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Modify R34 GTR MFD display for video input This document will
explain how to modify an R34 GTR MFD display so that it can display
an external NTSC video signal. This modification is only for MFD
with a ‘TV’ button.
Or you can just buy the plug and play lead from Clarion Part NO.
855-5430-00
Pin funtions to ecu white block brown block 1 2 3 4 5 * * 6 7 8
9 10 11 25 26 27 28 29 * * 30 31 32 33 34 35 12 13 14 15 16 17 18
19 20 21 22 23 24 36 37 38 39 40 41 42 43 44 45 46 47 48 1 BATT
(12V regular power source) 25 Approximately G sensor 2 BATT (12V
regular power source) 26 Side G sensor 3 ACC power source 27 Front
torque sensor GND 4 TV- (ground of seal) 28 Position of a vessel's
helm se 5 TV-SYNC 29 Position of a vessel's helm se 6 SCI sealed
ground 30 Speed sensor 7 VP 31 Water temperature sensor 8 HP 32 Oil
temperature sensor 9 RGB- (ground of seal)* 2 33 Boost sensor (from
3 connected meters) 10 RGB-SYNC* 2 34 Light/write switch ( ACC ) 11
R*2 35 Throttle opening signal 12 IGN signal 36 Sensor GND (inside
MFD N.C.) 13 GND 37 Sensor GND (inside MFD N.C.) 14 GND 38 Front
torque ( from 3 connected meters) 15 TV+ 39 Position of a vessel's
helm se 16 VTR- (ground of seal) * 1 40 Yaw rate 17 VTR+* 1 41
Sensor GND (inside MFD N.C.) 18 N.C. (NO CONNECTION) 42 Sensor GND
(inside MFD N.C.) 19 DISP-NAVI 43 STOP lamp switch 20 NAVI-DISP 44
The hydraulic sensor 21 YS 45 Exhaust warm Sensor 22 G* 2 46
Inhalation warm sensor 23 B* 2 47 Injector injection signal 24 OP
NAVI Presence 48Tachometer Drive signal
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Stage 1 – Fit socket The first stage is to fit an RCA socket as
shown below. This can be purchased from any electronics store as a
part. The I used was threaded so that I was able to use nuts on
either side to lock it in place. This saved any soldering and
allowed me to add and remove Whilst fitting. The one pictured is a
solder in unit. Either is OK.
Stage 2 - Solder cable onto socket and board Once you have
fitted the socket to the casing, you must attach some coaxial cable
to the inner and outer connectors of the socket. The other end of
the cable must be attached as shown below. Outer of the cable to
ground, inner of cable to NTSC in
Stage 3 - Disable Japanese display message Once you have
completed stage 2, your display should now be showing the NTSC
signal, however the MFD is unaware of the signal and so displays a
message in Japanese essentially complaining of no signal. Soldering
between the link shown below disables this message, allowing you to
display your video cleanly.
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MFD functions
The MFD will not allow you to make changes while road speed is
above about 20km/hr, but you can do so once speed drops below about
5km/hr. This mode allows you to see the values for all available
sensors. GTR MFD’s show; • boost, • throttle, • injector duty
cycle, • oil temperature • water temperature, Vspec and UK cars
MFD’s show;
• boost, • throttle, • injector duty cycle, • oil temperature •
water temperature • exhaust temperature • intercooler temperature.
Nismo offer an upgrade (MFD 2) which offers a higher max boost
reading, some additional gauges, a longer memory (with downloadable
data via RS232), and lap timer. • The white line on the bar graph
during mode 1 is a peak hold that will show the highest value
achieved (reset this by pushing the joystick button in). • The
oil and water temperature values will only register ---C until the
temp is up to 70C, then they
show current temp.
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DISP takes you into a menu to set brightness, auto-dimming,
gauge peak tracking, and to turn the display off.
RETURN has many similar functions to mode button, but only
toggles 2 modes MENU takes you to the options available for that
mode
MODE cycles you through the available modes (multiple sensors,
dual virtual gauges, single gauge with memory)
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Mode 1 - Multiple sensors Pressing the MENU button when in mode
1 allows you to see the option screen again, with only the red zone
and rev light options available. Use the joystick to navigate left
or right to the RED ZONE option and press the joystick again to
bring up the red zone screen. This lets you set warning points for
each monitored sensor.
