2001 NISSAN ALMERA relay

6 CHECK RELAY CIRCUIT
1. Turn ignition switch to ON.
+Check voltage between terminal4-3and2-3.
SAT010K
OK or NG
OK©GO TO 7.
NG©Replace A/T device.
7 CHECK PARK POSITION SWITCH
Refer to ªA/T device Checkº, AT-348.
OK or NG
OK©GO TO 8.
NG©Replace A/T device.
8 CHECK SHIFT LOCK SOLENOID
Refer to ªA/T device Checkº, AT-348.
OK or NG
OK©GO TO 9.
NG©Replace A/T device.
9 SHIFT LOCK OPERATION
1. Reconnect shift lock harness connector.
2. Turn ignition switch from ªOFFº to ªONº position. (Do not start engine.)
3. Recheck shift lock operation.
OK or NG
OK©INSPECTION END
NG©1. Perform A/T device input/output signal inspection test.
2. If NG, recheck harness connector connection.
A/T SHIFT LOCK SYSTEM
Diagnostic Procedure (Cont'd)
AT-347

REAR DISC BRAKE (CAM & STRUT TYPE)..............35
Component ................................................................35
Pad Replacement ......................................................35
Removal .....................................................................37
Disassembly...............................................................37
Inspection...................................................................38
CALIPER.................................................................38
ROTOR...................................................................39
Assembly ...................................................................39
Installation ..................................................................42
REAR DISC BRAKE (BALL & RAMP TYPE)..............43
Component ................................................................43
Pad Replacement ......................................................43
Removal .....................................................................45
Disassembly...............................................................45
Inspection...................................................................45
CALIPER.................................................................45
ROTOR...................................................................46
Installation ..................................................................46
PARKING BRAKE CONTROL......................................47
Components...............................................................47
Removal and Installation ...........................................47
Inspection...................................................................47
Adjustment .................................................................48
ABS
DESCRIPTION...............................................................49
Purpose......................................................................49
ABS (Anti-Lock Brake System) Operation ................49
ABS Hydraulic Circuit ................................................49
System Components .................................................50
System Description ....................................................50
SENSOR.................................................................50
CONTROL UNIT......................................................50
ABS ACTUATOR AND ELECTRIC UNIT....................50
Component Parts and Harness Connector
Location .....................................................................52
Schematic/Sedan .......................................................53
Wiring Diagram - ABS -/Sedan..................................54
Schematic/Hatchback ................................................58
Wiring Diagram - ABS -/Hatchback ...........................59
MODELS WITH SELF-DIAGNOSIS FUNCTION
(DATA LINK CONNECTOR TERMINAL NO. 9)
...........59
MODELS WITHOUT SELF-DIAGNOSIS
FUNCTION (DATA LINK CONNECTOR TERMINAL
NO. 9)
.....................................................................60
ON BOARD DIAGNOSTIC SYSTEM
DESCRIPTION...............................................................63
Self-diagnosis (Only Models with Data Link
Connector Terminal No. 9) ........................................63
FUNCTION..............................................................63
SELF-DIAGNOSIS PROCEDURE..............................63
HOW TO READ SELF-DIAGNOSTIC RESULTS
(MALFUNCTION CODES)
........................................64
HOW TO ERASE SELF-DIAGNOSTIC RESULTS
(MALFUNCTION CODES)
........................................64
CONSULT-II ...............................................................65
CONSULT-II APPLICATION TO ABS..........................65
ECU (ABS CONTROL UNIT) PART NUMBER
MODE
.....................................................................65
CONSULT-II Inspection Procedure............................65
SELF-DIAGNOSIS PROCEDURE..............................65
SELF-DIAGNOSTIC RESULTS MODE.......................67
DATA MONITOR PROCEDURE................................68
ACTIVE TEST PROCEDURE....................................69
DATA MONITOR MODE...........................................70
ACTIVE TEST MODE...............................................70
TROUBLE DIAGNOSIS - INTRODUCTION..................71
How to Perform Trouble Diagnoses for Quick
and Accurate Repair ..................................................71
INTRODUCTION......................................................71
TROUBLE DIAGNOSIS - BASIC INSPECTION...........72
Preliminary Check......................................................72
Ground Circuit Check ................................................75
ABS ACTUATOR AND ELECTRIC UNIT GROUND.....75
TROUBLE DIAGNOSIS - GENERAL
DESCRIPTION...............................................................76
Malfunction Code/Symptom Chart.............................76
MODELS WITH SELF-DIAGNOSIS FUNCTION
(DATA LINK CONNECTOR TERMINAL NO. 9)
...........76
TROUBLE DIAGNOSES FOR SELF-DIAGNOSTIC
ITEMS.............................................................................78
Wheel Sensor or Rotor ..............................................78
DIAGNOSTIC PROCEDURE.....................................78
ABS Actuator Solenoid Valve or Solenoid Valve
Relay ..........................................................................81
DIAGNOSTIC PROCEDURE.....................................81
Motor Relay or Motor.................................................84
DIAGNOSTIC PROCEDURE.....................................84
Low Voltage ...............................................................86
DIAGNOSTIC PROCEDURE.....................................86
Control Unit ................................................................88
DIAGNOSTIC PROCEDURE.....................................88
TROUBLE DIAGNOSES FOR SYMPTOMS.................89
1. ABS Works Frequently ..........................................89
2. Unexpected Pedal Action ......................................89
3. Long Stopping Distance ........................................90
4. ABS Does Not Work ..............................................91
5. Pedal Vibration and Noise.....................................92
6. ABS Warning Lamp Does Not Come On
When Ignition Switch Is Turned On...........................93
7. ABS Warning Lamp Stays On When Ignition
Switch Is Turned On ..................................................95
REMOVAL AND INSTALLATION.................................97
Wheel Sensors ..........................................................97
ABS Actuator and Electric Unit..................................98
CONTENTS(Cont'd)
BR-2

