Infiniti FX35, FX50 (S51). Manual - part 1382

MWI

DIAGNOSIS SYSTEM (UNIFIED METER AND A/C AMP.)

MWI-47

< SYSTEM DESCRIPTION >

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E-SUS IND
[On/Off] 

Status of sports mode indicator lamp judged from sports mode indicator lamp sig-
nal received from E-SUS control unit with CAN communication line.

DCA IND
[On/Off] 

Status of DCA switch indicator judged from meter display signal received from ICC 
sensor integrated unit with CAN communication line.

LCD
[B&P N, B&P I, ID NG, ROTAT, SFT 
P, INSRT, BATT, NO KY,OUTKY, LK 
WN]

Displays status of Intelligent Key system warning judged from meter display signal 
received from BCM with CAN communication line.

ACC TARGET
[On/Off]

Status of vehicle ahead detection indicator judged from meter display signal re-
ceived from ICC sensor integrated unit with CAN communication line.

ACC DISTANCE
[Off, SHOR, MID, LONG]

Status of set distance indicator judged from meter display signal received from 
ICC sensor integrated unit with CAN communication line.

ACC OWN VHL
[On/Off]

Status of own vehicle indicator judged from meter display signal received from 
ICC sensor integrated unit with CAN communication line.

ACC SET SPEED

Status of set vehicle speed indicator judged from meter display signal received 
from ICC sensor integrated unit with CAN communication line.

ACC UNIT
[On/Off]

Status of display unit judged from meter display signal received from ICC sensor 
integrated unit with CAN communication line.

SHIFT IND
[P, R, N, D, L, M1, M2, M3, M4, M5, 
M6, M7]

Status of shift position indicator judged from shift position signal and manual mode 
indicator signal received from TCM with CAN communication line.

O/D OFF SW
[On/Off] 

This item is displayed, but cannot be monitored.

AT S MODE SW
[On/Off]

Status of snow mode switch.

AT P MODE SW
[On/Off]

This item is displayed, but cannot be monitored.

M RANGE SW
[On/Off]

Status of manual mode switch.

NM RANGE SW
[On/Off]

Status of non-manual mode switch.

AT SFT UP SW
[On/Off]

Status of A/T shift up switch.

AT SFT DWN SW
[On/Off]

Status of A/T shift down switch.

ST SFT UP SW
[On/Off]

Status of paddle shifter up switch.

ST SFT DWN SW
[On/Off]

Status of paddle shifter down switch.

COMP F/B SIG
[On/Off]

A/C compressor activation condition that ECM judges according to the water tem-
perature and the acceleration degree.

4WD LOCK SW
[On/Off]

This item is displayed, but cannot be monitored.

PKB SW
[On/Off]

Status of parking brake switch.

BUCKLE SW
[On/Off]

Status of seat belt buckle switch.

BRAKE OIL SW
[On/Off]

Status of brake fluid level switch.

DISTANCE
[km/h]

Value of possible driving distance calculated by unified meter and A/C amp.

Display item [Unit]

MAIN

SIGNALS

Description

MWI-48

< SYSTEM DESCRIPTION >

DIAGNOSIS SYSTEM (UNIFIED METER AND A/C AMP.)

NOTE:

Some items are not available according to vehicle specification.

OUTSIDE TEMP
[

°

C] or [

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F]

Ambient air temperature value converted from ambient sensor signal received 
from ambient sensor.
NOTE:
This may not match with the temperature value indicated on the information dis-
play. (Because the information display value is a corrected value from the ambient 
sensor input value.)

FUEL LOW SIG
[On/Off]

Status of fuel level low warning signal to output to AV control unit with CAN com-
munication line.

BUZZER 
[On/Off]

X

Buzzer status (in the combination meter) is judged with the buzzer output signal 
received from each unit with CAN communication line and the warning output con-
dition of the combination meter.

Display item [Unit]

MAIN

SIGNALS

Description

MWI

U1000 CAN COMM CIRCUIT

MWI-49

< DTC/CIRCUIT DIAGNOSIS >

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DTC/CIRCUIT DIAGNOSIS

U1000 CAN COMM CIRCUIT

Description

INFOID:0000000005524599

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 two
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.
CAN Communication Signal Chart. Refer to 

LAN-19, "How to Use CAN Communication Signal Chart"

.

DTC Logic

INFOID:0000000005524600

DTC DETECTION LOGIC

Diagnosis Procedure

INFOID:0000000005524601

1.

PERFORM SELF DIAGNOSTIC

1.

Turn ignition switch ON and wait for 2 seconds or more.

2.

Check “Self Diagnostic Result” of “METER/M&A”. 

Is “CAN COMM CIRCUIT” displayed?

YES

>> Refer to 

LAN-20, "Trouble Diagnosis Flow Chart"

.

NO

>> Refer to 

GI-36, "Intermittent Incident"

.

DTC

Display contents of 

CONSULT-III

Diagnostic item is detected when ...

Probable malfunction location

U1000

CAN COMM CIRCUIT

When unified meter and A/C amp. is not trans-
mitting or receiving CAN communication sig-
nal for 2 seconds or more.

CAN communication system

MWI-50

< DTC/CIRCUIT DIAGNOSIS >

U1010 CONTROL UNIT (CAN)

U1010 CONTROL UNIT (CAN)

Description

INFOID:0000000005524602

Initial diagnosis of unified meter and A/C amp.

DTC Logic

INFOID:0000000005524603

DTC DETECTION LOGIC

Diagnosis Procedure

INFOID:0000000005524604

1.

REPLACE UNIFIED METER AND A/C AMP.

When DTC “U1010” is detected, replace unified meter and A/C amp.

>> INSPECTION END

DTC

Display contents of CON-

SULT-III

Diagnostic item is detected when ...

Probable malfunction location

U1010

CONTROL UNIT (CAN)

If any malfunction is detected during initial di-
agnosis of unified meter and A/C amp. CAN 
controller

Unified meter and A/C amp.