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

ABS Control Unit Terminal Arrangement
ABS CONTROL UNIT 26P CONNECTOR
Wire side of female terminals
TeiminalnumbelWiiecolorTerminal3ignTeiminalnamglDescription
Voltrge
tdminalsCondhions(lgnition Switch ON llll)Output voltago
1GRNn/VHTPCOM(Primary
common)
Power source for the solenoidvalve and pump motor.1-GNDON6
ONOV
OFFAC:3-6V
2BLI(WHTSCOM(Secondary
common)
Power source for the solenoid2-GNDOFF
lConnect the SCS seNice] connector IApprox.3 V
BLVBLU(lgnition 2)Detects ignition switch 2signal. (System activate signal)3-GNDBattery Voltage
4BLUA/ELRRO(Rear-right 0)Detocts right-rear wheelsensor srgnat.When the wheel isturned at 1 turn/second.
53 mV or above ondigitaltester (ACrange) {Beference)150 mvtrp or aboveon oscilloscope
GRYRLO(Rear-left 0)Detects left-rear wheel sensorsrgnat.6-19
8GRNFRO(Fronr-right 0)Detects right-front wheelsensor signal.8-21StopsApprox.2.5 VSTOP
{Stop)Detects bfake switch signal.(Prevents unnecessary ABS operation)9-GNDBrake pedal pressed.Battery Voltage
Brake Dedal released.OV
10BRN^/VHTFLO(Front-left 0)
Detects left-front wheel sensorsrgnal.
10-23
When the wheel isturned at 1 turn/second.
53 mV or above ondigitaltester lACrange) (Reference)
150 mvpp or aboveon oscilloscope
StopsADprox. 2.5 V
YELRL-oUT(Rearleft outlet)
Drives left-rear outlet solenoid12.GNDONONOV
OFFAC:3-6V
13RED^/vHTRR.IN(Rear-right
inlet)
Drives right-rear inlet solenoid13.GNDOFF
lConnect the SCS service\ connector IApprox. 3 V
14WHT/GRNB1(Baftery 1)Power source for the solenoidvalve and pump motor.14.GND
Every timeBattery Voltage82(Battery 2)Power source for the solenoidvalve and pump motor.15-GND
16BLKGND2(Ground 2)Ground for the ABS controlunit.16-GNDBelow 0.3 V
't7GRN/YELRR1(Rear-right 1)Detects right-rear wheelsensor signal.'t7 -4
When the wheel is turnedat l turn/second,
53 mV or aboveon digitaltester(AC range)(Reference) 150mVp-p or aboveon oscilloscope
19LT BLURL1(Rearieft 1)Detects left-rear wheel sensorsignal.19-6
GRN/BLKFR1(Front-right 1)Detects right-front wheelsensor srgnat.21-8
23GBN/ORNFL1{Front-left 1}Detects left-front wheel sensorsagnal.23-10StopsApprox. 2.5 V
REDRLI N(Rear-left inlet)
Drives left-rear inlet solenoid
25,GND
ON
=
-9ONOV
AC:3-6V
OFF
/Connect the SCS service] conneclor IApprox. 3 V
26BLKGND3(Gtound 3)Ground tor the ABS controluntI.26-GNDBelow 0.3 V
19-34
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Troubleshooting Precautions
ABS lndicalor
1 lf the system is oK, the ABS indicator goes off two seconds after turning the ignition switch oN 1l) wathout staningthe engine, and then comes on again and goes off after two seconds. This occurs because the ABS control unit isturned on by the lG2 power source.2. The ABS indicator comes on when the ABS control unit detects a problem in the system. However, even thouoh thesystem is operating properly, the ABs indicator will come on too, under the following conditions:. Signal disturbance
. Wheel spin
. Only drive wheels rotate. Battery voltage fluctuates
To determine the actual cause of the problem, question the customer about the problem, taking these conditions intoconsideration:
3 When a problem is detected and the ABS indicator comes on, the indicator can stay on until the ignition switch isturned OFF, or it can automatically go off, depending on the mode.. Indicator stays on untilthe ignition switch is turned off: When the system is in the system down mode.. Indicator automatically goes off: When the system is in the control inhibition mode.4 The ABS indicator stays on when the system is reactivated without erasing the DTC, but it goes off after starting thevehicle.
