Infiniti QX4 (R50). Manual — part 111
3
CHECK WHEEL SENSOR ELECTRICAL
1. Disconnect ABS actuator and electric unit connector.
2. Check resistance between ABS actuator and electric unit connector E111 (body side) terminals.
Code No. 21 or 22 (Front RH wheel)
Terminals 4 and 5
Code No. 25 or 26 (Front LH wheel)
Terminals 6 and 7
Code No. 31 or 32 (Rear RH wheel)
Terminals 1 and 2
Code No. 35 or 36 (Rear LH wheel)
Terminals 8 and 9
SBR486E
Resistance:
Front 0.9 - 1.1 k
Ω
Rear 1.44 - 1.76 k
Ω
Is front resistance 0.9 - 1.1 k
Ω
and rear resistance 1.44 - 1.76 k
Ω
?
Yes
©
GO TO 5.
No
©
GO TO 4.
4
CHECK WHEEL SENSOR
Check each sensor for resistance.
SBR487E
Resistance:
Front 0.9 - 1.1 k
Ω
Rear 1.44 - 1.76 k
Ω
Is front resistance 0.9 - 1.1 k
Ω
and rear resistance 1.44 - 1.76 k
Ω
?
Yes
©
Check the following.
If NG, repair harness or connectors.
I
Harness connectors E111, E14, E51, B8, B69
I
Harness for open or short between wheel sensor connectors and ABS actuator and
electric unit
No
©
Replace wheel sensor.
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
Wheel Sensor or Rotor (Cont’d)
BR-57
5
CHECK TIRE
Check for inflation pressure, wear and size of each tire. (See NOTE)
Are tire pressure and size correct and is tire wear within specifications?
Yes
©
GO TO 6.
No
©
Adjust tire pressure or replace tire(s). (See NOTE)
6
CHECK WHEEL BEARING
Check wheel bearing axial end play. (See NOTE)
Is wheel bearing axial end play within specifications? Refer to AX-4, “Front Wheel Bearing” and AX-18, “Rear
Wheel Bearing”.
Yes
©
GO TO 7.
No
©
Check wheel bearing. Refer to AX-4, “Front Wheel Bearing” and AX-18, “Rear Wheel
Bearing”.
7
CHECK SENSOR ROTOR
Check sensor rotor for teeth damage. (See NOTE)
Is sensor rotor free from damage?
Yes
©
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.
No
©
Replace sensor rotor. (See NOTE)
TROUBLE DIAGNOSES FOR SELF-DIAGNOSTIC ITEMS
ABS
Wheel Sensor or Rotor (Cont’d)
BR-58
ABS Actuator Solenoid Valve or Solenoid Valve
Relay
DIAGNOSTIC PROCEDURE
=NBBR0103
Malfunction code No. 41, 45, 55, 42, 46, 56, 63
1
INSPECTION START
Solenoid valve relay inspection
SBR488E
©
GO TO 2.
2
CHECK FUSIBLE LINK
Check 40A fusible link c. 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 connector from ABS actuator and electric unit. 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
ABS Actuator Solenoid Valve or Solenoid Valve Relay
BR-59
5
CHECK SOLENOID VALVE 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 18 and ground.
SBR489E
Does battery voltage exist?
Yes
©
Replace ABS actuator and electric unit.
No
©
Check the following.
If NG, repair harness or connectors.
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 SOLENOID VALVE RELAY 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 18 and ground.
SBR490E
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
ABS Actuator Solenoid Valve or Solenoid Valve Relay (Cont’d)
BR-60
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст