NISSAN TERRANO 2004 Service Repair Manual

Diagnostic Procedure 4 (Wheel sensor or rotor)
Malfunction code No. 21, 22, 25, 26, 31, 32, 35, 36 or 18
INSPECTION START
1. Disconnect connectors from ABS actua-tor and electric unit and wheel sensor
of malfunction code No. Check termi-
nals for damage or loose connections.
Then reconnect connectors.
2. Carry out self-diagnosis again. Does warning lamp activate again?
Ye s
ENo Inspection end
CHECK WHEEL SENSOR ELECTRICAL.
1. Disconnect ABS actuator and electric
unit connector.
2. Check resistance between ABS actua- tor and electric unit connector
F29
(body side) terminals.
Code No. 21 or 22 (Front RH wheel)
Terminals q
5andq4
Code No. 25 or 26 (Front LH wheel)
Terminals q
7andq6
Code No. 31 or 32 (Rear RH wheel)
Terminals q
2andq1
Code No. 35 or 36 (Rear LH wheel)
Terminals q
9andq8
Resistance: Front 0.9 - 1.1 kW
Rear 1.44 - 1.76 kW
NG
EOKqA(Go to next page.)
CHECK WHEEL SENSOR.
Check each sensor for resistance.
Resistance: Front 0.9 - 1.1 kW
Rear 1.44 - 1.76 kW
NG
EOKCheck the following.
IHarness connectors
F29,B57,B58,E15:
,E211:and
F32
IHarness for open or
short between wheel
sensor connectors and
ABS actuator and elec-
tric unit
If NG, repair harness or
connectors.
REPLACE.
Replace wheel sensor.
YBR273
NBR332
YBR274
H
H
H
TROUBLE DIAGNOSES
BR-74
http://vnx.su/

qA
NoteNote
CHECK TIRE.
Check for inflation pressure, wear and size
of each tire.
OK
ENG Adjust tire pressure or
replace tire(s).
Note
CHECK WHEEL BEARING
Check wheel bearing axial end play.
OK
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 harness
connector.
Reconnect ABS actuator and electric unit
harness connector. Then retest.
Note: Wheel position should be distinguished by code num-
bers except code No. 18 (sensor rotor).
H
H
H
H
TROUBLE DIAGNOSES
Diagnostic Procedure 4 (Wheel sensor or rotor)
(Cont'd)
BR-75
http://vnx.su/

Diagnostic Procedure 5 (Motor Relay or motor)
Malfunction code No. 61
CHECK FUSIBLE LINK.
Check 40A. For fusible link layout, refer to
POWER SUPPLY ROUTING in EL section.
OK
ENGqA(Go to next page.)
CHECK CONNECTOR
1. Disconnect ABS actuator and electric unit connector. Check terminals for dam-
age or loose connection. Then recon-
nect connector.
2. Carry out self-diagnosis again. Does warning lamp activate again?
Ye s
ENo Inspection end
CHECK MOTOR RELAY POWER SUP-
PLY CIRCUIT.
1. Disconnect ABS actuator and electric
unit connector.
2. Check voltage between ABS actuator and electric unit connector
F29(body
side) terminal q
17and ground.
Battery voltage should exist.
OK
ENG Check the following.
IHarness connector
F29,
LHD:
F68andM784,or
RHD:
F79andM744
I Harness for open or
short between ABS
actuator and electric unit
and fusible link.
If NG, repair harness or
connector.
CHECK ABS ACTUATOR AND ELECTRIC
UNIT GROUND.
Refer to ABS ACTUATOR AND ELECTRIC
UNIT GROUND in Ground Circuit Check,
BR-67.
OK
ENG Repair harness and termi-
nals.
REPLACE.
Replace ABS actuator and electric unit.
YBR275
NBR335
H
H
H
H
TROUBLE DIAGNOSES
BR-76
http://vnx.su/

qA
REPLACE.
Replace fusible link.
Does the fusible link blow out when
ignition switch is turned ON?
Ye s
ENoInspection end
CHECK ABS ACTUATOR MOTOR
POWER SUPPLY CIRCUIT.
1. Disconnect battery cable and ABS
actuator and electric unit connector
F29.
2. Check continuity between ABS actuator and electric unit connector
F29(body
side) terminal q
17and ground.
Continuity should not exist.
OK
ENG Check the following
IHarness connector
F29,
LHD:
F68andM784,or
RHD:
F79andM744
I Harness for open or
short between ABS
actuator and electric unit
and fusible link
If NG, repair harness or
connector.
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.
NBR336
H
H
H
TROUBLE DIAGNOSES
Diagnostic Procedure 5 (Motor Relay or motor)
(Cont'd)
BR-77
http://vnx.su/

