Page 176 of 2267

SENSOR ROTOR
Removal
1. Remove the drive shaft and rear wheel hub. Refer to FA, RA
section (ªDrive Shaftº, FRONT AXLEº and ªWheel Hubº,
REAR AXLEº).
2. Remove the sensor rotor using suitable puller, drift and bear-
ing replacer.
Installation
Install the sensor rotor. For front sensor rotor, use hammer and
wooden block. For rear sensor rotor, use suitable drift and press.
lAlways replace sensor rotor with new one.
lEnsure sensor rotor is completely flush with surface indicated
on drive shaft.
lPay attention to the flush position of rear sensor rotor as
shown in figure.
h: þ0.3 to +0.3 mm (þ0.012 to +0.012 in)
CONTROL UNIT
Location: Built-in ABS actuator.
When disconnecting the harness connector, pull the lever
as shown figure.
SBR984C Front sensor rotor
Drive shaft
SBR873CA Rear sensor rotor
Suitable drift
NBR196 Front sensor rotor
Wooden
block Flush
.NBR197 Rear sensor rotorPress
Suit-
able
drift
Sensor
rotor
Wheel hub h
NBR261 ABS control unit
harness connector
ABS control unitABS actuator
X
1
X PULL
ANTI-LOCK BRAKE SYSTEM
Removal and Installation (Cont'd)
BR-54
Page 177 of 2267
ABS ACTUATOR
NBR262 Front master cylinder secondary
To rear wheel cylinder (LH)
To rear wheel cylinder (RH)
Actuator/ground cable
10.8 - 14.7
(1.1 - 1.5,8.0 - 10.8)
: N´m (kg-m, in-lb)
: N´m (kg-m, ft-lb) Actuator bracket7-9
(0.7 - 0.9, 5.1 - 6.5) ABS actuator & electric control
unit
11 - 15 (1.1 - 1.5, 8.0 -10.8)To front wheel cylinder (RH)
To front wheel cylinder (LH)
From master cylinder primary
10 - 14 (1.0 - 1.4, 7.2 - 10.1)
FRONT LockUnlock
ANTI-LOCK BRAKE SYSTEM
Removal and Installation (Cont'd)
BR-55
Page 182 of 2267
Component Parts and Harness Connector
Location
NBR285
Brake tube connectorWarning light
ABS actuator
and electric unit
Front wheel sensors
Front left wheel sensor connector
Front right wheel sensor connector
Sensor
E17
Rear wheel sensors
Rear left wheel sensor connector
Rear right wheel sensor connector
B33Rear left wheel
sensor connector
B32Rear right wheel
sensor connector.Rear tire
.E78
E57
Sensor
TROUBLE DIAGNOSES
BR-60
Page 191 of 2267
CONSULT-II
CONSULT-II APPLICATION TO ABS
ITEMSELF-DIAGNOSTIC
RESULTSDATA MONITOR ACTIVE TEST
Front right wheel sensor X X Ð
Front left wheel sensor X X Ð
Rear right wheel sensor X X Ð
Rear left wheel sensor X X Ð
Stop lamp switch Ð X Ð
Front right inlet solenoid valve X X X
Front right outlet solenoid valve X X X
Front left inlet solenoid valve X X X
Front left outlet solenoid valve X X X
Rear right inlet solenoid valve X X X
Rear left inlet solenoid valve X X X
Rear right outlet solenoid valve X X X
Rear left outlet solenoid valve X X X
Actuator solenoid valve relay X X Ð
Actuator motor relay
(ABS MOTOR is shown on the Data Monitor screen.)XXX
ABS warning lamp Ð X Ð
Battery voltage X X Ð
Control unit X Ð Ð
X: Applicable
Ð: Not applicable
ECU part number mode
Ignore the ECU part number displayed in the ECU PART NUMBER MODE. Refer to parts catalog to order
the ECU.
Trouble Diagnosis Ð General Description
BR-69
Page 193 of 2267
![NISSAN PRIMERA 1999 Electronic Repair Manual SELF-DIAGNOSTIC RESULTS MODE
Diagnostic item Diagnostic item is detected when...Diagnostic
procedure
FR RH SENSORH
[OPEN]
lCircuit for front right wheel sensor is open.
(An abnormally high input volta NISSAN PRIMERA 1999 Electronic Repair Manual SELF-DIAGNOSTIC RESULTS MODE
Diagnostic item Diagnostic item is detected when...Diagnostic
procedure
FR RH SENSORH
[OPEN]
lCircuit for front right wheel sensor is open.
(An abnormally high input volta](/manual-img/5/57377/w960_57377-192.png)
SELF-DIAGNOSTIC RESULTS MODE
Diagnostic item Diagnostic item is detected when...Diagnostic
procedure
FR RH SENSORH
[OPEN]
lCircuit for front right wheel sensor is open.
