Page 321 of 3051
NOTE:
Stopping distance may be longer than vehicles without ABS when
road condition is slippery.
4. ABS Does Not WorkNLBR0107
1 CHECK WARNING LAMP INDICATION
Does the ABS warning lamp activate?
Ye s©Carry out self-diagnosis. Refer to BR-56, BR-58.
No©Go to“3. CHECK WARNING LAMP INDICATION”in“2. Unexpected Pedal Action”,
BR-82.
NOTE:
ABS does not work when vehicle speed is under 10 km/h (6 MPH).
TROUBLE DIAGNOSES FOR SYMPTOMSABS
4. ABS Does Not Work
BR-84
Page 322 of 3051

5. Pedal Vibration and Noise=NLBR0108
1 INSPECTION START
Pedal vibration and noise inspection
SAT797A
©GO TO 2.
2 CHECK SYMPTOM
1. Apply brake.
2. Start engine.
Does the symptom appear only when engine is started?
Ye s©Carry out self-diagnosis. Refer to BR-56, BR-58.
No©GO TO 3.
3 RECHECK SYMPTOM
Does the symptom appear when electrical equipment switches (such as headlamp) are operated?
Ye s©GO TO 4.
No©Go to“3. CHECK WARNING LAMP INDICATION”in“2. Unexpected Pedal Action”,
BR-82.
4 CHECK WHEEL SENSOR
Check wheel sensor shield ground. For location of shield ground, refer to wiring diagram and“HARNESS LAYOUT”in EL
section.
Is wheel sensor shield grounded properly?
Ye s©Check ABS actuator and electric unit pin terminals for damage or the connection of ABS
actuator and electric unit harness connector. Reconnect ABS actuator and electric unit
harness connector. Then retest.
No©Repair.
NOTE:
ABS may operate and cause vibration under any of the following
conditions.
+Applying brake gradually when shifting or operating clutch.
+Low friction (slippery) road.
+High speed cornering.
+Driving over bumps and pot holes.
+Engine speed is over 5,000 rpm with vehicle stopped.
TROUBLE DIAGNOSES FOR SYMPTOMSABS
5. Pedal Vibration and Noise
BR-85
Page 323 of 3051
6. ABS Warning Lamp Does Not Come On
When Ignition Switch Is Turned On
=NLBR0109
1 INSPECTION START
Warning lamp circuit inspection
NBR379
©GO TO 2.
2 CHECK FUSE
Check 10A fuse No. 30 for warning lamp. For fuse layout, refer to“POWER SUPPLY ROUTING”in EL section.
Is fuse OK?
Ye s©GO TO 3.
No©Replace fuse.
3 CHECK ABS CONTROL UNIT POWER SUPPLY CIRCUIT
1. Install 10A fuse.
2. Disconnect ABS actuator and electric unit connector.
3. Check voltage between control unit connector terminal *1 and ground after turning ignition switch“ON”.
NBR380
Does battery voltage exist after turning ignition switch“ON”?
Ye s©GO TO 5.
No©GO TO 4.
TROUBLE DIAGNOSES FOR SYMPTOMSABS
6. ABS Warning Lamp Does Not Come On When Ignition Switch Is Turned On
BR-86
Page 324 of 3051
4 CHECK WARNING LAMP INDICATION
Disconnect ABS actuator and electric unit connector.
SBR759E
Does the ABS warning lamp activate?
Ye s©GO TO 6.
No©GO TO 5.
5 CHECK HARNESS FOR SHORT
1. Disconnect ABS actuator and electric unit connector.
2. Check voltage between ABS actuator and electric unit connector terminal *1 and ground.
NBR381
Does battery voltage exist?
Ye s©Check combination meter. Refer to WARNING LAMPS in EL section.
No©Repair harness and connectors between fuse and ABS actuator and electric unit connec-
tor terminal *1.
6 CHECK HARNESS CONNECTOR
Check ABS actuator and electric unit pin terminals for damage or connection of ABS actuator and electric unit harness
connector. Reconnect ABS actuator and electric unit harness connector. Then reset.
OK©INSPECTION END
NG©Replace ABS actuator and electric unit.
TROUBLE DIAGNOSES FOR SYMPTOMSABS
6. ABS Warning Lamp Does Not Come On When Ignition Switch Is Turned On (Cont’d)
BR-87
Page 325 of 3051
7. ABS Warning Lamp Stays On When Ignition
Switch Is Turned On
=NLBR0110
1 INSPECTION START
ABS control unit inspection
NBR382
©GO TO 2.
2 CHECK WARNING LAMP
1. Disconnect ABS actuator and electric unit connector.
2. Connect suitable wire between ABS actuator and electric unit connector terminal *1 and ground.
NBR383
Does warning lamp activate?
Ye s©GO TO 3.
No©Repair combination meter. Check the following.
+Harness connector E1
+Harness for open or short between ABS actuator and electric unit and fuse
If NG, repair harness or connector.
3 CHECK HARNESS CONNECTOR
Check ABS actuator and electric unit pin terminals for damage or the connection of ABS actuator and electric unit harness
connector. Reconnect ABS actuator and electric unit harness connector. Then retest.
OK©INSPECTION END
NG©GO TO 4.
TROUBLE DIAGNOSES FOR SYMPTOMSABS
7. ABS Warning Lamp Stays On When Ignition Switch Is Turned On
BR-88
Page 326 of 3051
4 CHECK ABS MOTOR GROUND
1. Turn ignition switch“OFF”.
2. Disconnect ABS actuator and electric unit connector.
3. Check continuity between ABS actuator and electric unit connector terminal 16 and ground.
SBR147EC
Does continuity exist?
Ye s©Replace ABS actuator and electric unit.
No©Check the following.
+Harness connector E1
+Harness for open or short between ABS actuator and electric unit and ground
If NG, repair harness or connector.
TROUBLE DIAGNOSES FOR SYMPTOMSABS
7. ABS Warning Lamp Stays On When Ignition Switch Is Turned On (Cont’d)
BR-89
Page 327 of 3051
NLBR0111
CAUTION:
Be careful not to damage sensor edge and sensor rotor teeth.
When removing the front or rear wheel hub assembly, first
remove the ABS wheel sensor from the assembly. Failure to
do so may result in damage to the sensor wires making the
sensor inoperative.
Wheel SensorsNLBR0111S01
SBR902D
REMOVAL AND INSTALLATIONABS
BR-90
Page 328 of 3051
ABS Actuator and Electric UnitNLBR0111S10
SBR630E
REMOVALNLBR0111S10011. Disconnect battery cable.
2. Drain brake fluid.
3. Remove mounting bracket fixing bolts and nuts.
4. Disconnect connector, brake pipes and remove fixing nuts.
INSTALLATIONNLBR0111S1002CAUTION:
After installation, refill brake fluid. Then bleed air.
1. Connect brake pipes temporarily.
2. Tighten fixing bolts and nuts.
3. Tighten brake pipes.
4. Connect connector and battery cable.
REMOVAL AND INSTALLATIONABS
ABS Actuator and Electric Unit
BR-91