1998 NISSAN GT-R display

ANTI-LOCK BRAKE SYSTEM
CONSULT (Cont'd) - -
Diagnostic item
CONTROL UNIT --
BAnERY "OLTAGE
[VB-HIGH]
"OLTAGE
[VB- LO
W]
Function of calculation in ABS control unit has failed.
Diagnostic
item is detected when
...
Control unit,
control
unit
power supply
and ground
circuit
Check item
ABS control unit battery voltage
is abnormally high.
ABS control unit battery voltage is abnormally low.
. ABS MOTOR
[LOCK FAILURE] Control
unit
power supply
circuit ABS motor speed is abnormally low. AES motor,
motor relay
and circuit
1 I
'1 : ABS warning lamp turns on if a wheel or wheels spin for I0 to 80 seconds (depending on the wheel speed) with the vehicle
stuck in snow. ice, or mud. This is a normal condition.
'2: 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 krnh for approx. 1 minute as shown in the self-diagnosis procedure. NOTE: If "ABSn is not displayed on "SELECT SYSTEM" screen, check ABS control unit and data link connector circuit, and make sure
of the CONSULT card number.
DATA MONITOR PROCEDURE
Refer to CONSULT Instruction Manual for details on data
monitor function.
1. Turn ignition switch OFF.
2. Connect CONSULT connector to data link connector for CON-
SULT.
3. Turn ignition switch ON.
4. Touch "START' on CONSULT screen.
5. Touch "ABS" on CONSULT screen.
If "START" is touched immediately after engine is started
or ignition switch is turned on,
"ABS" may not be dis-
played on "SELECT SYSTEM" screen. To display "ABS",
repeat the data monitor procedure from the beginning.
6. Touch "DATA MONITORn.
7. Touch "SETTING" to set recording condition.
8. Touch "AUTO TRIG", "LONG TIME" and then "ENTER".
9. Return to "SELECT MONITOR ITEM" screen and touch "CIU
INPUT ITEM", "ALL SIGNALS" or 'SELECTION FROM
MENU". Refer to "DATA MONITOR MODE" on the next page.
10. Touch "START'.
11. Display data monitor.
12. If necessary, sequentially touch "REC START, "REC STOP",
"DATA DISPLAY", "NUMBER PRINT' and "PRINT' to print out
the data.

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
CONSULT (Cont'd)
I b~ SELECT DiAG MODE 01 r SELF-DIAG RESULTS
DATA MONITOR
ACTIVE TEST
ECU
PART NUMBER I
FR RH SOL TEST
I 1 !!! SELECT MONITOR ITEM I I
I I SELECTION FROM MENU I I
I I START 1
6. Touch "ACTIVE TEST'.
7. Select active test item by touching screen.
8. Touch "START'.
9. "ACTIVE TEST" screen is displayed.
ABS solenoid valve
To check that ABS solenoid valves (inlet and outlet) operate in
the following manner, touch
"UP*, "KEEP" and "DOWN" on the
screen while observing the monitor.
Operation I UP I KEEP ( DOWN
IN ABS SN I OFF 1 ON I ON
OUTABS SN I OFF I OFF I ON*
*: Solenoid valve stays ON for 1 to 2 seconds after touching the key, and then
turns OFF.
If the active test is conducted with brake pedal depressed, the
brake pedal travel limit may change. This is a normal condition.
"TEST IS STOPPED" message is displayed 10 seconds after
the operation is started.
If the active test needs to be performed again after "TEST IS
STOPPED" is displayed, repeat step 8.

ANTI-LOCK BRAKE SYSTEM
CONSULT (Cont'd)
r I I ABS motor / a UCTIl..!E TEST fj I I Touch "ON" and "OFF on the screen to check that ABS motor - - - - -. . -
relay and ABS actuator relay operate as follows:
- - - - -- --
Operation
ABS actuator relay
brake pedal travel limit may change. This is a normal condition.
"TEST IS
STOPPED" message is displayed 10 seconds after
ABS motor relay I ON
1 the operation is started.
I
ON
ON
OFF OFF G9
ON
EG
If the active test is conducted with brake pedal depressed, the

