Infiniti F50. Manual — part 291
COMBINATION METERS
DI-7
C
D
E
F
G
H
I
J
L
M
A
B
DI
COMBINATION METERS
PFP:24814
System Description
EKS000ZT
UNIFIED CONTROL METER
●
Speedometer, odo/trip meter, tachometer, fuel gauge and water temperature gauge are controlled totally
by control unit built in combination meter.
●
Digital meter is adopted for odo/trip meter.*
*The record of the odo meter is kept even if the battery cable is disconnected. The record of the trip meter
is erased when the battery cable is disconnected.
●
Odo/trip meter, A/T indicator and ICC system display segments can be checked in self-diagnosis mode.
●
Meter/gauge can be checked in self-diagnosis mode.
HOW TO CHANGE THE DISPLAY FOR ODO/TRIP METER
●
The CAN communication signals (vehicle speed signal) from VDC/TCS/ABS control unit, and the memory
signals from the meter memory circuit are processed by the combination meter, and the mileage is dis-
played.
●
Operating the odometer/trip switch allows switching the mode in the following order.
●
The odo/trip meter display switching and trip display resetting can be identified by the time from pressing
the odo/trip meter switch to releasing it.
●
When resetting with trip A displayed, only trip A display is reset (same as trip B).
POWER SUPPLY AND GROUND CIRCUIT
Power is supplied at all times
●
through 10A fuse [No. 6, located in the fuse block (J/B) No. 1]
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to combination meter terminal 57.
With the ignition switch in the ON or START position, power is supplied
●
through 10A fuse [No. 9, located in the fuse block (J/B) No. 1]
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to combination meter terminal 59.
With the ignition switch in the ACC or ON position, power is supplied
●
through 10A fuse [No. 21, located in the fuse block (J/B) No. 1]
●
to combination meter terminal 1.
Ground is supplied
●
to combination meter terminal 60 and 61
●
through grounds M24 and M114.
SEL175W
DI-8
COMBINATION METERS
WATER TEMPERATURE GAUGE
The water temperature gauge indicates the engine coolant temperature.
ECM provides an engine coolant temperature signal to combination meter for water temperature gauge with
CAN communication line.
TACHOMETER
The tachometer indicates engine speed in revolution per minutes (rpm).
ECM provides an engine speed signal to combination meter for tachometer with CAN communication line.
FUEL GAUGE
The fuel gauge indicates the approximate fuel level in the fuel tank.
The fuel gauge is regulated by a variable resistor signal supplied
●
to combination meter terminal 30 for the fuel level sensor
●
from terminal 5 of the fuel level sensor unit
●
through terminal 6 of the fuel level sensor unit and
●
through combination meter terminal 29
SPEEDOMETER
VDC/TCS/ABS control unit provides a vehicle speed signal to the combination meter for the speedometer with
CAN communication line.
COMBINATION METERS
DI-9
C
D
E
F
G
H
I
J
L
M
A
B
DI
CAN Communication
EKS007AA
SYSTEM DESCRIPTION
CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle mul-
tiplex communication line with high data communication speed and excellent error detection ability. Many elec-
tronic control units are equipped onto a vehicle, and each control unit shares information and links with other
control units during operation (not independent). In CAN communication, control units are connected with 2
communication lines (CAN H line, CAN L line) allowing a high rate of information transmission with less wiring.
Each control unit transmits/receives data but selectively reads required data only.
FOR VDC MODELS
System Diagram
Input/Output Signal Chart
T: Transmit R: Receive
PBIB0124E
Signals
TCM
Combination
meter
Steering wheel
angle sensor
VDC / TCS /
ABS control
unit
ECM
Engine speed signal
R
R
R
T
Engine coolant temperature signal
R
R
T
Accelerator pedal position signal
R
R
T
Engine torque signal
R
R
T
Battery voltage signal
R
T
Closed throttle position signal
R
T
Wide-open throttle position signal
R
T
Lock-up prohibition signal
R
T
Torque-down permission signal
R
T
Fuel consumption monitor signal
R
T
Lock-up signal
T
R
Hard deceleration signal
T
R
Torque-down signal
T
R
Power mode indicator signal
T
R
ATF temperature warning lamp signal
T
R
R
Current gear position signal
T
R
R
R
R
T
Next gear position signal
T
R
R
Shift change signal
T
R
R
Shift pattern signal
T
R
VDC system control signal
T
R
VDC operation signal
T
R
Stop lamp switch signal
R
T
Steering wheel angle sensor signal
R
T
R
R
DI-10
COMBINATION METERS
FOR ICC MODELS
System Diagram
Input/Output Signal Chart
T: Transmit R: Receive
A/C switch signal
T
R
Headlamp switch signal
T
R
Rear window defogger switch signal
T
R
OD cancel switch signal
R
T
R
Brake switch signal
R
T
Power mode switch signal
R
T
Vehicle speed signal
R
R
T
R
T
R
T
R
Signals
TCM
Combination
meter
Steering wheel
angle sensor
VDC / TCS /
ABS control
unit
ECM
SKIA1241E
Signals
TCM
Combina-
tion meter
Steering
wheel
angle
sensor
ICC unit
ICC sen-
sor
VDC /
TCS /
ABS con-
trol unit
ECM
ICC system display signal
R
T
ICC sensor signal
R
T
Engine speed signal
R
R
R
R
T
Engine coolant temperature signal
R
R
T
Accelerator pedal position signal
R
R
T
Engine torque signal
R
R
T
Battery voltage signal
R
T
Closed throttle position signal
R
R
T
Lock-up prohibition signal
R
T
Torque-down permission signal
R
T
Fuel consumption monitor signal
R
T
Lock-up signal
T
R
Hard deceleration signal
T
R
Torque-down signal
T
R
Power mode indicator signal
T
R
ATF temperature warning lamp signal
T
R
R
Current gear position signal
T
R
R
R
R
T
Next gear position signal
T
R
R
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