ABS NISSAN ALMERA 2001 Workshop Manual

6 CHECK WHEEL BEARING
Check wheel bearing axial end play.
Check clearance between sensor and rotor.
Clearance:
Front
0.7 - 1.8 mm (0.028 - 0.071 in)
Rear
0.4 - 1.5 mm (0.016 - 0.059 in)
SBR333E
SBR069CA
Is axial end play and clearance within specifications?
Ye s©GO TO 7.
No©Clean sensor fixing portion, or replace sensor.
7 CHECK SENSOR ROTOR
Check sensor rotor for teeth damage.
Is sensor rotor free from damage?
Ye s©Check control unit pin terminals for damage or the connection of control unit harness
connector. Reconnect control unit harness connector. Then retest.
No©Replace sensor rotor.
TROUBLE DIAGNOSES FOR SELF-DIAGNOSTIC ITEMSABS
Wheel Sensor or Rotor (Cont'd)
BR-80

ABS Actuator Solenoid Valve or Solenoid Valve
Relay
=NJBR0100DIAGNOSTIC PROCEDURENJBR0100S01(Malfunction code No. 41, 45, 55, 42, 46, 56, 63, 51, 52 for
models with self-diagnosis function)
1 INSPECTION START
Solenoid valve relay inspection
SBR761E
©GO TO 2.
2 CHECK SOLENOID VALVE POWER SUPPLY CIRCUIT
Check 40A [c] fusible link (ABS ACTR) for ABS solenoid valve relay. For fusible link layout, refer to POWER SUPPLY
ROUTING in EL section.
Is fusible link OK?
Ye s©GO TO 3.
No©GO TO 7.
3 CHECK FUSE
Check 10A fuse No. 31. For fuse layout, refer to ªPOWER SUPPLY ROUTINGº in EL section.
Is fuse OK?
Ye s©GO TO 4.
No©GO TO 9.
TROUBLE DIAGNOSES FOR SELF-DIAGNOSTIC ITEMSABS
ABS Actuator Solenoid Valve or Solenoid Valve Relay
BR-81

4 CHECK CONNECTOR
1. Disconnect ABS actuator and electric unit connector. Check terminals for damage or loose connection. Then reconnect
connector.
2. Carry out self-diagnosis again.
Does warning lamp activate again?
Ye s©GO TO 5.
No©INSPECTION END
5 CHECK GROUND CIRCUIT
Refer to ABS ACTUATOR AND ELECTRIC UNIT in Ground Circuit Check, BR-75.
Is ground circuit OK?
Ye s©GO TO 6.
No©Repair harness and connectors.
6 CHECK SOLENOID VALVE POWER SUPPLY CIRCUIT
1. Disconnect ABS actuator and electric unit connector.
2. Check voltage between ABS actuator and electric unit connector terminal 18 and ground.
SBR052EF
Does battery voltage 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 fusible link
If NG, repair harness or connectors.
7 REPLACE FUSIBLE LINK
Replace fusible link.
Does the fusible link blow out when ignition switch is turned ªONº?
Ye s©GO TO 8.
No©INSPECTION END
TROUBLE DIAGNOSES FOR SELF-DIAGNOSTIC ITEMSABS
ABS Actuator Solenoid Valve or Solenoid Valve Relay (Cont'd)
BR-82

8 CHECK RELAY UNIT POWER SUPPLY CIRCUIT
1. Disconnect ABS actuator and electric unit connector.
2. Check continuity between ABS actuator and electric unit connector terminal 18 and ground.
SBR052EF
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 fusible link
If NG, repair harness or connectors.
9 REPLACE FUSE
Replace fuse.
Does the fuse blow out when ignition switch is turned ªONº?
Ye s©Check the following.
+Harness connector E1
+Harness for open or short between ABS actuator and electric unit and fuse
If NG, repair harness or connectors.
No©INSPECTION END
TROUBLE DIAGNOSES FOR SELF-DIAGNOSTIC ITEMSABS
ABS Actuator Solenoid Valve or Solenoid Valve Relay (Cont'd)
BR-83

Motor Relay or Motor=NJBR0101DIAGNOSTIC PROCEDURENJBR0101S01(Malfunction code No. 61 for models with self-diagnosis func-
tion)
1 INSPECTION START
ABS motor relay inspection
SBR760E
©GO TO 2.
2 CHECK MOTOR POWER SUPPLY CIRCUIT
Check 40A [F] fusible link (ABS MTR) for ABS motor relay. For fusible link layout, refer to POWER SUPPLY ROUTING in
EL section.
Is fusible link OK?
Ye s©GO TO 3.
No©GO TO 6.
3 CHECK CONNECTOR
1. Disconnect ABS actuator and electric unit connector. Check terminals for damage or loose connection. Then reconnect
connectors.
2. Carry out self-diagnosis again.
Does warning lamp activate again?
Ye s©GO TO 4.
No©INSPECTION END
TROUBLE DIAGNOSES FOR SELF-DIAGNOSTIC ITEMSABS
Motor Relay or Motor
BR-84

4 CHECK MOTOR RELAY POWER SUPPLY CIRCUIT
1. Disconnect ABS actuator and electric unit connector.
2. Check voltage between ABS actuator and electric unit connector terminal 17 and ground.
SBR055EF
Does battery voltage exist?
Ye s©GO TO 5.
No©Check the following.
+Harness connector E1
+Harness for open or short between ABS actuator and electric unit and fusible link
If NG, repair harness or connectors.
5 CHECK ABS ACTUATOR AND ELECTRIC UNIT GROUND CIRCUIT
Refer to ABS ACTUATOR AND ELECTRIC UNIT GROUND in Ground Circuit Check, BR-75.
Is ground circuit OK?
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 connectors.
6 REPLACE FUSIBLE LINK
Replace fusible link.
Does the fusible link blow out when ignition switch is turned ªONº?
Ye s©GO TO 7.
No©INSPECTION END
TROUBLE DIAGNOSES FOR SELF-DIAGNOSTIC ITEMSABS
Motor Relay or Motor (Cont'd)
BR-85

