Page 1233 of 1833

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-19.
OK
ENGReplace.
F
Check brake pads, rotor and drums.
OKENGReplace.
Check brake fluid level in reservoir tank.
OKENGFill 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
ENGGo to Self-diagnosis,
BR-60.
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
ENGGo to Self-diagnosis,
BR-60.
END
SBR451D
SBR389C
SBR058C
SBR059C
YBR266
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TROUBLE DIAGNOSES
BR-66
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Page 1234 of 1833
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-67
http://vnx.su/
Page 1235 of 1833

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 IF ABS (and BRAKE) WARNING
LAMP(S) ACTIVATES.
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) terminals q
21,q13and ground.
Battery voltage should not exist.
OK
ENG Repair harness or connec-
tor.
Check voltage between combination con-
nector LHD:
F118, RHD:M837terminal q28
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-68
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Page 1236 of 1833
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.
F29 LHD:F119RHD:M838
LHD:F118RHD:M837
Continu-
ity
Terminal q
13q1ÐYes
Terminal q
21Ðq44Ye s
YBR270
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TROUBLE DIAGNOSES
Diagnostic Procedure 1 (Not self-diagnostic
item) (Cont'd)
BR-69
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Page 1237 of 1833

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
F29terminals q13,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) terminal q
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-70
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Page 1238 of 1833

qA
REPLACE.
Replace fuse.
Does the fuse blow out when ignition
switch is turned ON?
Ye s
ENoInspection 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 terminal q
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
I Harness 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.
F29 LHD:F119RHD:M838
LHD:F118RHD:M837
Continu-
ity
Terminal q
13q1ÐYes
Terminal q
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-71
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Page 1239 of 1833

Diagnostic Procedure 3 (ABS actuator solenoid
valve and solenoid valve relay)
Malfunction code Nos. 41, 42, 45, 46, 55, 56, 63
CHECK FUSIBLE LINK.
Check 40A. For fusible link layout, refer to
POWER SUPPLY ROUTING in EL section.
OK
ENGqA(Go to next page.)
CHECK FUSE.
Check 10A fuse
19. For fuse layout, refer
to POWER SUPPLY ROUTING in EL sec-
tion.
OK
ENG qB(Go to next page.)
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 ABS ACTUATOR AND ELECTRIC
UNIT GROUND CIRCUIT.
Refer to ABS ACTUATOR AND ELECTRIC
UNIT GROUND in Ground Circuit Check,
BR-67.
OK
ENGRepair harness and con-
nector.
CHECK SOLENOID VALVE RELAY
POWER SUPPLY CIRCUIT.
1. Disconnect ABS actuator and electric
unit connector.
2. Check voltage between ABS actuator and electric unit connector
F29(body
side) terminal q
18and 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.
REPLACE.
Replace ABS actuator and electric unit.
NBR329
NBR330
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TROUBLE DIAGNOSES
BR-72
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Page 1240 of 1833

qA
REPLACE.
Replace fusible link.
Does the fusible link blow out when
ignition switch is turned ON?
Ye s
ENoInspection end
CHECK SOLENOID VALVE RELAY
POWER SUPPLY CIRCUIT.
1. Disconnect battery cable and ABS
actuator and electric unit connector.
2. Check continuity between ABS actuator and electric unit connector
F29(body
side) terminal q
18and ground.
Continuity should not exist.
OK
ENG Check the following
IHarness connector
F29, LHD:F68and
M784, or RHD:F79and
M744
IHarness for open or short
between ABS actuator
and electric unit and fus-
ible link
If NG, repair harness or
connector.
REPLACE.
Replace ABS actuator and electric unit.
qB
REPLACE.
Replace fuse.
Does the fuse blow out when ignition
switch is turned ON?
No
EYe s 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.
END
Inspection end
NBR331
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TROUBLE DIAGNOSES
Diagnostic Procedure 3 (ABS actuator solenoid
valve and solenoid valve relay) (Cont'd)
BR-73
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