1998 ACURA INTEGRA wheel

Terminal
numbel
Wire
color
Terminalsign
lTerminal
name,
Description
Measurement
T€rminalConditions(lgnition switch ON {ll}}Vohage
BLKMHTGND4(Ground 4)
G round12-GNDBelow 0.3 V
14BRN(Service
check signal)
Detects service check con-
nector signal (DTC indica-
tion or DTC erasure)
I4-GNDSCS short
connector
ConnectedBelow 0.3 V
DisconnectedApprox. 5 V
16BRNfYELMCK(Motor check)
Detects pump motor drive
srg nal16-GNDPump motorONBattery voltage
OFFBelow 0.3 V
17LT BLU
RLW (+)
{Rear-left
wheel positive)
Detects left-rear wheel sen-
sor signal
17-18
q,
3
Turn wheel at
l turn/second
AC:
0.053 V or
above
oscilloscope:
0.15 Vp-p or
aoove
18GRY
RLW (_)
(Rear-left
wheel negative)
19GRNIVEL
RRW (+)
(Rearright
wheel positive)
Detects right-rear wheel
sensor srgnal
19-20
20BLU//EL
RRW (-)
(Rear-right
wheel negative)Stops0.25 - 1.15 V
21YEUGRNFSR
{Fail-safe relay)
Drives failsafe relay
(Fail-safe relay is turned
OFF to shut off the power
source to the solenoid and
pump motor relay when
problem occurs.)
21-GNDABS indicator
ONBelow 0.3 V
OFFApprox. 11V
LT BLU
DLC(Data link
connectorl
Communicates with Honda
PGM Tester22-GND
19-33

Troubleshooting Precautions
ABS lndicator
1. lf the system is OK. the ABS indicator goes off two seconds after turning the ignition switch ON (ll) without starting
the engine, and then comes on again and goes off after two seconds. This occurs because the ABS control unit is
turned on bv the lG2 oower source.
2. The ABS indicator comes on when the ABS control unit detects a problem in the system. However, even though the
system is operating properly, the ABS indicator will come on under the following conditions.. Onlv drive wheels rotate
. One drive wheel is stuck
. Vehicle spin
. ABS continues to operate for a long time
. Signal disturbance
To determine the actual cause of problem. question the customer about the problem, taking these conditions into
consideration.
3. When a problem is detected and the ABS indicator comes on, there are cases when the indicator stays on until the
ignition switch is turned OFF, and cases when the indicator goes off automatically when the system returns to nor-
mal. For DTCS 61 and 62, the indicator goes off automatically when the system returns normal. For all other codes.
the indicator stays on until the ignition switch is turned OFF.
4. For DTCS 12, 14, 16, '18, 2'1,22, 23, 24,51,52 and 53, the indicator goes off when the vehicle is driven again and the
system is OK after the ignition switch is turned from OFF to ON (ll). However, if the DTC is erased, the CPU is reset
and the indicator goes off right after the engine is started if the system is OK.
Diagnostic Trouble Code (DTC)
1. lf the CPU cannot be actlvated and the indicator comes on, the DTC is not memorized.
2. The memory can hold any number of DTCS. However, when the same DTC is detected more than once, the later one
is written over the old one. Therefore, when the same problem is detected repeatedly, it is memorized 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 memory). Therefore, the memorized DTCS cannot be canceled
by disconnecting the battery. Perform the specified procedures to erase the DTCS,
S6lt-dirgnosis
1. Self-diagnosis can be classifield into two categories.
. Initial diagnosis: Performed right afterthe enginestansand untiltheABS indicator goes off.. Regular diagnosis: Performed rightafterthe initial diagnosis untilthe ignition switch isturned OFF.
2. When a problem is detected by self-diagnosis, the system
. Turns the fail-safe relay OFF
. Turns the solenoid valve OFF
. Turns the oumo motor OFF
. Turns the ABS indicator ON

Troubleshooting Precautions
Kickback
L 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.
Pump Motol
1. The pump motor operates when the ABS is functioning.
2. The ABS control unit checks the pump motor operation during initial diagnosis and when the vehicle is started. You
mav hear the motor operate at this time, but it is normal
Brake Fluid Replacement/Air Bleeding'1. Brake fluid replacement and air bleeding procedures are the same as vehicles without ABS. To ease bleeding, start
with the front wheels.
Troubleshooting
1. The troubleshooting flowcharts procedures assume that the cause of the problem is still present and the ABS indica-
tor 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.
Find out when the ABS indjcator came on. such as during initial diagnosis. during ABS control, after ABS control,
when vehicle speed was at a certain speed, etc.
3, When the ABS indicator does not come on during the test-drive, but troubleshooting is performed based on the DTC,
check for loose connectors, poor contact at 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 illustrations show the female terminals with a single outline and the male terminals with a double outline.

