Nissan Silvia. Manual — part 92
4
CHECK BRAKE BOOSTER OPERATION
Check brake booster for operation and air tightness.
Refer to “On-vehicle Service”, “BRAKE BOOSTER”, BR-17.
SBR058C
Is brake booster airtight and functioning properly?
Yes
©
GO TO 5.
No
©
Replace. GO TO 5.
5
CHECK BRAKE PAD AND ROTOR
Check brake pad and rotor.
Refer to (BR-7).
SBR059C
Are brake pads and rotors functioning properly?
Yes
©
GO TO 6.
No
©
Replace.
GI
MA
EM
LC
EC
FE
CL
MT
AT
PD
AX
SU
ST
RS
BT
HA
SC
EL
IDX
TROUBLE DIAGNOSIS — BASIC INSPECTION
ABS
Preliminary Check (Cont’d)
BR-51
6
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?
Yes
©
GO TO 7.
No
©
Fill up brake fluid.
7
CHECK WARNING LAMP ACTIVATION
Check warning lamp activation.
SBR803E
Does warning lamp turn on when ignition switch is turned ON?
Yes
©
GO TO 8.
No
©
Check fuse, warning lamp bulb and warning lamp circuit.
8
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 9.
No
©
Go to Self-diagnosis (BR-44).
9
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
©
INSPECTION END
No
©
Go to Self-diagnosis (BR-44).
TROUBLE DIAGNOSIS — BASIC INSPECTION
ABS
Preliminary Check (Cont’d)
BR-52
SBR804E
Ground Circuit Check
=NMBR0102
ABS CONTROL UNIT GROUND
NMBR0102S01
I
Check continuity between ABS control unit connector terminals
26 (B), 28 (B), 30 (B), 32 (B) and ground.
Continuity should exist.
SBR805E
ABS ACTUATOR GROUND
NMBR0102S04
I
Check resistance between actuator harness 8-pin connector
(body side) terminal 21 (B) and ground.
Resistance: approximately 0
Ω
GI
MA
EM
LC
EC
FE
CL
MT
AT
PD
AX
SU
ST
RS
BT
HA
SC
EL
IDX
TROUBLE DIAGNOSIS — BASIC INSPECTION
ABS
Ground Circuit Check
BR-53
Wheel Sensor or Rotor
DIAGNOSTIC PROCEDURE 1
NMBR0104
NOTE:
Wheel position should be distinguished by code No. except code
No. 18 (sensor rotor).
1
INSPECTION START
Wheel sensor inspection
SBR806E
©
GO TO 2.
2
CHECK CONNECTOR
1. Disconnect connectors from ABS control unit and wheel sensor of malfunction code No. Check terminals for damage or
loose connection. Then reconnect connectors.
2. Carry out self-diagnosis again.
Does warning lamp activate again?
Yes
©
GO TO 3.
No
©
INSPECTION END
3
CHECK WHEEL SENSOR ELECTRICAL
1. Disconnect ABS control unit connector.
2. Check resistance between ABS control unit connector F7 (body side) terminals.
Code No. 21 or 22 (Front RH wheel)
Terminals 8 (PU) and 19 (LG/R)
Code No. 25 or 26 (Front LH wheel)
Terminals 6 (G) and 18 (P/L)
Code No. 31 or 32 (Rear wheel)
Terminals 5 (W/G) and 17 (BR/R)
SBR807E
Resistance:
0.6 - 3.25 k
Ω
Is resistance 0.6 - 3.25 k
Ω
?
Yes
©
GO TO 5.
No
©
GO TO 4.
TROUBLE DIAGNOSES FOR SELF-DIAGNOSTIC ITEMS
ABS
Wheel Sensor or Rotor
BR-54
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