To set the warning points, use the joystick to navigate up and
down the sensors (the current selected one is highlighted in yellow
as on the screen shot), then push the joystick left or right to
change the levels to higher or lower values. Once finished, use the
joystick to highlight the END button and push the joystick again.
This setting only has an effect when you exceed the set point for
any sensor as once exceeded the screen will switch back to Mode 1
from any other screen, and highlight which sensor went over the
limit.
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Mode 2 - Dual virtual gauges This mode lets you monitor any 2
gauges simultaneously (1 is permanently stored in RAM, the other 3
are use selectable). If you disconnect the battery or pull the
fuse, you will find only the default pair available.
While in this mode, pushing menu will take you to the options
available (gauge selection, and shift light setting). To change
gauges seen, navigate left or right to gauge selection with the
joystick, then select it by pushing the joystick button in.
From the screen you can use the joystick to navigate to a
preferred pair of gauges. If you have reset your MFD (via
diagnostics or disconnected battery) twin 2 to 4 will be blank and
programmable. To programme you own combination of gauges, use the
joystick to navigate to the button on the lower left of the screen
and click the joystick
This takes you to another screen that lets you select the gauges
to monitor, which side of the pair they are on, and what twin
number they are. Use the joystick to scroll to the pair to edit (it
is then highlighted with a yellow border as shown), then click the
joystick to enter edit mode.
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The screen changes to show the available gauges, and a green
block appears in whichever side has been chosen (left or right).
Select the left or right side with the joystick first, and click to
edit. Next select the gauge for that side with the joystick, and
click to enter. Repeat this for the other side, and other twin
pairings.
Mode 3 - Gauge plus memory This mode lets you see 1 gauge and
the last 30 secs of data from that sensor, with a peak hold
function and peak value displayed in the blue segment (this does
not apply to the throttle position sensor shown)
Pushing menu while in mode 3 lets you navigate to the gauge
select screen, which lets you nominate which single gauge, should
be displayed.
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Display button Pushing the display button lets you change some
of the options
Use the joystick to navigate to the option desired, and then
push the button in to toggle the options. • Auto-dimming means the
screen brightness changes when your headlights are on. • MFD screen
when toggled turns the whole unit off (for optimum night vision?) •
Gauge tail when toggled on, shows a green “tail” behind the red
gauge pointer. • Screen brightness lets you increase or decrease
the screen brightness Shift up option
Using the joystick button, you can increase or decrease the revs
set point that the MFD shift light LED flashes at.
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Hidden options The following were all found on the net so
apologies for not referencing the appropriate people. Calibration
of throttle position sensor 1) Turn the key to the "OFF" position
2) Press and hold "RETURN" and "MODE" switches on the MFD at the
same time. 3) Turn the key to the "ON" position while still holding
down the "RETURN" and "MODE" switches 4) When the opening screen
with the"GT-R logo" appears, release the "RETURN" and "MODE"
switches, and click the joystick 5 times within the next 3 seconds.
5) Set the throttle gauge calibration on screen as below.
Diagnostic mode 1) Turn the key to the "OFF" position 2) Push
and hold the joystick 3) Turn the key to the "ON" position while
still holding down the joystick 4) Release the joystick at least 1
second after the "GT-R logo" appears. 5) Click the joystick 5 times
within the next 3 seconds. This will show which sensors are
functioning and have readings.
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How to for R34 GTT
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ECU pinouts for R34 GTT
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ECU pinouts for all R32’s and R33’s
Terminal Number Description
Terminal Number Description
1 Ignition signal (power transistor) Cyl. No. 1 11 Ignition
signal (power transistor) Cyl. No. 6 2 Ignition signal (power
transistor) Cyl. No. 5 12 Ignition signal (power transistor) Cyl.