(An abnormally high input voltage is entered.)1
FR LH SENSORH
[OPEN]
lCircuit for front left wheel sensor is open.
(An abnormally high input voltage is entered.)1
RR RH SENSORH
[OPEN]
lCircuit for rear right sensor is open.
(An abnormally high input voltage is entered.)1
RR LH SENSORH
[OPEN]
lCircuit for rear left sensor is open.
(An abnormally high input voltage is entered.)1
FR RH SENSORH
[SHORT]
lCircuit for front right wheel sensor is shorted.
(An abnormally low input voltage is entered.)1
FR LH SENSORH
[SHORT]
lCircuit for front left wheel sensor is shorted.
(An abnormally low input voltage is entered.)1
RR RH SENSORH
[SHORT]
lCircuit for rear right sensor is shorted.
(An abnormally low input voltage is entered.)1
RR LH SENSOR
[SHORT]
lCircuit for rear left sensor is shorted.
(An abnormally low input voltage is entered.)1
ABS SENSORH
[ABNORMAL SIGNAL]
lTeeth damage on sensor rotor or improper installation of wheel sensor.
(Abnormal wheel sensor signal is entered.)1
FR RH IN ABS SOL
[OPEN]
lCircuit for front right inlet solenoid valve is open.
(An abnormally low output voltage is entered.)2
FR LH IN ABS SOL
[OPEN]
lCircuit for front left inlet solenoid valve is open.
(An abnormally low output voltage is entered.)2
RR RH IN ABS SOL
[OPEN]
lCircuit for rear right inlet solenoid valve is open.
(An abnormally low output voltage is entered.)2
RR LH IN ABS SOL
[OPEN]
lCircuit for rear left inlet solenoid valve is open.
(An abnormally low output voltage is entered.)2
FR RH IN ABS SOL
[SHORT]
lCircuit for front right inlet solenoid valve is shorted.
(An abnormally high output voltage is entered.)2
FR LH IN ABS SOL
[SHORT]
lCircuit for front left inlet solenoid valve is shorted.
(An abnormally high output voltage is entered.)2
RR RH IN ABS SOL
[SHORT]
lCircuit for rear right inlet solenoid valve is shorted.
(An abnormally high output voltage is entered.)2
RR LH IN ABS SOL
[SHORT]
lCircuit for rear left inlet solenoid valve is shorted.
(An abnormally high output voltage is entered.)2
FR RH OUT ABS SOL
[OPEN]
lCircuit for front right outlet solenoid valve is open.
(An abnormally low output voltage is entered.)2
FR LH OUT ABS SOL
[OPEN]
lCircuit for front left outlet solenoid valve is open.
(An abnormally low output voltage is entered.)2
RR RH OUT ABS SOL
[OPEN]
lCircuit for rear right outlet solenoid valve is open.
(An abnormally low output voltage is entered.)2
RR LH OUT ABS SOL
[OPEN]
lCircuit for rear left outlet solenoid valve is open.
(An abnormally low output voltage is entered.)2
FR RH OUT ABS SOL
[SHORT]
lCircuit for front right outlet solenoid valve is shorted.
(An abnormally high output voltage is entered.)2
FR LH OUT ABS SOL
[SHORT]
lCircuit for front left outlet solenoid valve is shorted.
(An abnormally high output voltage is entered.)2
RR RH OUT ABS SOL
[SHORT]
lCircuit for rear right outlet solenoid valve is shorted.
(An abnormally high output voltage is entered.)2
RR LH OUT ABS SOL
[SHORT]
lCircuit for rear left outlet solenoid valve is shorted.
(An abnormally high output voltage is entered.)2
ABS ACTUATOR RELAY
[ABNORMAL]
lActuator solenoid valve relay is ON, even control unit sends off signal.lActuator solenoid valve relay is OFF, even control unit sends on signal.2
ABS MOTOR RELAY
[ABNORMAL]
lCircuit for actuator motor is open or shorted.lActuator motor relay is stuck.lCircuit for actuator is open or shorted.3
BATTERY VOLT
[VB-LOW]
lPower source voltage supplied to ABS control unit is abnormally low. 4
CONTROL UNIT
lFunction of calculation in ABS control unit has failed. 5
H: If one or more wheels spin on a rough or slippery road for 40 seconds or more, the ABS warning lamp will illuminate. This does
not indicate a malfunction. Only in the case of the short-circuit after repair the ABS warning lamp also illuminates when the igni-
tion switch is turned ªONº. In this case, drive the vehicle at speeds greater than 30 km/h (19 MPH) for approximately 1 minute
as specified in ªSELF-DIAGNOSIS PROCEDUREº, BR-70. Check to ensure that the ABS warning lamp goes out while the
vehicle is being driven.