TCSlABS SYSTEM
Control Unit InputfOutput Signal Specifications
(Cont'd)
USING CONSULT
Indicated are the controi unit computed data. If the output circuit (harness) should be open or short-
circuited, correct values may be displayed.
TCS/ABS control unit
Display
I Vehicle is stationary.
REVOLUTION SENSOR
W/hI
STOP LAMP SW [ON-OFF] Check
item (Reference)
Data monitor
the
same 'peed Wheel sensor circuit
as speedometer (within
~onttor
ltem
Wheel
speed'l
Vehicle is
driven.'l
Condition
Brake pedal is
Brake pedal is not
depressed.
Engine is stopped.
Engine is running at
more than
400 rpm.
Actuator (solenoid) is
activated (at CONSULT Specifications
Brake pedal status
-1 Engine speed signal cir-
cuit
ENG
RPM SIGNAL
[STOP-RUN] Engine operation
active test), or actuator
relay is not activated
(with fail-safe function
activated and engine not
running). Solenoid circuit
IN
ABS SOLENOID
[ON-OFF]
Solenoid status Actuator (solenoid) is
not
activated and actuator
relay
is activated (with
vehicle stopped and
engine running).
OUT
ABS SOLENOID
[ON-OFF] OFF
Actuator relay is acti-
vated (with engine run-
ning).
ABS ACTUATOR RELAY
[ON-OFF]
- Actuator relay and circuit
Actuator
relay status
Actuator relay is not acti-
vated (with fail-safe
function activated and
engine not running).
Motor relay and motor
are activated (at CON-
SULT active test).
Motor relay and motor
are not activated. OFF
I ABS
motor, motor relay
ABS MOTOR
RELAY
[ON-OFF]
Motor
relay
and motor
status
OFF and circuit
ABS warning lamp cir-
cuit
Controi unit power
sup-
WARNING LAMP
[ON-OFF]
4BS
warning lamp
sta-
:us'2
Warning lamp ON Warning lamp OFF
'ewer supply voltage
~rovided for control unit
BATERY
BOLT [V] Ignition switch ON
Acceleration pedal is not
depressed. (Ignition
switch
ON)
10 - 16V
I
Communication line cir-
cuit between TCS/ABS
control unit and throttle
I - 10096 control unit ply circuit and ground
circuit
rhrottle
angle condition
linked with acceleration
~edal)
THRTL OPENING
[%]
Acceleration pedal is
depressed. (Ignition
switch ON)

TCS/ABS SYSTEM
Control Unit Input/Output Signal Specifications
(Cont'd)
THRTL OPENING TAR-
GET
[%]
Display Monitor item
Motor throttle angle con-
dition
TCS
MODET3
TCS OFF LAMP Data monitor I Condition
Specifications
TCS is inoperative.
TCS is operational.
Communication line
cir-
TCS is inoperative.
Number of cylinders to cuit between
TCS/ABS
which fuel is cut off control unit and
I.z /LT TCS is operational.
ECM-TCM or ECM
GEAR
TCS
SW
TCS OFF indicator lamp
TCS OFF indicator lamp
status
1 1 lEi3FF indicator amp
TCS OFF indicator lamp
@
Check item (Reference)
SLlP LAMP
0%
0 - 100%
Gear selection
TCS OFF switch status (ONIOFF)
P/N POSITION SIGNAL Communication line cir-
@
cuit
between TCSIABS
control unit and throttle
control unit
lzc
SLlP indicator lamp is / ow
TCS OFF switch circuit ST
I
1: 1st gear 2: 2nd gear 3: 3rd gear
4: 4th gear 5: 5th gear
SLIP
indicator lamp
sta-
cuit
TCS switch ON
TCS switch OFF
PNP switch signal or
neutral position switch
signal status (ONIOFF) ON
OFF
SLlP indicator lamp is
ON.
( A/T selector position: I I
I %~hift position: I ON
ON
SLIP indicator lamp cir-
1 Other than Neutral I 1
Neutral
A/T selector position:
Other than N and P
MA' shift position:
A/T PNP switch or neu-
tral position switch circuit
OFF
'1: Tire pressure must be in accordance with specification.
'2: ABS warning lamp ON: When the ignition switch is turned ON (before starting the engine) or a malfunction is detected ABS warning lamp OFF: When the engine has started (with the system in normal condition) '3: TCS mode: 0 - 24, number of cylinders to which fuel is cut off x 4
Throttle control unit
THRTL POS SEN
Display
TH MOTOR VOLT Monitor item I Sensor
voltage (V)
Sensor voltage
(V)
Throttle valve is fully
I Approx. 0.5V closed.
Engine is idling.
I
Data monitor
Approx. 3.4V
Condition
TH OPEN CONT Specifications
Motor throttle target
angle signal (ms)
NEUT
POSl
SW
START
SIGNAL
ONIOFF TCS
is inoperative
Shift (selector) lever is in
parkheutral
position. Approx.
9 ms Check
item (Reference)
ON
1
Throttle position sensor
circuit
ONIOFF Throttle motor sensor
circuit
Communication line cir-
cuit between
TCS/ABS
control unit and throttle
control unit
Start signal circuit
ParWneutral position
switch circuit
Ignition switch
ON
I

