2002 NISSAN TERRANO Service Repair Manual

ACTIVE TEST PROCEDURE
IWhen conducting Active test, vehicle must be stationary.
IWhen ABS warning lamp stays on, never conduct Active test.
1) Turn ignition switch to the ªLOCKº position.
2) Connect CONSULT-II to Data Link Connector.
3) Start engine.
1) Touch ªSTARTº on CONSULT-II screen.
2) Touch ªABSº.
3) Touch ªACTIVE TESTº.
1) Select active test item by touching screen.
2) Touch ªSTARTº.
Carry out the active test by touching screen key.
C2NCS01
C2SSE01
C2SDM01
C2STI01
C2FRS01
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TROUBLE DIAGNOSES
CONSULT-II Inspection Procedure (Cont'd)
BR-63

ACTIVE TEST MODE
TEST ITEM CONDITION JUDGEMENT
FR RH SOLENOID
FR LH SOLENOID
RR SOLENOID
Engine is running.Brake fluid pressure control operation
IN SOL OUT SOL
UP (Increase):
KEEP (Hold):
DOWN (Decrease):OFF
ON
ONOFF
OFF
ON
ABS MOTORABS actuator motor
ON: Motor runs (ABS motor relay ON)
OFF: Motor stops (ABS motor relay OFF)
G-SWITCHIgnition switch is ON or
engine is running.Check G-switch circuit
OFF: G-switch OFF
ON: G-switch ON
Note: Active test will automatically stop ten seconds after the test starts. (LIMIT SIGNAL monitor shows
ON.)
TROUBLE DIAGNOSES
CONSULT-II Inspection Procedure (Cont'd)
BR-64

Preliminary Check
Check brake fluid level in reservoir
tank.
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Low fluid level may indicate brake pad
wear or leakage from brake line.
Check brake line for leakage.
OKENG
Repair.
F
Check brake booster for operation and air
tightness. Refer to BR-14.
OK
ENG
Replace.
F
Check brake pads, rotor and drums.
OKENG
Replace.
Check brake fluid level in reservoir tank.
OKENG
Fill up brake fluid.
Check warning lamp(s) or warning sound
activation.
When ignition switch is turned on, warning
lamp(s) turn(s) on.
OK
ENG
Check fuse, warning lamp
bulb and warning lamp cir-
cuit.
Check warning lamp(s) for deactivation
after engine is started.
OK
ENG
Go to Self-diagnosis,
BR-59.
Drive vehicle at speeds over 30 km/h (19
MPH) for at least one minute.
Ensure warning lamp(s) remain(s) off
while driving.
OK
ENG
Go to Self-diagnosis,
BR-59.
END
SBR451D
SBR389C
SBR058C
SBR059C
YBR266
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TROUBLE DIAGNOSES
BR-65

Ground Circuit Check
ABS CONTROL UNIT GROUND
ICheck resistance between ABS actuator and electric unit con-
nector terminals and ground.
Resistance: approximately 0W
NBR321
TROUBLE DIAGNOSES
BR-66

Diagnostic Procedure 1 (Not self-diagnostic
item)
Warning lamp does not come on when ignition switch is
turned ON.
CHECK FUSE
Check 10A fuse
12. For fuse layout, refer
to POWER SUPPLY ROUTING EL sec-
tion.
OK
ENG
Replace fuse.
CHECK ABS (and BRAKE) WARNING
LAMP(S) ACTIVATE
Disconnect ABS actuator and electric unit
connector.
Does the warning lamp(s) activate?
No
EYe s
qA(Go to next page.)
CHECK HARNESS FOR SHORT.
1. Disconnect ABS connector and electric
unit connector.
2. Check voltage between ABS actuator
and electric unit connector
F29(body
side) terminalsq
21,q13and ground.
Battery voltage should not exist.
OK
ENG
Repair harness or connec-
tor.
Check voltage between combination con-
nector LHD:
F118, RHD:M837terminalq28
and ground.
Battery Voltage should exist.
OK
ENG
Replace harness or con-
nector.
CHECK WARNING LAMP(S)
1. Turn ignition switch to ªOFFº position.
2. Check ABS (and Brake) warning
lamp(s).
OK
ENG
Replace bulb(s).
qA
YBR267
YBR268
NBR322
YBR269
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TROUBLE DIAGNOSES
BR-67

