Infiniti G35 (V35) Sedan. Manual — part 953
MWI
DIAGNOSIS SYSTEM (UNIFIED METER AND A/C AMP.)
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< FUNCTION DIAGNOSIS >
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NOTE:
Some items are not available according to vehicle specification.
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, M1, M2, M3, M4, M5]
Status of A/T position indicator judged from shift position signal and manual mode
indicator signal received from TCM with CAN communication line.
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 not 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 FB SIG
[On/Off]
A/C compressor activation condition that ECM judges according to the water tem-
perature and the acceleration degree.
4WD LOCK SW
[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]
Value of possible driving distance calculated by unified meter and A/C amp.
OUTSIDE TEMP
[
°
C or
°
F]
Ambient 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]
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
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< COMPONENT DIAGNOSIS >
U1000 CAN COMM CIRCUIT
COMPONENT DIAGNOSIS
U1000 CAN COMM CIRCUIT
Description
INFOID:0000000000964372
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-28, "CAN Communication Signal Chart"
DTC Logic
INFOID:0000000000964373
DTC DETECTION LOGIC
Diagnosis Procedure
INFOID:0000000000964374
1.
PERFORM SELF DIAGNOSTIC
1.
Turn ignition switch ON and wait for 2 second or more.
2.
Check “Self Diagnostic Result” of “METER/M&A”.
Is “CAN COMM CIRCUIT” displayed?
YES
>> Refer to
LAN-18, "Trouble Diagnosis Flow Chart"
NO
>> Refer to
GI-39, "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
U1010 CONTROL UNIT (CAN)
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< COMPONENT DIAGNOSIS >
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U1010 CONTROL UNIT (CAN)
Description
INFOID:0000000000964375
Initial diagnosis of unified meter and A/C amp.
DTC Logic
INFOID:0000000000964376
DTC DETECTION LOGIC
Diagnosis Procedure
INFOID:0000000000964377
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.
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< COMPONENT DIAGNOSIS >
B2201 COMMUNICATION ERROR 1
B2201 COMMUNICATION ERROR 1
Description
INFOID:0000000000964378
The communication line (LCD <-> AMP.) is used to communicate signals between the combination meter and
the unified meter and A/C amp. in order to control the information display.
DTC Logic
INFOID:0000000000964379
DTC DETECTION LOGIC
Diagnosis Procedure
INFOID:0000000000964380
1.
CHECK CONNECTOR
Check combination meter, unified meter and A/C amp. and terminals (combination meter side, unified meter
and A/C amp. side, and harness side) for looseness or bent.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair terminal or connector.
2.
CHECK CONTINUITY COMMUNICATION CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect combination meter connector and unified meter and A/C amp. connector.
3.
Check continuity between combination meter harness connector M53 terminals 24, 25 and unified meter
and A/C amp. harness connector M66 terminals 14, 34.
4.
Check continuity between combination meter harness connector M53 terminals 24, 25 and ground.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair harness or connector.
3.
CHECK UNIFIED METER AND A/C AMP. OUTPUT VOLTAGE
1.
Connect unified meter and A/C amp. connector.
2.
Turn ignition switch ON.
3.
Check voltage between unified meter and A/C amp. harness connector M66 terminal 14 and ground.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Replace unified meter and A/C amp.
4.
CHECK COMBINATION METER OUTPUT VOLTAGE
1.
Turn ignition switch OFF.
2.
Disconnect unified meter and A/C amp. connector.
3.
Connect combination meter connector.
4.
Turn ignition switch ON.
5.
Check voltage between combination meter harness connector M53 terminal 25 and ground.
DTC
Display contents of
CONSULT-III
Diagnostic item is detected when ...
Probable malfunction location
B2201
COMM ERROR 1
If a communication error is present in the
communication line (LCD <-> AMP.) for 2 sec-
onds or more
Communication line (LCD <-> AMP.) circuit
24 - 14
: Continuity should exist.
25 - 34
: Continuity should exist.
24, 25 - Ground
: Continuity should not exist.
14 - Ground
: Approx 12 V
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