No. 2
3 Ignition signal (power transistor) Cyl. No. 3 13 Ignition
signal (power transistor) Cyl. No. 4 4 AAC Valve 14 --
5 -- 15 --
6 Sub electrical fan relay (engine temperature switch) 16 ECCS
relay
7 Tachometer speed signal 17 -- 8 -- 18 Fuel pump relay
9 Air conditioner relay (air conditioner cut signal) 19 Power
steering oil pressure switch 10 Ground (ignition signal system) 20
Ground (ignition signal system)
21 (RX) Receive (control unit data reception) 31 (CLK) Clock
(synchronization signal) 22 (TX) Transmit (data sent from control
unit) 32 Monitor and check lamp (red)
23 Detonation sensor 1 (cyl 1 to 3) 33 --
24 Detonation sensor 2 (cyl 4 to 6) 34 Air flow meter ground
25 Wastegate valve control solenoid valve 35 Air flow meter
intake air quantity signal (front) 26 Air flow meter ground 36
Intake air temperature sensor
27 Air flow meter intake air quantity signal (rear) 37 --
28 Engine temperature sensor 38 Throttle opening output
29 Exhaust gas sensor (front) 39 --
30 Sensor ground (throttle sensor, engine temperature sensor) 40
--
41 Crank angle sensor (120 degree signal) 51 Crank angle sensor
(120 degree signal)
42 Crank angle sensor (1 degree signal) 52 Crank angle sensor (1
degree signal) 43 Ignition switch START signal 53 Vehicle speed
sensor
44 Neutral switch 54 Throttle valve switch (idle connection
point) 45 (IGN) Ignition switch (IGN) 55 Exhaust gas sensor
(Rear)
46 Air conditioner switch 56 Throttle sensor output signal
47 (CHK) Check (diagnosis activation) 57 --
48 Throttle sensor power supply supply 58 Battery power
supply
49 Control unit power supply 59 Control unit power supply
50 Ground (control unit) 60 ( - ) Ground (control unit)
101 Injector No. 1 109 Injector power supply (counter
electromotive reflex circuit)
102 -- 110 Injector No. 5
103 Injector No. 3 111 --
104 Fuel pump terminal voltage control ouput (FPCM) 1 112
Injector No. 6
105 Injector No. 2 113 --
106 Fuel pump terminal voltage control output (FPCM) 2 114
Injectore No. 4
107 Injector ground 115 --
108 Injector ground 116 Injector ground
101 102 103 104 105 106 107 108 1 2 3 4 5 6 7 8 9 10
21 22 23 24 25 26 27 28 29 30
41 42 43 44 45 46 47 48 49 50
109 110 111 112 113 114 115 116 11 12 13 14 15 16 17 18 19
20
31 32 33 34 35 36 37 38 39 40
51 52 53 54 55 56 57 58 59 60
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MFD pin funtions white block brown block 1 2 3 4 5 * * 6 7 8 9
10 11 25 26 27 28 29 * * 30 31 32 33 34 35 12 13 14 15 16 17 18 19
20 21 22 23 24 36 37 38 39 40 41 42 43 44 45 46 47 48
1 BATT (12V regular power source) 25 Approximately G sensor 2
BATT (12V regular power source) 26 Side G sensor 3 ACC power source
27 Front torque sensor GND 4 TV- (ground of seal) 28 Position of a
vessel's helm se 5 TV-SYNC 29 Position of a vessel's helm se 6 SCI
sealed ground 30 Speed sensor 7 VP 31 Water temperature sensor 8 HP
32 Oil temperature sensor 9 RGB- (ground of seal)* 2 33 Boost
sensor (from 3 connected meters) 10 RGB-SYNC* 2 34 Light/write
switch ( ACC ) 11 R*2 35 Throttle opening signal 12 IGN signal 36
Sensor GND (inside MFD N.C.) 13 GND 37 Sensor GND (inside MFD N.C.)
14 GND 38 Front torque ( from 3 connected meters) 15 TV+ 39
Position of a vessel's helm se 16 VTR- (ground of seal) * 1 40 Yaw
rate 17 VTR+* 1 41 Sensor GND (inside MFD N.C.) 18 N.C. (NO
CONNECTION) 42 Sensor GND (inside MFD N.C.) 19 DISP-NAVI 43 STOP
lamp switch 20 NAVI-DISP 44 The hydraulic sensor 21 YS 45 Exhaust
warm Sensor 22 G* 2 46 Inhalation warm sensor 23 B* 2 47 Injector
injection signal 24 OP NAVI Presence 48Tachometer Drive signa
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