Infiniti QX4 (R50). Manual — part 112
Motor Relay or Motor
DIAGNOSTIC PROCEDURE
=NBBR0104
Malfunction code No. 61
1
INSPECTION START
ABS motor relay inspection
SBR491E
©
GO TO 2.
2
CHECK FUSIBLE LINK
Check 40A fusible link d. For fusible link layout, refer to EL-16, “POWER SUPPLY ROUTING”.
Is fusible link OK?
Yes
©
GO TO 3.
No
©
GO TO 6.
3
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?
Yes
©
GO TO 4.
No
©
INSPECTION END
4
CHECK ABS ACTUATOR AND ELECTRIC UNIT GROUND CIRCUIT
Refer to “ABS ACTUATOR AND ELECTRIC UNIT GROUND” in “Ground Circuit Check”, BR-53.
Is ground circuit OK?
Yes
©
GO TO 5.
No
©
Repair harness or connector.
GI
MA
EM
LC
EC
FE
AT
TF
PD
AX
SU
ST
RS
BT
HA
SC
EL
IDX
TROUBLE DIAGNOSES FOR SELF-DIAGNOSTIC ITEMS
ABS
Motor Relay or Motor
BR-61
5
CHECK MOTOR RELAY POWER SUPPLY CIRCUIT
1. Disconnect ABS actuator and electric unit connector.
2. Check voltage between ABS actuator and electric unit connector E111 (body side) terminal 17 and ground.
SBR492E
Does battery voltage exist?
Yes
©
Replace ABS actuator and electric unit.
No
©
Check the following.
If NG, repair harness or connector.
I
Harness connector E111
I
Harness for open or short between ABS actuator and electric unit and fusible link
6
REPLACE FUSIBLE LINK
Replace fusible link.
Does the fusible link blow out when ignition switch is turned ON?
Yes
©
GO TO 7.
No
©
INSPECTION END
7
CHECK ABS ACTUATOR MOTOR POWER SUPPLY CIRCUIT FOR SHORT
1. Disconnect battery cable and ABS actuator and electric unit connector.
2. Check continuity between ABS actuator and electric unit connector E111 (body side) terminal 17 and ground.
SBR493E
Continuity should not exist.
Does continuity exist?
Yes
©
Check the following.
If NG, repair harness or connector.
I
Harness connector E111
I
Harness for open or short between ABS actuator and electric unit and fusible link
No
©
Replace ABS actuator and electric unit.
TROUBLE DIAGNOSES FOR SELF-DIAGNOSTIC ITEMS
ABS
Motor Relay or Motor (Cont’d)
BR-62
Low Voltage
DIAGNOSTIC PROCEDURE
NBBR0105
Malfunction code No. 57
1
INSPECTION START
ABS actuator and electric unit power supply and ground circuit inspection
SBR494E
©
GO TO 2.
2
CHECK FUSE
Check 7.5A fuse No. 7. For fuse layout, refer to EL-16, “POWER SUPPLY ROUTING”.
Is fuse OK?
Yes
©
GO TO 3.
No
©
GO TO 6.
3
CHECK CONNECTOR
1. Disconnect ABS actuator and electric unit connector. Check terminals for damage or loose connections. Then recon-
nect connector.
2. Carry out self-diagnosis again.
Does warning lamp activate again?
Yes
©
GO TO 4.
No
©
INSPECTION END
4
CHECK ABS ACTUATOR AND ELECTRIC UNIT GROUND CIRCUIT
Refer to “ABS ACTUATOR AND ELECTRIC UNIT GROUND” in “Ground Circuit Check”, BR-53.
Is ground circuit OK?
Yes
©
GO TO 5.
No
©
Repair harness or connector.
GI
MA
EM
LC
EC
FE
AT
TF
PD
AX
SU
ST
RS
BT
HA
SC
EL
IDX
TROUBLE DIAGNOSES FOR SELF-DIAGNOSTIC ITEMS
ABS
Low Voltage
BR-63
5
CHECK ABS ACTUATOR AND ELECTRIC UNIT POWER SUPPLY CIRCUIT
1. Disconnect ABS actuator and electric unit connector.
2. Check voltage between ABS actuator and electric unit connector E111 (body side) terminal 15 and ground.
SBR495E
Does battery voltage exist when ignition switch is turned ON?
Yes
©
Replace ABS actuator and electric unit.
No
©
Check the following.
If NG, repair harness or connector.
I
Harness connector E111
I
Harness for open or short between ABS actuator and electric unit and fuse
6
REPLACE FUSE
Replace fuse.
Does the fuse blow out when ignition switch is turned ON?
Yes
©
GO TO 7.
No
©
INSPECTION END
7
CHECK ABS ACTUATOR AND ELECTRIC UNIT POWER SUPPLY CIRCUIT FOR SHORT
1. Disconnect battery cable and ABS actuator and electric unit connector.
2. Check continuity between ABS actuator and electric unit connector E111 (body side) terminal 15 and ground.
SBR496E
Continuity should not exist.
Does continuity exist?
Yes
©
Check the following.
If NG, repair harness or connector.
I
Harness connector E111
I
Harness for open or short between ABS actuator and electric unit and fuse
No
©
Replace ABS actuator and electric unit.
TROUBLE DIAGNOSES FOR SELF-DIAGNOSTIC ITEMS
ABS
Low Voltage (Cont’d)
BR-64
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