brakes NISSAN GT-R 1998 Service Manual

ANTI-LOCK BRAKE SYSTEM
CONSULT (Cont'd)
DATA MONITOR MODE
MONITOR ITEM I CONDITION
FR RH SENSOR
FR
LH SENSOR
RR SENSOR Drive vehicle.
(Each wheel is rotating.)
STOP LAMP SW Turn
ignition switch ON and
depress brake pedal.
FR RH
IN SOL
FR RH OUT SOL
FR
LH IN SOL
FR LH OUT SOL
REAR IN SOL
REAR OUT SOL Ignition
switch is turned ON or
engine is running.
ACTUATOR RLY
MOTOR RLY
Ignition switch is turned ON or
engine is running.
WARNING LAMP
BATTERY VOLT
I
VOLTAGE Indicates
the voltage mea-
sured with a voltage probe.
PLS WIDTH-H
I
Refer to CONSULT Instruction
Manual.
NlSSAN
CONSULT
START I --
1 SUB MODE BR455C
$ SELECT SYSTEM 0-
ENGINE
A/T
I - ABS I
SPECIFICATION
Displays computed vehicle speed from wheel sensor signal.
Almost the same speed as speedometer.
Depress the pedal: ON
Release the pedal: OFF
EC ;
Operating conditions for each solenoid valve are indicated. ABS is AT '
not operating: OFF
Displays ON/OFF condition of ABS actuator relay.
When turning ignition switch ON,
ABS actuator relay
is operated. 2
ABS is not operating: OFF
ABS
is operating: ON
Warning lamp is turned on: ON
R8 $
Warning lamp is turned off: OFF
Power supply voltage for control unit
~~~~
ACTIVE TEST PROCEDURE
When conducting Active test, vehicle must be stationary.
Confirm that brakes have been bled completely.
When ABS warning lamp stays on, never conduct Active test.
Turn ignition switch OFF.
Connect CONSULT to Data Link Connector for CONSULT.
Start engine.
Touch "START' on CONSULT screen.
Touch
"ABS".

ANTI-LOCK BRAKE SYSTEM
Self-diagnosis (Cont'd)
MALFUNCTION CODEISYMPTOM CHART
Malfunction code No. Malfunctioning
part ABS warning
lamp
ON
Fail-safe
operation
18 1 Different number of teeth of sensor rotors 1010
2 1
26 I Front left wheel sensor (short-circuiQ.4 1010
- --
22
25
3 1 I Rear wheel sensor (open-circuit) 1010
Front right wheel sensor (open-circuit)
32 Rear wheel sensor (short-circuit)'4 1 0 1 0
Front right wheel sensor (short-circuit)'4
Front left wheel sensor (open-circuit)
41
I Front right outlet ABS solenoid valve and circuit 1010
0 0
0
0
0
0
- -
42
-- - -
46 Front left inlet ABS solenoid valve and circuit 0 1 0
45 Front
left outlet ABS solenoid valve and circuit
55
1 Rear outlet ABS solenoid valve and circuit 1010
Front right inlet ABS solenoid valve and circuit
56
1 Rear inlet ABS solenoid valve and circuit 1010
0
57 1 Power supply (Low or high voltage)*2 I 0 I -'I
0
0
0
I At self-diagno- ( ABS control unit or data link connector for CONSULT is poorly 1 I
61
63
At self-diagno-
I ABS control unit
sis only
ABS
actuator motor or motor relayg3
ABS
actuator relay
No indication
I I ABS control unit1ABS actuator relay is stuck to OFFJABS I Stays ON power supply circuit, ABS actuator relay drive side power sup-
lgnition switch
ply (coil side) circuit, and ABS warning lamp circuit are
short-
circuited./ABS control unit connector is disconnected or poorly
0
0
I
sis only
Ignition switch
ON
I I connected. I I
0
0
connected.
ABS control
unit1Fuse is blown or ABS warning lamp has an
open circuit.
- -- '1: Fail-safe operation does not activate. A signal from ABS control unit suspends ABS control operation. Brakes operate con-
ventionally. After specified power supply voltage resumes, ABS warning lamp goes out, allowing for ABS control operation. '2: The code No. does not indicate a malfunction related to the ABS control unit. Do not replace the ABS control unit even if the code No. appears. '3: The code No. can sometimes appear when the ABS motor ground circuit is loose or disconnected. When it appears, always
check the ground circuit for improper installation.
'4: ABS warning lamp turns on if a wheel or wheels spin for 10 to 80 seconds (depending on the wheel speed) with the vehicle
stuck in snow, ice, or mud. This is a normal condition. After repairing short-circuited sensor, turning ignition switch ON lights
up
ABS warning lamp. Check that ABS warning lamp turns off when the vehicle is driven at approx. 30 krnlh for approx. 1 minute as shown in the self-diagnosis procedure.