Diagnostic Procedure 7 (Low voltage)
Malfunction code No. 57
CHECK CONNECTOR.
1. Disconnect ABS actuator and electricunit connector. Check terminals for
damage or loose connections. Then
reconnect connector.
2. Carry out self-diagnosis again. Does warning lamp activate again?
Ye s
ENo Inspection end
CHECK ABS CONTROL UNIT POWER
SUPPLY CIRCUIT.
1. Disconnect ABS actuator and electric
unit connector.
2. Check voltage between ABS actuator and electric unit connector
F29termi-
nal q
15and ground.
Battery voltage should exist when
ignition switch is turned ON.
OK
ENG qA(See below.)
CHECK ABS CONTROL UNIT GROUND.
Refer to ABS ACTUATOR AND ELEC-
TRIC UNIT GROUND in Ground Circuit
Check, BR-67.
OK
ENG Repair harness and con-
nector.
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.ENGReplace
Replace ABS actuator and
electric unit
qA
CHECK FUSE.
Check 10A fuse
19. For fuse layout, refer
to POWER SUPPLY ROUTING in EL sec-
tion.
OK
ENG Replace fuse.
CHECK ABS CONTROL UNIT POWER
SUPPLY CIRCUIT.
Check continuity between fuse and ABS
actuator and electric unit connector
F29
(body side) terminal q15.
OK
ENG
Check the following:
IHarness connector
F29,
M822, LHD:F66and
M787, or RHD:F76:
,F136:,M743:
andM829:
IHarness for open or
short between ABS
actuator and electric unit
and fuse
If NG, repair harness or
connector.
Check battery. Refer to BATTERY in EL
section.
NBR337
NBR338
H
H
H
H
H
H
TROUBLE DIAGNOSES
BR-78
http://vnx.su/

Diagnostic Procedure 8 (G sensor)
Malfunction code No. 17
CHECK G SENSOR POWER SUPPLY
CIRCUIT.
Check 10A fuse
19. For fuse layout,
refer to POWER SUPPLY ROUTING in
EL section.
OK
ENG Replace fuse.
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
ENo Inspection end
CHECK G SENSOR.
Refer to G SENSOR in Electrical Compo-
nents Inspection, BR-84
OK
ENGReplace G sensor.
CHECK G SENSOR POWER SUPPLY
CIRCUIT.
1. Disconnect G sensor connectors.
2. Check voltage between G sensor con- nector terminals q
1(B59),q3(B60)
and ground.
Battery voltage should exist.
OK
ENG Check the following.
IHarness connectors
B59,B60, LHD:B73,
RHD:
B67, LHD:F66,
RHD:
F76:, RHD:
F136:, LHD:M787,
RHD:
M743:, RHD:
M829:, LHD:F45,
RHD:
F80andM822
I Harness for open or
short between G sensor
and ABS actuator and
electric unit
If NG, repair harness or
connectors.
CHECK G SENSOR GROUND.
1. Disconnect ABS actuator and electric unit connector and G sensor connec-
tors.
2. Check continuity between ABS actuator and electric unit connector
F29(body
side) terminals q
20,q10and G sensor
connectors (body side) terminals q
2
(B59),q4(B60).
Continuity should exist.
OK
ENG Check the following.
IHarness connectors
B59,B60, LHD:B73,
RHD:
B67,F29, LHD:
F45and RHD:F80
I Harness for open or
short between G sensor
and ABS actuator and
electric unit
If NG, repair harness or
connectors.
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.
YBR276
YBR277
YBR278
H
H
H
H
H
TROUBLE DIAGNOSES
BR-79
http://vnx.su/

