Infiniti I30 (A33). Manual — part 120
3
CHECK WHEEL SENSOR CIRCUIT
1. Disconnect control unit connector.
2. Check resistance between control unit connector terminals.
Code No. 21 or 22 (Front RH wheel)
Terminals 10 and 25
Code No. 25 or 26 (Front LH wheel)
Terminals 8 and 23
Code No. 31 or 32 (Rear RH wheel)
Terminals 14 and 29
Code No. 35 or 36 (Rear LH wheel)
Terminals 12 and 27
Resistance: 0.8 - 1.85 k
Ω
SBR477EB
Is resistance 0.8 - 1.85 k
Ω
?
Yes
©
GO TO 5.
No
©
GO TO 4.
4
CHECK WHEEL SENSOR
Check resistance of each sensor. (See NOTE.)
Resistance: 0.8 - 1.85 k
Ω
SBR478ED
Is resistance 0.8 - 1.85 k
Ω
?
Yes
©
Repair harness and connectors between control unit connector and wheel sensor con-
nector.
No
©
Replace wheel sensor.
5
CHECK TIRE
Check for inflation pressure, wear and size of each tire.
Are tire pressure and size correct and is tire wear within specifications?
Yes
©
GO TO 6.
No
©
Adjust tire pressure or replace tire(s).
GI
MA
EM
LC
EC
FE
AT
AX
SU
ST
RS
BT
HA
SC
EL
IDX
TROUBLE DIAGNOSES FOR SELF-DIAGNOSTIC ITEMS
ABS
Wheel Sensor or Rotor (Cont’d)
BR-63
6
CHECK WHEEL BEARING
Check wheel bearing axial end play.
Check clearance between sensor and rotor.
Clearance:
Front
0.273 - 0.925 mm (0.0107 - 0.0364 in)
Rear
0.385 - 0.973 mm (0.0152 - 0.0383 in)
SBR333E
SBR069CA
Is axial end play and clearance within specifications?
Yes
©
GO TO 7.
No
©
Clean sensor fixing portion, or replace sensor.
7
CHECK SENSOR ROTOR
Check sensor rotor for teeth damage.
Is sensor rotor free from damage?
Yes
©
Check control unit pin terminals for damage or the connection of control unit harness
connector. Reconnect control unit harness connector. Then retest.
No
©
Replace sensor rotor.
TROUBLE DIAGNOSES FOR SELF-DIAGNOSTIC ITEMS
ABS
Wheel Sensor or Rotor (Cont’d)
BR-64
ABS Actuator Solenoid Valve or Solenoid Valve
Relay
=NHBR0116
DIAGNOSTIC PROCEDURE
NHBR0116S01
Malfunction code No. 41, 45, 55, 42, 46, 56, 63, 51, 52
1
INSPECTION START
Solenoid valve relay inspection
SBR591EA
©
GO TO 2.
2
CHECK SOLENOID VALVE POWER SUPPLY CIRCUIT
Check 40A [E] fusible link (ABS ACTR) for ABS solenoid valve relay. For fusible link layout, refer to POWER SUPPLY
ROUTING in EL section.
Is fusible link OK?
Yes
©
GO TO 3.
No
©
GO TO 7.
3
CHECK FUSE
Check 10A fuse No. 31. For fuse layout, refer to “POWER SUPPLY ROUTING” in EL section.
Is fuse OK?
Yes
©
GO TO 4.
No
©
GO TO 9.
GI
MA
EM
LC
EC
FE
AT
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-65
4
CHECK CONNECTOR
1. Disconnect connectors from control unit and ABS actuator. Check terminals for damage or loose connection. Then
reconnect connectors.
2. Carry out self-diagnosis again.
Does warning lamp activate again?
Yes
©
GO TO 5.
No
©
INSPECTION END
5
CHECK GROUND CIRCUIT
Refer to ABS ACTUATOR AND ELECTRIC UNIT in Ground Circuit Check, BR-60.
Is ground circuit OK?
Yes
©
GO TO 6.
No
©
Repair harness and connectors.
6
CHECK SOLENOID VALVE POWER SUPPLY CIRCUIT
1. Disconnect ABS actuator and electric unit connector.
2. Check voltage between ABS actuator and electric unit connector terminal 15 and ground.
SBR592E
Does battery voltage exist?
Yes
©
Replace ABS actuator and electric unit.
No
©
Check the following.
I
Harness connector E9
I
Harness for open or short between ABS actuator and electric unit and fusible link
If NG, repair harness or connectors.
7
REPLACE FUSIBLE LINK
Replace fusible link.
Does the fusible link blow out when ignition switch is turned “ON”?
Yes
©
GO TO 8.
No
©
INSPECTION END
TROUBLE DIAGNOSES FOR SELF-DIAGNOSTIC ITEMS
ABS
ABS Actuator Solenoid Valve or Solenoid Valve Relay (Cont’d)
BR-66
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