qA
CHECK HARNESS FOR SHORT.
1. Disconnect combination meter connec-
tor LHD:
F118andF119, or RHD:M837
andM838.
2. Check continuity between ABS actuator
and electric unit connector
F29and
combination meter connector LHD:
F118andF119, or RHD:M837and
M838.
OK
ENG
Replace harness or con-
nector(s).
Check combination meter
NG
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
retest.
EOK
Inspection end
REPLACE.
Replace ABS actuator and electric unit.
F29LHD:F119RHD:M838
LHD:F118RHD:M837
Continu-
ity
Terminalq
13q1ÐYes
Terminalq
21Ðq44Ye s
YBR270
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TROUBLE DIAGNOSES
Diagnostic Procedure 1 (Not self-diagnostic
item) (Cont'd)
BR-68

Diagnostic Procedure 2 (Warning lamp stays
on when ignition switch is turned ON)
CHECK FUSE.
Check 10A fuse
19. For fuse layout, refer
to POWER SUPPLY ROUTING in EL sec-
tion.
OK
ENG
qA(Go to next page.)
CHECK WARNING LAMP.
1. Disconnect ABS actuator and electric
unit connector.
2. Connect suitable wire between ABS
actuator and electric unit harness con-
nector
F29terminalsq13,q21and ground.
Warning lamp should not activate.
OK
ENG
qB(Go to next page.)
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.
NG
EOK
Inspection end
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
F29(body
side) terminalq
16and ground.
Continuity should exist.
OK
ENG
Check the following.
IHarness connector
F29
IHarness for open or short
between ABS actuator
and electric unit and
ground
If NG, repair harness or
connector.
REPLACE.
Replace ABS actuator and electric unit.
YBR271
NBR345
NBR326
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TROUBLE DIAGNOSES
BR-69

qA
REPLACE.
Replace fuse.
Does the fuse blow out when ignition
switch is turned ON?
Ye s
ENo
Inspection end
CHECK ABS ACTUATOR AND ELEC-
TRIC UNIT POWER SUPPLY CIRCUIT
FOR SHORT.
1. Disconnect battery cable and ABS
actuator and electric unit connector
F29.
2. Check continuity between ABS actuator
and electric unit connector
F29body
side terminalq
15and ground.
Continuity should not exist.
OK
ENG
Check the following.
IHarness connector
F29
IHarness for open or short
between ABS actuator
and electric unit and fuse
If NG, repair harness or
connector.
REPLACE.
Replace ABS actuator and electric unit.
qB
CHECK ABS WARNING LAMP CON-
TROL CIRCUIT.
1. Disconnect combination meter connector
LHD:
F118andF119, or RHD:M837and
M838.
2. Check continuity between ABS actuator
and electric unit connector
F29(body
side) terminal and combination meter
connector LHD:
F118andF119,or
RHD:
M837andM838.
OK
ENG
Check the following.
IHarness connectors
LHD:
F118andF119,or
RHD:
M837andM838
andF29
IHarness for open or
short between ABS
actuator and electric unit
and combination meter
If NG, repair harness or
connectors.
CHECK COMBINATION METER.
Check combination meter. Refer to WARN-
ING LAMPS in EL section.
F29LHD:F119RHD:M838
LHD:F118RHD:M837
Continu-
ity
Terminalq
13q1ÐYes
Terminalq
21Ðq44Ye s
NBR327
YBR270
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TROUBLE DIAGNOSES
Diagnostic Procedure 2 (Warning lamp stays
on when ignition switch is turned ON) (Cont'd)
BR-70