7 CHECK ABS ACTUATOR MOTOR POWER SUPPLY CIRCUIT
1. Disconnect battery cable and ABS actuator and electric unit connector.
2. Check continuity between ABS actuator and electric unit connector terminal 17 and ground.
SBR055EF
Does continuity exist?
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©Check the following.
+Harness connector E1
+Harness for open or short between ABS actuator and electric unit and fusible link
If NG, repair harness or connectors.
Low VoltageNJBR0102DIAGNOSTIC PROCEDURENJBR0102S01(Malfunction code No. 57 for models with self-diagnosis func-
tion)
1 INSPECTION START
ABS actuator and electric unit power supply and ground circuit inspection
SBR625E
©GO TO 2.
TROUBLE DIAGNOSES FOR SELF-DIAGNOSTIC ITEMSABS
Motor Relay or Motor (Cont'd)
BR-86

2 CHECK CONNECTOR
1. Disconnect ABS actuator and electric unit connector. Check terminals for damage or loose connections. Then recon-
nect connector.
2. Carry out self-diagnosis again.
Does warning lamp activate again?
Ye s©GO TO 3.
No©INSPECTION END
3 CHECK ABS ACTUATOR AND ELECTRIC UNIT POWER SUPPLY CIRCUIT
1. Disconnect ABS actuator and electric unit connector.
2. Check voltage between ABS actuator and electric unit connector terminal 15 and ground.
SBR058EH
Does battery voltage exist when ignition switch is turned ON?
Ye s©GO TO 4.
No©GO TO 5.
4 CHECK ABS ACTUATOR AND ELECTRIC UNIT GROUND
Refer to ABS ACTUATOR AND ELECTRIC UNIT GROUND in Ground Circuit Check, BR-75.
Is ground circuit OK?
OK©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.
NG©Check the following.
+Harness connector E1
+Harness for open or short between ABS actuator and electric unit and ground
If NG, repair harness or connectors.
5 CHECK FUSE
Check 10A fuse 31 (Engine control) for control unit. Refer to POWER SUPPLY ROUTING in EL section.
Is fuse OK?
Ye s©GO TO 6.
No©Replace fuse.
TROUBLE DIAGNOSES FOR SELF-DIAGNOSTIC ITEMSABS
Low Voltage (Cont'd)
BR-87

6 CHECK ABS ACTUATOR AND ELECTRIC UNIT POWER SUPPLY CIRCUIT
Check continuity between battery and ABS actuator and electric unit connector terminal 15.
Does continuity exist?
Ye s©Check battery. Refer to BATTERY in EL section.
No©Check the following.
+Harness connector E1
+Harness for open or short between ABS actuator and electric unit and fuse
If NG, repair harness or connectors.
Control UnitNJBR0103DIAGNOSTIC PROCEDURENJBR0103S01(Malfunction code No. 71 for models with self-diagnosis func-
tion)
1 INSPECTION START
ABS actuator and electric unit power supply and ground circuit inspection
SBR626E
©GO TO 2.
2 CHECK CONNECTOR
1. Disconnect ABS actuator and electric unit connector.
Check terminals for damage or loose connections and replace. Then reconnect connector.
2. Carry out self-diagnosis again.
Does warning lamp activate again?
Ye s©GO TO 3.
No©INSPECTION END
3 CHECK ABS ACTUATOR AND ELECTRIC UNIT POWER SUPPLY CIRCUIT
Check voltage. Refer to ª3. CHECK ABS ACTUATOR AND ELECTRIC UNIT POWER SUPPLY CIRCUITº in ªLow Voltageº,
BR-86.
Does battery voltage exist when ignition switch is turned ON?
Ye s©GO TO 4.
No©Repair.
4 CHECK WARNING LAMP INDICATION
Does warning lamp indicate code No. 71 again?
Ye s©Replace ABS actuator and electric unit.
No©Inspect the system according to the code No.
TROUBLE DIAGNOSES FOR SELF-DIAGNOSTIC ITEMSABS
Low Voltage (Cont'd)
BR-88

1. ABS Works FrequentlyNJBR0104
1 CHECK BRAKE FLUID PRESSURE
Check brake fluid pressure distribution.
Is brake fluid pressure distribution normal?
Ye s©GO TO 2.
No©Perform Preliminary Check. Refer to BR-72.
2 CHECK WHEEL SENSOR
1. Check wheel sensor connector for terminal damage or loose connections.
2. Perform wheel sensor mechanical check.
Refer to ªWheel Sensor or Rotorº, BR-78.
Are wheel sensors functioning properly?
Ye s©GO TO 3.
No©Repair.
3 CHECK FRONT AXLE
Check front and rear axles for excessive looseness. Refer to AX section, ªFront Wheel Bearingº, ªON-VEHICLE SERVICEº
and ªRear Wheel Bearingº, ªON-VEHICLE SERVICEº.
Is front axle installed properly?
Ye s©Go to ª3. CHECK WARNING LAMP INDICATIONº in ª2. Unexpected Pedal Actionº,
BR-89.
No©Repair.
2. Unexpected Pedal ActionNJBR0105
1 CHECK BRAKE PEDAL STROKE
Check brake pedal stroke. Is stroke excessively large?
SBR540A
Ye s©Perform Preliminary Check. Refer to BR-72.
No©GO TO 2.
TROUBLE DIAGNOSES FOR SYMPTOMSABS
1. ABS Works Frequently
BR-89