When the wheel sensor system is faulty and the ABS indicator comes on. the algorithm of the system automatically turnsoff the ABS indicator after the wheel speed signal returns to the normal speed. Also, when the DTc is erased, the cpu isreset and the ABS indicator goes off when the system checked out normal by the initial diagnosis.Therefore, test-drive the vehicle after servicing the wheel sensor system. and be sure that the ABS indicator does notcome on.
5 When the ABS control unit outputs battery voltage to the gauge assembly, the ABS indicator ooes off.
Diagnostic Trouble Code (DTCI
1. The diagnostic trouble code (DTc) is memorized when a problem is detected and the ABS indicator does not go off,or when the ABS indicator comes on.The DTc is not memorized when the ABS indicator 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 tater 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 they 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 procedures toerase the DTCS.
Self-diagnosis
1. Self-diagnosis can be classified into these four categories:' Initial diagnosis: Performed right after the eng ine starts and untir theABS indicator goes off.. 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 is ON.2. The system performs the fo|owing contrors when a probrem is detected by the serf-diagnosis:. ABS indicator ON. Memorv of DTC. Mode changetothe "system down mode,, or the ,,control inhibition mode,,.
MODEABS INDICATORMAIN
RELAY
SOLENOID
VALVECPURestart conditionDTC
SYSTEM
DOWNONNo
operation
Drive
inhibitionOperation*rlgnition
switchoFF - ON l)Memory
CONTROL
INHIBITIONONNo
operal|on
Drive
inhibitionOperationAutomaticlMemory
*1: Except CPU failure
19-36
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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. The ABS control unit operates the solenoid valve when the brake pedal is released after the initial diagnosis You may
hear the solenoid valve operate at this time, but it is normal
Pumo Motol
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 motor operate at this
time, but it is normal.
Brake Fluid Replacement/Ail Bleeding
L Brake fluid replacement and air bleeding procedures are the same as for vehicles without ABS To ease bleeding, start
with the front wheels.
Troubleshooting
1. The troubleshooting flowchart procedures assume that the cause of the problem is still present and the ABS indicator
is still on. Following the flowchart when the ABS indicator does not come on can result in incorrect diagnosis.
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
acceleration, during the specified vehicle speed, etc. Therefore, the symptom canngt be checked unless the check
conditions match with the problem conditjons
3. When the ABS jndicator does not come on during the test-drive. but troubleshooting is performed based on the DTC,
check lor loose connectors, poor contact of the terminals, etc., before you start troubleshooting.
4. After troubleshooting, erase the DTC and test-drive the vehicle. Be sure the ABS indicator does not come on.
5. The connector illustratjons show the female terminals with a single outline and the male terminals with a double out-
l ne.
ABS Function Test
To simulate ABS operation and activate the solenoid valves and pump, use the Honda PGM Tester.
Connect the PGM Tester to the 16P Data Link Connector (DLC). When the System Select menu is displayed, select the ABS
Test Mode menu, and follow the tester's prompts.
19-37
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Diagnostic Trouble Code (DTC)
Troubleshooting Index
This operation can also be done with the Honda pGM Teste..
*: lf DTcs 11-18 {wheel sensor codes) were detected the last time the vehicle was driven, the ABs indicator wi

stav onuntil the ignition switch is turned ON (ll), and the control unit confirms that the wheel sensors are OK,
19-40
DTC3R DIAGNOSIS/SYMPTOM
DETECTION TIMING
PROBLEM
LOCATION
REFER
TO
PAGE
Io
<=EXzd
8 EE
93gl (J
4,,to 2Ee2
B8
2=
ET63
No
DTC
OFFABS indicator does not come on.19,4'l
ONABS indicator does not go off. (No DTC)19-43't1
oN*Wheel sensor {open/short to body ground/short topower)oooo
FR
19-45
13FL't5RR
17RL
12
oN*Wheel sensor/Pulser (chipped pulser gearlelectrical
notse,ooo
FR
19-45
't4FL
RR
18RL
31
ONSolenoid (open/short to body ground/short topower/stuck)ooo
FR-IN
19-47
32FR-OUT
FL.IN
34FL-OUT
RB-IN
36RR-OUT
37RL-IN
38RL.OUT
ONMotor lockoo19-49
ONMotor stuck OFFoo19-49
53ONMotor stuck ONo19-49
54ONMain relay stuck OFFoooia_at
6lONlgnition voltage (low voltage/high voltage)oooo'19-54
81ONoooo19-55
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- With ths ignition switch ONllll, the ABS indicatol doesnot go ott.- Atte. driving, the ABS indica-lot comas on.- With the SCS service connec-tor connocted (s€€ page 19.381,DTGr 11 - 18 sre indbated.