System ComponentsNJBR0086
SBR758E
SBR124B
System DescriptionNJBR0087SENSORNJBR0087S01The sensor unit consists of a gear-shaped sensor rotor and a sen-
sor element. The element contains a bar magnet around which a
coil is wound. The sensor is installed on the back side of the brake
rotor. Sine-wave current is generated by the sensor as the wheel
rotates. The frequency and voltage increase(s) as the rotating
speed increases.
SBR759E
CONTROL UNITNJBR0087S02The control unit computes the wheel rotating speed by the signal
current sent from the sensor. Then it supplies a DC current to the
actuator solenoid valve. It also controls ON-OFF operation of the
valve relay and motor relay. If any electrical malfunction should be
detected in the system, the control unit causes the warning lamp
to light up. In this condition, the ABS will be deactivated by the
control unit, and the vehicle's brake system reverts to normal
operation.
SBR176E
ABS ACTUATOR AND ELECTRIC UNITNJBR0087S03The ABS actuator and electric unit contains:
+An electric motor and pump
+Two relays
+Eight solenoid valves, each inlet and outlet for
Ð LH front
Ð RH front
Ð LH rear
Ð RH rear
+ABS control unit
DESCRIPTIONABS
System Components
BR-50

CONSULT-IINJBR0092CONSULT-II APPLICATION TO ABSNJBR0092S01
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 right outlet solenoid valve X X X
Rear left inlet 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 ACTIVE TEST
screen.)XXX
ABS warning lamp Ð X Ð
Battery voltage X X Ð
Control unit X Ð Ð
X: Applicable
Ð: Not applicable
ECU (ABS CONTROL UNIT) PART NUMBER MODENJBR0092S02Ignore the ECU part number displayed in the ECU PART NUMBER MODE. Refer to parts catalog to order
the ABS actuator and electric unit.
SEF378Y
CONSULT-II Inspection ProcedureNJBR0093SELF-DIAGNOSIS PROCEDURENJBR0093S011. Turn ignition switch OFF.
2. Connect CONSULT-II to data link connector.
3. Start engine.
4. Drive vehicle over 30 km/h (19 MPH) for at least one minute.
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTIONABS
CONSULT-II
BR-65

Diagnostic item Diagnostic item is detected when ...Reference
Page
RR RH OUT ABS SOL
[SHORT]+Circuit for rear right outlet solenoid valve is shorted.
(An abnormally high output voltage is entered.)BR-81
RR LH OUT ABS SOL
[SHORT]+Circuit for rear left outlet solenoid valve is shorted.
(An abnormally high output voltage is entered.)BR-81
ABS ACTUATOR RELAY
[ABNORMAL]+Actuator solenoid valve relay is ON, even control unit sends off signal.
+Actuator solenoid valve relay is OFF, even control unit sends on signal.BR-81
ABS MOTOR RELAY
[ABNORMAL]+Circuit for actuator motor is open or shorted.
+Actuator motor relay is stuck.BR-84
BATTERY VOLT
[ABNORMAL]+Power source voltage supplied to ABS control unit is abnormally low. BR-86
CONTROL UNIT+Function of calculation in ABS control unit has failed. BR-88
*1: Be sure to confirm the ABS warning lamp illuminates when the ignition switch is turned ON after repairing the shorted sensor circuit,
but the lamp goes out when driving the vehicle over 30 km/h (19 MPH) for one minute in accordance with SELF-DIAGNOSIS
PROCEDURE.
PBR455D
DATA MONITOR PROCEDURENJBR0093S031. Turn ignition switch OFF.
2. Connect CONSULT-II to data link connector.
3. Turn ignition switch ON.
4. Touch ªSTARTº on CONSULT-II screen.
PBR385C
5. Touch ªABSº.
PST412B
6. Touch ªDATA MONITORº.
7. Touch ªSETTINGº on ªSELECT MONITOR ITEMº screen.
8. Touch ªLONG TIMEº on ªSET RECORDING CONDº screen.
9. Touch ªSTARTº on ªSELECT MONITOR ITEMº.
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTIONABS
CONSULT-II Inspection Procedure (Cont'd)
BR-68