DTC
E
F
o^
e=
DIAGNOSIS/SYMPTOM
DETECTIONTIMING
PROBIEMLOCAIION
REFERTOPAGE
Io-<1
E toEdqo=z
Y<
NODTC
OFFABS indicator does not come on.19-40
ONABS indicator does not go off.19-42
tl
ONWheel sensor (open/short to body ground/shon to power)o19-44t3FL
RR
17RL
12
ONWheel sensor (electrical noise/interminent interuption)o
FR
19-4514FL
16RR
18RL
ONPulsero
FR
19'4622
RR
24RL
ONSolenoid (short to body ground/shon to wire)oo
FR-IN
19-47
FR.OUT
33FL-IN
34FL-OUT
RR-IN
RR-OUT
37RL.IN
38RL-OUT
41
ONWheel locko19-5042FL
43RR
44RL
ONMotor locko19-51
52ONMotor stuck OFFo19-52
53ONMotor stuck ONoo19-55
54ONFailsafe relayo19-57
61ONlgnition voltageo19-59
71ONDifferent diameter tireo19-60
81ONCentral Processing Unit (CPU)oo19-60
Troubleshooting Index
19-39

- With the ignition switch ON(lll, the ABS indicator doesnot go off.- With the SCS s€.vice connec-tor connected lsee page 19-37), OTCS 11, 13, 15, 17 areindicated.
Check for a short to pow6r in thewheel sensor circuii:1. Disconnect the ABS controlu nit 22P connector.2. Start the engine.3, Measure the voltage betweenthe appropriate wheel sensor(+) circlit terminal and bodyground (see table).
Repair short to power in the {+)circuit wire between the ABScontrol unil and the approprialewheel sensor.
ls there 2 V or more?
Check for a short to body groundin th6 wheel sensor circuil:Check tor continuity between theappropriate wheel sensor (+) cir-cuit terminal and body ground(see table).. Ropair short lo body ground inthe {+) or {-l circuit wirebetween tho ABS contlol unitand th6 .ppropriate whe€l sen-
. Roplaco the .ppropliate wheelsensot.
ls there continuity?
Check for an open in the wheelsensor circuit:Check the resistance between theappropriate wheel sensor (+) and1-) circuit terminals (see table).
Ropair open in the {+) or (-} cir-cuit wire, or 3hort to the l+) cir-cuit wire in the l-l circuit wirebetween tho ABS control unitand th6 appropriate whgel 3en-
Replace th6 appropdate wh€elsensot.
ls the resistance OK?FronvRear: 450 - 2,050 O/20"c (68.F)
NOTE: lf you do not erase the DTC, the ABS indicator will not go off until vehicle speedexceeds 6 mph (10 km/h).
ABS CONTNOL UNIT 22P CONNECTOF
FLw {+l {GRN/ORN) FRw {+} (GRN/BLKI
oTcAppropriate Terminal
(+)Side( )side
11 (Right-front)No. 9: FRW (+)No. 8: FBW {-)
13 (Left'front)No.7: FLW (+)No.6: FLW 1-)
l5lBight-rear) iNo. 19:RRW (+!o. 20: RBW (-
17 (Left'r€af)17: RLW {+',1o. 18: RLW (-Wire side of lemale terminals
FLW (+) (GRN/ORN) FRW l+){GRN/BLK)
FLw l+l (GRN/ORNI FRW {-) {GRN}
FLW t-l(+l (GRN/BLKI
RL(-I {BLU/YELI
RLW l-) (GBY) RRW (+) (GRN/YEL)
Check for loose ABS control unitconnectors. lf necessary. substi-tute a known-good ABS controlunii and recheck.
RLW {+l (LT BLUI
RLw (+l {LT BLU}
-t(o
___r
l'!*
6l89l01t
1417t8t920
| ***-t
(()
Y
Troubleshooting
DTC 1 1, 13, 15, 17 : Wheel Sensor (open/short to body ground/short to power)
\
L
9-44
\

