Infiniti I30 (A33). Manual — part 119
5
RECHECK BRAKE FLUID LEVEL
Check brake fluid level in reservoir tank again.
SBR451D
Is brake fluid filled between MAX and MIN lines on reservoir tank and/or has brake fluid been contaminated?
Yes
©
GO TO 6.
No
©
Fill up brake fluid.
6
CHECK WARNING LAMP ACTIVATION
Check warning lamp activation.
SBR588E
Does warning lamp turn on when ignition switch is turned “ON”?
Yes
©
GO TO 7.
No
©
Check fuse, warning lamp bulb and warning lamp circuit.
7
CHECK WARNING LAMP DEACTIVATION
Check warning lamp for deactivation after engine is started.
Does warning lamp turn off when engine is started?
Yes
©
GO TO 8.
No
©
Go to Self-diagnosis. Refer to BR-48, 50.
8
DRIVE VEHICLE
Drive vehicle at speeds over 30 km/h (19 MPH) for at least one minute.
Does warning lamp remain off after vehicle has been driven at 30 km/h (19 MPH) for at least one minute?
Yes
©
END
No
©
Go to Self-diagnosis. Refer to BR-48, 50.
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TROUBLE DIAGNOSIS — BASIC INSPECTION
ABS
Preliminary Check (Cont’d)
BR-59
SBR045EG
Ground Circuit Check
NHBR0113
ABS ACTUATOR AND ELECTRIC UNIT GROUND
NHBR0113S01
I
Check continuity between ABS actuator and electric unit con-
nector terminals and ground.
Continuity should exist.
TROUBLE DIAGNOSIS — BASIC INSPECTION
ABS
Ground Circuit Check
BR-60
Malfunction Code/Symptom Chart
NHBR0114
Code No. (No. of LED flashes)
Malfunctioning part
Reference page
12
Self-diagnosis could not detect any malfunctions.
—
21
Front right sensor (open-circuit)
22
Front right sensor (short-circuit)
25
Front left sensor (open-circuit)
26
Front left sensor (short-circuit)
31
Rear right sensor (open-circuit)
32
Rear right sensor (short-circuit)
35
Rear left sensor (open-circuit)
36
Rear left sensor (short-circuit)
41
Actuator front right outlet solenoid valve
42
Actuator front right inlet solenoid valve
45
Actuator front left outlet solenoid valve
46
Actuator front left inlet solenoid valve
51
Actuator rear right outlet solenoid valve
52
Actuator rear right inlet solenoid valve
55
Actuator rear left outlet solenoid valve
56
Actuator rear left inlet solenoid valve
57*
Power supply (Low voltage)
61
Actuator motor or motor relay
63
Solenoid valve relay
71
Control unit
ABS warning lamp stays on when
ignition switch is turned on.
Control unit power supply circuit
Warning lamp bulb circuit
Control unit or control unit connector
Solenoid valve relay stuck
Power supply for solenoid valve relay coil
ABS warning lamp stays on, during
self-diagnosis.
Control unit
—
ABS warning lamp does not come on
when ignition switch is turned on.
Fuse, warning lamp bulb or warning lamp circuit
Control unit
ABS warning lamp does not come on
during self-diagnosis.
Control unit
—
Pedal vibration and noise
—
Long stopping distance
—
Unexpected pedal action
—
ABS does not work.
—
ABS works frequently.
—
*: Under voltage that is too low, the control unit disable the ABS. It does not set the ABS in fail-safe condition. Instead, the ABS becomes
a conventional brake system. After the power supply has resumed, the warning lamp goes off, making it possible for the ABS to be
re-engaged.
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TROUBLE DIAGNOSIS — GENERAL DESCRIPTION
ABS
Malfunction Code/Symptom Chart
BR-61
Wheel Sensor or Rotor
NHBR0115
DIAGNOSTIC PROCEDURE
NHBR0115S01
Malfunction code No. 21, 22, 25, 26, 31, 32, 35, 36 or 18
NOTE:
Wheel position should be identified by code No. except code No.
18 (sensor rotor).
1
INSPECTION START
Wheel sensor inspection
SBR590EA
©
GO TO 2.
2
CHECK CONNECTOR
1. Disconnect connectors from control unit and wheel sensor of malfunction code No. Check terminals for damage or
loose connections. Then reconnect connectors.
2. Carry out self-diagnosis again.
Does warning lamp activate again?
Yes
©
GO TO 3.
No
©
INSPECTION END
TROUBLE DIAGNOSES FOR SELF-DIAGNOSTIC ITEMS
ABS
Wheel Sensor or Rotor
BR-62
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