TCS/ABS SYSTEM
CONSULT for TCS/ABS Control Unit Control
System
CONTROL UNIT PART NUMBER
The part number that is shown on the control unit label and CON-
SULT
A/T model: 47850 AA310
M/T model: 47850 AA110
SELF-DIAGNOSIS PROCEDURE rn
Collect information on the concern from the customer, and then
perform basic inspections.
Turn ignition switch OFF and connect CONSULT connector to
data link connector for CONSULT on the vehicle.
ST
Start engine and drive vehicle at approx. 30 km/h for approx.
1 minute.
Stop vehicle with engine running and touch "START", "ABS"
38
and "SELF-DIAG RESULTS" sequentially on the CONSULT
screen.
If "START" is touched immediately after engine is started y;rjn
or ignition switch is turned on, "ABS" may not be dis-
played on "SELECT SYSTEM" screen. To display "ABS", E~
repeat the self-diagnosis procedure from the beginning.
Self-diagnosis results are displayed on the screen. (Touch
"PRINT' to print out the self-diagnosis results,
if necessary.) 8~ If "NO FAIL" is displayed, inspect the SLlP indicator lamp, the
TCS OFF indicator lamp and the ABS warning lamp. Refer to
the previous page.
Perform appropriate inspection from the self-diagnostic results
mode and repair or replace faulty parts.
Start engine and drive vehicle at approx.
30 km/h for approx.
1 minute.
Recheck to ensure that there is no other malfunction.
Turn ignition switch OFF to prepare for erasing the trouble
stored in memory.
Start engine and touch "START",
"ABS", "SELF-DIAG
RESULTS" and "ERASE" sequentially on the CONSULT
screen to erase the trouble stored in memory.
If the trouble stored in memory is not erased, repeat step
6.
Drive vehicle at approx. 30 krn/h for approx. 1 minute and then
confirm that the TCS OFF indicator lamp, the
SLlP indicator
lamp, and the ABS warning lamp are OFF.
TCS OFF switch is not in cancel condition.

TCSfABS SYSTEM
CONSULT for
TCSfABS Control
Unit Control
System (Cont'd)
Diagnostic item
LAN CIRCUIT
1
LAN CIRCUIT 2
Diagnostic item is detected when ... I Check item
NOTE:
If "NO FAILn is displayed as a result of the CONSULT self-diagnosis when the ABS warning lamp is lit, inspect the engine speed
signal circuit.
If "ABSn is not displayed on "SELECT SYSTEM" screen, check ABS control unit and data link connector circuit, and make sure of the CONSULT card number. If "ENGINE SYSTEM", "LAN SIGNAL 1". "LAN SIGNAL 2", "LAN SIGNAL 3, "LAN CIRCUIT 1" or "LAN CIRCUIT 2" is displayed
on the screen, perform the self-diagnosis for the
ECM.TCM
or ECM.
If "THROlTLE CONTROLLER COMMUNICATIONn is displayed on the screen, perform the self-diagnosis for throttle control unit.
Total control signal (multiple signal) for engine, All and TCSIABS is abnormal (open or
shorted communication harness,-faulty connections, abnormal TCSIABS control unit or
ECM.TCM
or ECM).
ECM.TCM
or ECM power is cut
off or decreased for 2 seconds or longer.
Total control signal (multiple signal) for engine,
ArT and TCSIABS is suspected to be
interrupted (open or shorted communication harness, faulty connections, abnormal
TCS/ABS
control unit or ECM TCM or ECM).
ECM.TCM or ECM power is cut off or decreased for 2 seconds or longer.
DATA
a
1.
2.
3.
4.
5.
a
signal 1, 2
(multiple sig-
nal) for
and
TCSI
ABS
MONITOR PROCEDURE
Refer to CONSULT Instruction Manual for details on data
monitor function.
Turn ignition switch OFF.
Connect CONSULT connector to data link connector for
CON-
SU LT.
Turn ignition switch
ON.
Touch "START" on CONSULT screen.
Touch "ABS" on CONSULT screen.
If "START" is touched immediately after engine is started
or ignition switch is turned ON, "ABS" may not be dis-
played on "SELECT SYSTEM" screen. To display "ABS",
repeat the data monitor procedure from the beginning.
Touch "DATA MONITOR".
Touch "SETTING" to set recording condition.
Touch "AUTO TRIG", "LONG TIME" and then
"ENTER".
Return to "SELECT MONITOR ITEM" screen and touch "C/U
INPUT ITEM",
"ALL SIGNALS" or "SELECTION FROM
MENU". Refer to "DATA MONITOR MODE" on the next page.
10. Touch "START".
11. Display data monitor.
12. If necessary, sequentially touch "REC START, "REC STOP",
"DATA DISPLAY", "NUMBER PRINT" and "PRINT" to print out
the data.