTCS are indicated in the order of ascending number, not in the order thev occur.4. The DTCS are memorized in the EEpROM {non-volatile memorv}.Therefore, the memorized DTCS cannot be canceled by disconnecting the battery. perform the specified orocedures toerase.
Solf-diagnosis
1. The self-diagnosis can be classifield into these four categories:' Initial diagnosis; Performed right after the engine sta rts and untiltheABs indicator light goes off.o Except ABS control: Performed when the ABS is not functioning,. During ABS control: Performed when the ABS is functioning.. During warning: Performed when the ABS indicator light is ON.2 The system performs the following controls when a problem is detected by the self-diagnosis:. ABS indicator light ON. Memory of DTC
. Mode change to the "system down mode,, or the "control inhibition mode,,.
MODEABS INDICATOR LIGHTMAIN
RELAY
SOLENOID
VALVECPURestart conditionDTC
SYSTEM
DOWNONNo
operal|on
Drive
inhibitionOperation+rlgnition
switchOFF - ONMemory
CONTROL
INHIBITIONONNo
operat|on
Orive
inhibitionOperationAutomaticMemory
*1: Except CPU failure
19-54

tJ
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Kickback
1. The motor operates when the ABS is functioning, and the fluid in the reservoir is forced out to the master cylinder
causing kickback at the brake pedal.
2. TheABScontrol unit operates the solenoid valve when the brake pedal is released afterthe initial diagnosis Youmay
hear the faint solenoid valve operation sound at this time. but it is normal.
Pump Motor
1. The pump motor operates when the ABS is functioning
2. The ABS control unit checks the pump motor operation during acceleration. You may hear the faint operation sound
at this time. but it is normal.
Brake Fluid Replacament/Air Blsading
1. Brake fluid replacement and air bleeding procedures are the same as for conventional brakes
Troubleshooting
1. The troubleshooting flowcharts explain the procedures on the assumption that the cause of the problem is still pre-
sent and the ABS indicator light is still on.
Note that troubleshooting following the flowchart when the ABS indicator light does not come on can result in incor-
rect judgment.
2. Ouestion the customer about the conditions when the problem occurred, and try to reproduce the same conditions
for troubleshooting.
self,diagnosis is made at various times such as the initial diagnosis, except ABS control. during ABS control, during
acceleraiion, during the specified vehicle speed, etc. Therefore, the symptom cannot be checked unless the check
conditions match with the problem conditions
3. When the ABS indicator light does not come on during the test drive, but the troubleshooting is performed based on
the DTC, check for the loose connectors. poor contact of the terminals, etc, before troubleshooting.
4. After troubleshooting, erase the DTC and test-drive the car. Be sure that the ABS indicator light does not come on.
5. The connector illustrations show the female connectors with a single outline and the male connectors with a double
ouflrne.
6. The connector terminal cavities containing female terminals are always numbered by looking at the connector from
the wire side. and the cavities containing male terminals are always numbered by looking at the connector from the
terminal side.
r'
19-55

Diagnostic Trouble Code (DTCI
Diagnostic Trouble Code {DTC) Indication
NOTE: This operation can also be carried out with the Honda pGM Tesrer.
l connect the scs service connector to the service check connector inside the passenger,s side kick panel.
2. Turn the ignition switch ON (||). but do not start the engine.NOTE: Do not depress the brake pedal when turning the ignition switch.
3 Record the brinking frequency of the ABS indicator right. The brinking frequency indicates the DTc.
4, Turn the ignition switch OFF, and remove the SCS service connector.NorE: The Mslfunction Indicator Lamp (MlL) will stay on after the engine is started if the scs service connector isconnected.
5. Erase the DTC.
Condhions for DTC indication. The vehicle is stoDDed.. The SCS service connector is connected before the ignition switch is turned ON fll).. The brake pedal is released.. Th€ SCS service connector remains connected during this procedure
The DTG indication stops 8nd the ABs conltol unit executes the softwaro tunqtion if at least one of the following condi-tions b satisfied:
o The vehicle is not stoDoed.' The ABS control unit receives the normat signal (which is for the ABS controt unit) from a Honda pGM Tester.. The SCS service connector is disconnected during this procedu.e,
u.s.A.
@
CANADA
@
SERVICE CHECKCONNECTOR {2PISCS SERVICE CONNECTOR07PAZ - 0010100
ABS INDICATOR LIGHT
DTC : 3 3
A8S INDICAIOR LIGHT
Snilion swirch
' when the ignition switch is turned oN (ll), the ABs indicator light comes on to check the bulb. Do not count it as a DTc.o The ABS control unit can memorize any number of DTCs.. The new DTC is not memorized when the ABS control unit has already memorized the same DTC,.lftheDTCisnotmemorized,theABSindicatorlightstaysONafteritgoesofffor3.6seconds.
19-56

LJDTG Erasure
1.
2.
Connect the SCS service connector to the service check connector inside the passenger's side kick panel.
Depress the brake pedal.
Turn the ignition switch oN (ll) while holding the brake pedal, but do not start the engine. The ABS indicator light
goes off after two seconds.
After the indicator light goes off, release the brake pedal The indicator lightcomeson after four seconds
After the indicator light comes on, depress the brake pedal again. The indicator light goes off again after four sec-
onds. The brake pedal is still depressed.
4.
5.
\t
6. After the jndicator light goes off, release the brake pedal again'
7. After four seconds, the indicator light blinks twice for 0 3 second and the DTC is erased
8. Confirm the DTC indication, and check that the DTC was erased
NOTE: Always maintain these steps. lf you disconnect the scs service connector and/or fail to operate the brake pedal
according to the indicator light indication, the DTC will not be erased
Conditions for DTC erasure
o The vehicle is stopped.
. The SCS service connector is connected before the ignition switch is turned ON {ll)
. The brake pedal is depressed before the ignition switch is turned ON (ll)'
. The SCS service connector remains connected during this procedure
The DTC erasure stops and ABS control unit executes the software lunction it at least one ot the following conditions is
satisfied:
o The vehicle is not stopped.
. The SCS service connector is disconnected during this servace'
.TheABscontro|unitreceivesthenormaIsigna|(whichisfortheAEscontro|unit)fromaHondaPGMTester'
. The brake pedal is not operated according to the indicator light indication
. The DTC erasure is finished
ABS INDICATOR LIGHT
OFF
DEPRESS
BRAKE PEDAL
RELEASE
0.3sec
lqnition switchoN (I)
J
19-57