Diagnostic Procedure 9 (Control unit)
Malfunctioning code No. 71
CHECK CONNECTOR.
1. Disconnect ABS actuator and electricunit connector.
Check terminals for damage or loose
connections. Then reconnect connector.
2. Carry out self-diagnosis again. Does warning lamp activate again?
Ye s
ENo Inspection end
CHECK ABS ACTUATOR AND ELEC-
TRIC UNIT POWER SUPPLY CIRCUIT.
Check voltage. Refer to
in Diagnostic
Procedure 7, BR-78.
CHECK SELF-DIAGNOSTIC RESULTS.
Does warning lamp indicate code No. 71
again?
No
EYe s Replace ABS actuator and
electric unit.
INSPECTION
Inspect the system according to the code
No.
NBR343H
H
H
TROUBLE DIAGNOSES
BR-80
http://vnx.su/

Diagnostic Procedure 10 (Pedal vibration and
noise)
INSPECTION START
1. Apply brake.
2. Start engine.
3. Does the symptom appear only whenengine is started?
No
EYe s Carry out self-diagnosis.
Refer to BR-60.
CHECK IF SYMPTOM APPEARS.
Does the symptom appear when electrical
equipment switches (such as headlamp)
are operated?
Ye s
ENoGo toin Diagnostic
Procedure 12, BR-82.
CHECK WHEEL SENSOR.
Check wheel sensor shield ground. For
location of shield ground, refer to wiring
diagram and ªHARNESS LAYOUTº in EL
section.
OK
ENG Repair wheel sensor.
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.
Note: ABS may operate and cause vibration under any of the
following conditions.
Diagnostic Procedure 11 (Long stopping
distance)
CHECK ABS PERFORMANCE.
Disconnect ABS actuator and electric unit
connector and check whether stopping
distance is still long.
Ye s
ENoGo toin Diagnostic
Procedure 12, BR-82.
Perform Preliminary Check and air bleed-
ing.
Note: Stopping distance may be larger than vehicles without ABS when road condition is slippery.
SAT797AH
H
H
H
TROUBLE DIAGNOSES
BR-81
http://vnx.su/

Diagnostic Procedure 12 (Unexpected pedal
action)
CHECK BRAKE PEDAL STROKE.
Check brake pedal stroke. Is stroke exces-
sively large?
No
EYe sPerform Preliminary Check.
Refer to BR-66.
CHECK BRAKE PERFORMANCE
Disconnect ABS actuator and electric unit
connector and check whether brake is
effective.
Ye s
ENoPerform Preliminary Check.
Refer to BR-66.
CHECK IF WARNING LAMP ACTIVATES.
Ensure warning lamp remains off while
driving.
OK
ENG
Carry out self-diagnosis.
Refer to BR-60.
CHECK WHEEL SENSOR.
1. Check wheel sensor connector for ter-
minal damage or loose connection.
2. Perform wheel sensor mechanical check.
Refer to Diagnostic Procedure 4,
BR-74.
OK
ENG Repair.
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.
CAUTION: Drive at low speed and brake smoothly to prevent
rear wheels locking.
SBR540A
YBR279
H
H
H
H
TROUBLE DIAGNOSES
BR-82
http://vnx.su/

Diagnostic Procedure 13
SYMPTOM: ABS does not work.
Does the ABS warning lamp activate?
No
EYe sCarry out self-diagnosis.
Refer to BR-60.
Go toin Diagnostic Procedure 12,
BR-82.
Note: ABS does not work when vehicle speed is under 10 km/h (6 MPH).
Diagnostic Procedure 14
SYMPTOM: ABS works frequently.
CHECK WHEEL SENSOR.
1. Check wheel sensor connector for ter-
minal damage or loose connections.
2. Perform wheel sensor mechanical check.
Refer to Diagnostic Procedure 4,
BR-74.
OK
ENG Repair.
CHECK FRONT AXLES
Check front axles for excessive loose-
ness. Refer to FA section (ªFront Wheel
Bearingº, ªON-VEHICLE SERVICEº).
OK
ENGRepair.
Go toin Diagnostic Procedure 12,
BR-82.
H
H
H
TROUBLE DIAGNOSES
BR-83
http://vnx.su/