Trouble Diagnosis Ð General Description
CONSULT-II Inspection Procedure (Cont'd)
BR-71
Page 195 of 2267

DATA MONITOR MODE
MONITOR ITEM CONDITION SPECIFICATION
FR RH SENSOR
FR LH SENSOR
REAR RH SENSOR
REAR LH SENSORDrive vehicle.
(Each wheel is rotating.)Wheel speed signal
Almost the same speed as speedometer.
STOP LAMP SW Brake is depressed.Depress the pedal: ON
Release the pedal: OFF
FR RH IN SOL
FR RH OUT SOL
FR LH IN SOL
FR LH OUT SOL
RR RH IN SOL
RR RH OUT SOL
RR LH IN SOL
RR LH OUT SOL1. Drive vehicle at speeds
over 30 km/h (19 mph) for
at least one minute.
2. Engine is running.Operating conditions for each solenoid valve are indicated.
ABS is not operating: OFF
MOTOR RELAYABS is not operating: OFF
ABS is operating: ON
ACTUATOR RELAY
Ignition switch is set to the
ªONº position or engine is
running.Ignition switch in the ªONº position (Engine stops): OFF
Engine running: ON
WARNING LAMPWarning lamp is turned on: ON
Warning lamp is turned off: OFF
BATTERY VOLTPower supply voltage for control unit
Trouble Diagnosis Ð General Description
CONSULT-II Inspection Procedure (Cont'd)
BR-73
Page 199 of 2267

Diagnostic Procedure 1 (Wheel sensor or
rotor)
(Malfunction code No. 21, 22, 25, 26, 31, 32, 35, 36 or
18 for models with self-diagnosis function)
INSPECTION STARTS
1. Disconnect connectors from ABS
actuator and electric unit and wheel
sensor of malfunction code No.
Check terminals for damage or loose
connections. Then reconnect con-
nectors.
2. Carry out self-diagnosis again.
Does warning lamp activate
again?
Ye s
ENo
Inspection end
CHECK WHEEL SENSOR ELECTRI-
CAL.
1. Disconnect ABS actuator and electric
unit connector.
2. Check resistance between ABS
actuator and electric unit connector
E78(body side) terminals.
Code No. 21 or 22 (Front RH wheel)
Terminals
p11andp12
Code No. 25 or 26 (Front LH wheel)
Terminals
p9andp10
Code No. 31 or 32 (Rear RH wheel)
Terminals
p13andp15
Code No. 35 or 36 (Rear LH wheel)
Terminals
p7andp8
Resistance: Front 1.44 - 1.76 kW
Rear 1.44 - 1.76 kW
NG
EOKpA(Go to next page.)
CHECK WHEEL SENSOR.
Check each sensor for resistance.
Resistance: Front 1.44 - 1.76 kW
Rear 1.44 - 1.76 kW
NG
EOK
Check the following.
lHarness connectors
E78
lHarness for open or
short between wheel
sensor connectors and
ABS actuator and
electric unit
If NG, repair harness or
connectors.
REPLACE.
Replace wheel sensor.
NBR420 Front RH Front LH Rear RH Rear LH
ABS actuator and electric unit
Wheel sensor connectors (sensor side)
Front LH
Front RHRear LH
Rear RH
NBR414
ABS ACTUATOR AND
ELECTRIC UNIT CONNECTOR
YBR173
Front
sensorRear
sensor
H
H
H
TROUBLE DIAGNOSES FOR SELF-DIAGNOSTIC ITEMS
BR-77
Page 200 of 2267
pA
Note Note
CHECK TYRE.
Check for inflation pressure, wear and
size of each tyre.
OK
ENG
Adjust tyre pressure or
replace tyre(s).
Note
CHECK WHEEL BEARING
Check wheel bearing axial end play and
clearance between sensor and rotor.
Clearance
Front
0.1 - 1.1 mm (0.004 - 0.043 in)
Rear
0.536 - 1.551 mm (0.021 - 0.061 in)
OK
ENG
Clean sensor fixing
portion, or replace sensor.
Note Note
CHECK SENSOR ROTOR.
Check sensor rotor for teeth damage.
OK
ENG
Replace sensor rotor.
CHECK HARNESS CONNECTOR.
Check ABS actuator and electric unit pin
terminals for damage or the connection
of ABS actuator and electric unit har-
ness connector.
Reconnect ABS actuator and electric
unit harness connector. Then retest.
Note: Wheel position should be indentified by code num-
bers except code No. 18 (sensor rotor).
NBR391
Front sensorFeeler gauge
Sensor
Rotor
Sensor
Feeler gauge
H
H
H
H
TROUBLE DIAGNOSES FOR SELF-DIAGNOSTIC ITEMS
Diagnostic Procedure 1 (Wheel sensor or
rotor) (Cont'd)
BR-78