Check the whcol sensor circuit:1. Disconnect the ABS controlunit 26P connector.2, Nleasure the resistancebetween the appropriate wheelsensor l0) and 1'l) circuit termi-nals {see table).
. Ropair op€n in th. {01 o. lll cir-cuit wire, oa short to the (01 cir-cuit wire in the lll circuit wirobetweon the ABS control unitand th. appropriate whasl sen-sot.. Roplace the rpp.opriatc whe6lSensor.
ls the resistance OK?
/Fronr:750 - r,050 o (20"C,68"F\
\Rear: 950 -'1,450 O (20"C, 68'F,
Chock lor a short 10 power in thewheel sensoa ciacuil:1. Reconnect the ABS control unit26P connector.2. Start the engine.3. Measure the voltage betlveenthe ABS control unit 26P con-nector appropriate wheel sen-sor (0) circuit terminal andbody ground (see table).
Ropair lhort to pow.r in the l0lot 11) circuit wiro between theABS control unit and the appro-priate whool sen6or.
ls there 4 V or more?
Check for a short to body groundin the whoal s.n3or cilcuit:1. Disconnect the ABS controlunit 26P connector.2. Check lor cont;nuity betweenthe ABS control unit 26P con-nector appropriate wheel sen-sor {0) circuit terminal andbody ground {se6 table).. Ropair short to body g.ound inth6 {01 or {1} circuit wirebotweon th6 ABS cont.ol unitand tho appropriato wheol son-aot.. Roplace tho appropriate wheelsensot.
DTC 11 - 18: Wheel Sensor
NOTE: The ABS indicator comes on only when the drive wheels are turning and signal disturbance is detected, Therefore, test-drive the car at a speed of 12 mph (20 km/h) or more after turning the ignition switch from OFF to ON l), and if the ABS indica-tor does not come on, the svstem is OK.
RLl (LT BLUI FRl IGRN/BLKI
Wire side of female terminals
NOTE: Judgement value for short
NO
NOTE:. Normalvoltage: Approx. 2 V.0 V: Replace the ABS control unit.. 4 V or more indicates a shon to power.
NO(cont'dl
ABS CONTNOL UNIT 26P CONNECTOR
RROIBLU/YEL}
RRT IGRN/YELI
FLO(BRN/WHTI
FLl IGFN/ORN}
DTCAppropriate Terminal
{0}srDE(1)S|DE
11, l2lRight-front)No.8: FnoNo.21: FR1
13, 14 (Left-front)No. 10rFLoNo. 23: FLl
15, 16 (RightreadNo.4: RRoNo.17: RR1
17, l8 (Lsft-rear)No.6: RLoNo.19: RL1
(To page 19-46)
19-45
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Troubleshooting
DTC 11 - 18: Wheel Sensor (cont'd)
Check for chipped pulser gear.
Rcplacs thc drive3haft or hubunh. (Chipped pulsor goar.l
DTC 11, 13, 15. 17: Replaco theABS control unit.OfC 12, 11, 16, 18: Th6 ABS con-trol unit may have dstected dg-n.l disturbsnc€.
19-46
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Modulator Unit
Removal/lnstallation
NOTE:
. Do not spill brake fluid on the vehicle; it may damage the painu if brake fluid does contact the paint, wash it off imme-
diately with water.
a Take care not to damage or deform the brake lines during removal and installation.
. To prevent the brakefluidfrom flowing, plug and coverthe hose ends and joints with a shop towel or equivalent mate-
rial,
Romoval
1. Disconnect the modulator unit and Dump motor connectors.
2. Disconnect the brake lines, then remove the modulator unit.
lnstallation
1. Install the modu lator u nit. then con nect the brake lines. Tighten the flare nuts to 15 N.m ( 1.5 kgf.m, 1 1 lbf.ft).