l
DTC121416, 18: Wheel Sensor {Electrical Noise/lntermittent lnterruptionl
- Wilh the ignition switch ONlll), the ABS indicator doesnot go off.- With the SCS service connec-tor connectcd (3e6 page 19-37), DTCa 12, 14, 16, or 18.reindicated.
Visually check for appropriatewheel sensor and pulser installation (see table).
Reinstall or replace th6 eppropri-ats wh6el sensor or puber.
Ch€ck lor a short to wire in thoone wheel s6nsor circuit:1. Disconnect the ABS controlunit 22P connector.2. Measu re the resistancebetween the appropriatewheel sensor (+) and (-) circuit terminals (see table).
Repair short to wire between theappropriate wheel sensor {+) and{-l circuits.ls there less than 450 0?
Check lor a short to .nother wirein lhe wheel sensor circuits:Check for continuity between theappropriate wheel sensor (+) circuit terminal and other wheelsensor (+i circuit terminals (see
table)-
R€psir short to wire between theappropriale wheol sensor andthe other wheel sensor.ls there continuity?
Eraso the DTC and test-drive thevehicle. lf ABS indicator comeson and same OTC is indiceted,reDlace the ABS control unil.
NOTE: ll the ABS indicator comes on for the reasons described below, the indicator should go
off when you test'drive the vehicle at speeds above 19 mph 130 km/h).. Only the drive wheels rotated. The vehicle spun. Electrical noise
DTCAppropriate Wheel Sensor
12Right - front
14Left front
Right - rear
18Left rear
DTCAppropriate Terminal
{+}Side(-)Side
12 (Right-front)No. 9: FRW (+)No.8: FRW (-)
'14 {Left-front)No. 7: FLW {+)No.6: FLW (-)'16 {Right-rear)No. 19: RRW 1+)No.20: RRW ( )
18 (Left-rear)No. 17: RLW (+)No. 18: RLW ( )
DTCAppropriateTerminalOther Terminal
12 (Right-tront)No.9: FBW (+)No. 7: FLW 1+)No. 19: RRW (+)No. 17: RLW (+)
14 (Left-front)No.7: FLW (+)No.9i FRW (+)No. 19: RRW (+)No. 17: RLW (+)
16 (Right-rear)No. 19r RRW {+)No.9: FRW (+)No. 7: FLW 1+)No.17: RLW (+)'18 (Left-rear)No. 17: RLW (+)No.9: FRW (+)No.7; FLW (+iNo. 19: RRW (+i
'
L
19-45

- while driving and dcprc$ingtho brakc oodrl, the ABS indi-catot com63 0n.- With the SCS service connac-tor connoctod lsoa page 19-371, DTCa 41 - a4 ar6 indicri-oo,
Do the brakos drag?
Check the installation of theappropriate wheel sensor instal-lation (see table).
. Th6 orobablo cau3o was thevehicle spun during cornaring..lf the problem occurs agcin,chock th6 modulator u.ing thoHonda PGM Tertar.
DTCAppropriate Wheel Sensor
41Right-front
42Left-front
4:]Right-rear
44Leii-rear
Troubleshooting
DTC 41 - 44: WheelLock
19-50

Modulator Unit
Removal/lnstallation
CAUTION:
. Do not spill brake fluid on lhe vehicle; it may damage the paint; il brake fluid does contact the paint, wash it offimmediately with water.
. Tak€ care notto damage or delorm the brake lines during removal and installation.. To provont the brake fluid ftom flowing, plug and cover the hos€ ends and ioints with a shop towel or equiyalent material.
Removal
1. Disconnect the modulator unit and DUmD motor connectors.
2. Disconnect the brake lines, then remove the modulator unit.
Installation
1. lnstall the modulator unit, then connect the brake lines. Tighten the flare nuts to 15 N.m (1.5 kgf.m, 11 lbf.ft).2. Connect the modulator unit and pump motor connectors.
3. Bleed the brake system, starting 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.
From master cylinder
from master cylinderprimary side
PUMP MOTOB CONNECTOR
MOUNT
UNlT
MODULATOR UNIT CONNECTOR
toright front
8 mm EOLT22 N.m {2.2 kg[.m, 16 lbl.ftl
6 mm NUT9.8 N.m 11.0 ks{.m,7.2lbtftl
9-6