DATA MONITOR MODENJBR0093S05
MONITOR ITEM CONDITION SPECIFICATION
FR RH SENSOR
FR LH SENSOR
RR RH SENSOR
RR LH SENSORDrive vehicle.
(Each wheel is rotating.)Displays computed vehicle speed from wheel sensor signal.
Almost the same speed as speedometer.
STOP LAMP SWTurn ignition switch ON and
depress brake pedal.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 IN SOL
RR OUT SOL
RL IN SOL
RL OUT SOLIgnition switch is turned ON or
engine is running.Operating conditions for each solenoid valve are indicated.
ABS is not operating: OFF
ACTUATOR RLY
Ignition switch is turned ON or
engine is running.Displays ON/OFF condition of ABS actuator relay.
When turning ignition switch ON, ABS actuator relay is oper-
ated.
MOTOR RELAYABS is not operating: OFF
ABS is operating: ON
WARNING LAMPWarning lamp is turned on: ON
Warning lamp is turned off: OFF
BATTERY VOLT Power supply voltage for control unit
ACTIVE TEST MODENJBR0093S06
TEST ITEM CONDITION JUDGEMENT
FR RH SOLENOID
FR LH SOLENOID
RR RH SOLENOID
RR LH SOLENOID
Ignition switch is turned ON.Brake fluid pressure control operation
IN SOL OUT SOL
UP (Increase): OFF OFF
KEEP (Hold): ON OFF
DOWN (Decrease): ON ON
ABS MOTORABS actuator motor
ON: Motor runs
OFF: Motor stops
NOTE:
Active test will automatically stop ten seconds after the test starts. (TEST IS STOPPED monitor shows ON.)
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTIONABS
CONSULT-II Inspection Procedure (Cont'd)
BR-70

Malfunction Code/Symptom ChartNJBR0097MODELS WITH SELF-DIAGNOSIS FUNCTION (DATA
LINK CONNECTOR TERMINAL NO. 9)
NJBR0097S01
Code No. (No. of LED flashes) Malfunctioning part Reference page
12 Self-diagnosis could not detect any malfunctions. Ð
18 Sensor rotor BR-78
21 Front right sensor (open-circuit) BR-78
22 Front right sensor (short-circuit) BR-78
25 Front left sensor (open-circuit) BR-78
26 Front left sensor (short-circuit) BR-78
31 Rear right sensor (open-circuit) BR-78
32 Rear right sensor (short-circuit) BR-78
35 Rear left sensor (open-circuit) BR-78
36 Rear left sensor (short-circuit) BR-78
41 Actuator front right outlet solenoid valve BR-81
42 Actuator front right inlet solenoid valve BR-81
45 Actuator front left outlet solenoid valve BR-81
46 Actuator front left inlet solenoid valve BR-81
51 Actuator rear right outlet solenoid valve BR-81
52 Actuator rear right inlet solenoid valve BR-81
55 Actuator rear left outlet solenoid valve BR-81
56 Actuator rear left inlet solenoid valve BR-81
57* Power supply (Low voltage) BR-86
61 Actuator motor or motor relay BR-84
63 Solenoid valve relay BR-81
71 Control unit BR-88
ABS warning lamp stays on when
ignition switch is turned on.Control unit power supply circuit
Warning lamp bulb circuit
Control unit or control unit connector
Solenoid valve relay stuck
Power supply for solenoid valve relay coilBR-95
ABS warning lamp stays on, during
self-diagnosis.Control unit Ð
ABS warning lamp does not come on
when ignition switch is turned on.Fuse, warning lamp bulb or warning lamp circuit
Control unitBR-93
ABS warning lamp does not come on
during self-diagnosis.Control unit Ð
Pedal vibration and noise Ð BR-92
Long stopping distance Ð BR-90
Unexpected pedal action Ð BR-89
ABS does not work. Ð BR-91
ABS works frequently. Ð BR-89
*: Under voltage that is too low, the control unit disable the ABS. It does not set the ABS in fail-safe condition. Instead, the ABS becomes
TROUBLE DIAGNOSIS Ð GENERAL DESCRIPTIONABS
Malfunction Code/Symptom Chart
BR-76

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