2. Connect the modulator unit and oumo motor connectors.
3. Bleed the brake system, staning with the front wheels.
4. Start the engine, and check that the ABS indicator goes off.
5. Test-drive the vehicle, and check that the ABS indicator does not come on,
NOTE: This illustration shows the '97 - 98 models. The'99 - 00 models are similar.
PUMP MOTORCONNECTOR
MODULATON UNIT\*\
,@
I
TORX EOLT9.8 N,m (1.0 kgf.m.7.2lbf ftl
19-56
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ABS Control Unit
Pulsers/Wheel
Sensors
Replacement
Remove the passenger's side kick panel.
Disconnect the ABS control unit connectors.
Remove the ABS control unit.
Install the ABS control unit in the reverse order ofremovat.
ABS CONTROL UNIT
CONNECTORS
L
Inspection
1.Check the front and rear pulser for chipped or dam-
aged teeth.
Measure the air gap between the wheel sensor andpulser all the way around while rotating the pulser.
lf the gap exceeds 1.0 mm (0.04 in), check for a bentsusDension arm.
Standard: o.il - 1.0 mm 10.02 - 0.04 inl
Front/Rear
Remove the rear brake drum to insDect the rear wheolsensor air gap,
0.4 - 1.0 mm(0.02 - 0.04 inl
19-57
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Pulsers/Wheel Sensors
Wheel Sensor Replacement
NOTE;
. Be carefulwhen installing the sensors to avoid twisting the wires.
. The torque value of the bolts is 9.8 N.m ( 1.0 kgf.m, 7 Ibf.ft).
Front
6 mm BOLT9.8 N.m {1.0 kgtm. ?.2lbf'ft)
WHEEL SENSOR
Rgar
1. Remove the hub bearing unit (see section 18).
2. Remove the tour backing plate bolts.
3, Pull the backing plate away from the trailing arm, then remove the wheel sensor. lt is not necessary to disconnect the
brake line.
NOTE: This illustration shows the '97 - 98 models, The '99 - 00 models are similar.
6 mm BOLT9,8 N.m 11.0 kgf.m, 7.2lbf.ft)
\all
19-58
WHEEL SENSOR
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Body
Bumpers
Front Bumper Removal and
fnstaflation .........20-72
Rear Bumper Removal and
fnstaflation .........20-74
'Dashboard
lnstrument Panel Removal and
lnstallation .........20-47
Driver's Dashboard Lower Cover and
Knee Bolster Removal and
Installation .........20-48
Glove Box Removal and
lnstallation .........20-49
Center Pocket Removal and
lnstallation .........20-49
Center Dashboard Lower Cover
Removal and lnstallation ............ 20-50
Center Panel Removal and
lnstallation .........20-50
Power Window Switch Removal and
lnstallation .........20-51
Center Air Vent Removal and
lnstallation .........20-51
Side Air Vent Removal and
fnstallation .........20-52
Side Defogger Trim Removal and
fnstallation .........20-52
Dashboard Removal and
lnstallation .........20-53
Dashboard Frame Replacement ..... 20-55
Doors
Component Location Index
Front Door ,,...,,,,20-2
Rear Door ...........20-4
Tailgate Door ................................ 20-6
Fenderwell
Front Wheelwell Protector
Replacement .....20-89
Inner Fender Replacement .,.....,.,.... 20-89
Rear Wheelwell Protectol
Replacement .....20-90
Fuel Pipe Protector Replacement ... 20-90
Rear Air Outlet Replacement .......... 20-91
*Frame Repair Chart .............................. 20-106
Front Grille
Repf acement .........20-77
Glass
Component Location Index ............ 20-29
Hood
Replacement ......,,,20-75
Adjustment ............20-76
*lnterior Trim
Component Location Index ............ 20-40
Mirrors
Component Location Index .........,,, 20-26
Moldings
Roof Molding Replacement ............ 20-84
Door Moldings Replacement .......... 20-85
Openers
Component Location Index ............ 20-92
Rear Hatch Glass
Replacement .........20-74
Disassembly and Reassembly ........ 20-79
Adiustment ............20-81
Rear Weatherstrip Replacement .... 20-83
Seats
Component Location Index ............ 20-56
Side Sill Panel
Repfacement .........20-87
Spare Tire Cover
Emblem Installation ........................ 20-88
Sub-frame ..................20-104
Wiper/Washer
Component Location lndex ,,,,,....... 20-97
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