TCS/ABS SYSTEM
CONSULT for TCS/ABS Control Unit Control
CONSULT
START I
I I BR455D I SUB MODE
I SELECT SYSTEM
ENGINE
Arr
1 ABS I
I
[ $ SELECT DlAG MODE 01
SELF-DIAG RESULTS
DATA MONITOR
ACTIVE TEST
ECU
PART NUMBER
FR RH SOL TEST I
$ SELECT MONITOR ITEM
SELECTION FROM
MENU
u
START
System (Cont'd)
ACTIVE TEST PROCEDURE
When conducting Active test, vehicle must be stationary.
Confirm that brakes have been bled completely.
When ABS warning
lamp stays on, never conduct Active test.
Turn ignition switch OFF.
Connect CONSULT to Data Link Connector for CONSULT.
Start engine.
Touch "START' on CONSULT screen.
Touch
"ABS".
Touch "ACTIVE TEST'.
Select active test item by touching screen.
Touch "START'.

TCS/ABS SYSTEM
Self-diagnosis for TCSfABS Control Unit
Control System (Cont'd)
MALFUNCTION CODE/SYMPTOM CHART I I I
75, 'I:
'2: '3: '4:
'5:
Fail-safe operation is not activated. A signal from control unit suspends TCS and ABS control operation. Brakes operate
conventionally and the vehicle operates in the same manner as a vehicle without the TCS. After specified battery voltage
resumes, the TCS
OFF indicator lamp and the ABS warning lamp go off, allowing for TCS and ABS control operation.
TCS operation only stops and fail-safe operation is activated, allowing for ABS control operation.
Malfunction is detected only when TCS is in operation.
When there are malfunctions in the self-diagnostic check terminal circuit (terminal
4 of the data link connector for CONSULT)
and SLlP indicator lamp circuit, fail-safe operation is not activated.
Some malfunctions in the
TCS/ABS
control unit cause the SLlP indicator lamp and the
ABS warning lamp to go off sepa-
rately.
Malfunc-
tion code
No.
12
21 22
25
26
31
32
35
36
41
42
45
46
55
56
57
58
61
63
71
75
80
83
84
85
86
NO indi-
cation
(no blink-
ing)
NOTE:
When the
80, 83,
84, 85 or 86 is indicated, perform the self-diaqnosis for ECM-TCM or ECM.
Check
item
Normal
Front right wheel sensor (open-circuit)
Front right wheel sensor (short-circuit)
Front left wheel sensor (open-circuit)
Front left wheel sensor (short-circuit)
Rear right wheel sensor (open-circuit)
Rear right wheel sensor (short-circuit)
Rear left wheel sensor (open-circuit)
Rear left wheel sensor (short-circuit)
Front right outlet solenoid valve and circuit
Front right inlet solenoid valve and circuit
Front left outlet solenoid valve and circuit
Front left inlet solenoid valve and circuit
Rear outlet solenoid valve and circuit
Rear right inlet solenoid valve and circuit
Battery voltage (low)
Throttle control unit system or circuit for the corn-
munication
line between TCSIABS control unit
and
throttle control unit
Actuator motor and motor relay circuit
Actuator relay circuit
TCSIABS
control
unit
Total control signal (multiple signal) for engine,
IVT
and TCS/ABS
Engine speed signal
Monitoring of total control signal (multiple signal) for
engine,
AfT and TCS/ABS
Engine system component fuel condition
Incomplete start process of total control signal (mul-
tiple signal) for engine,
AfT and TCSIABS
Continuous start process of total control signal
(multiple signal) for engine, and
TCS/ABS
Remains OFF: Data link connector circuit
Remains ON: SLIP indicator lamp circuit shorted,
TCSIABS
control unit or self-diagnostic check termi-
nal circuit open
malfunction code No. 58 is indicated, perform the Detection
Engine
running
-
0 -
0
-
0 -
0 -
0
0
0
0
0
0
0
0
0
0
0
0
-
0
0
0
0
0
0
throttle control time
In driving
-
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0 -
0'3
0
0
0
0
0
0
unit
a Fail-safe
operation
-
0
0
0
0
0
0
0
0
0
0
0
0
0
0
-'I
0
0
0
0
0
0
0
0
0
0
-'4
-'4
code Nos.
ABS
-
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
-*2
0
0
05
-
-
-
-
-
-
-
0
self-diagnosis. Lamp
ON
TCS OFF
-
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
-
0
When the SLlP
-
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0'5
0
0
0
0
0
0
-
0
malfunction