2007 NISSAN 350Z Combination
[x] Cancel search: CombinationPage 44 of 92
DI-44
UNIFIED METER AND A/C AMP
Revision: 2006 November2007 350Z
UNIFIED METER AND A/C AMPPFP:27760
System DescriptionNKS0006X
DESCRIPTION
For the unified meter and A/C amp., the signal required for con-
trolling the combination meter and triple meter are integrated in
the A/C auto amp.
Unified meter and A/C amp. corresponds a CONSULT-III func-
tion (self-diagnosis results, CAN diagnosis support monitor and
data monitor).
COMBINATION METER CONTROL FUNCTION
Unified meter and A/C amp. receives necessary information for combination meter from each unit.
Unified meter and A/C amp. converses with the combination meter transmits a signal through with com-
munication line (TX, RX) between unified meter and A/C amp. and combination meter.
Input/output signals between unified meter and A/C amp. and combination meter.
NOTE:
Combination meter performs fail-safe operation when unified meter and A/C amp. communication is malfunctioning. Refer to DI-7,
"FAIL-SAFE" .
SKIB0018E
Unit Input Output
Unified meter and A/C amp.
Seat belt buckle switch signal (Driver's side)
Trip computer mode switch signal
Trip computer setting switch signal
Illumination control nighttime required signal
Refuel status signal
Vehicle speed signal
Low-fuel warning lamp condition signal
Self-diagnosis condition signal
Odo/trip switch signal
Delivery destination data signal
Combination meter receive error signal
Combination meter specifications signal
Triple meter specifications signal
Engine speed signal
Engine coolant temperature signal
Fuel level sensor signal (resistance value)
Malfunction indicator lamp signal
ABS warning lamp signal
Tire pressure warning lamp signal
Brake warning lamp signal
Oil pressure warning lamp signal
Turn indicator signal
High beam request signal
VDC OFF indicator lamp signal
TCS OFF indicator lamp signal
SLIP indicator lamp signal
CRUISE indicator lamp signal
SET indicator lamp signal
A/T CHECK indicator lamp signal
A/T position indicator signal
Manual mode indicator signal
Manual mode gear position signal
Shift-up indicator setting signal
CAN communication condition signal of A/T
Door switch signal
Position lights request signal
Buzzer output signal
Page 45 of 92
UNIFIED METER AND A/C AMP
DI-45
C
D
E
F
G
H
I
J
L
MA
B
DI
Revision: 2006 November2007 350Z
TRIPLE METER CONTROL FUNCTION
Unified meter and A/C amp. receives necessary information for triple meter from each unit.
Unified meter and A/C amp. calculates necessary information for trip computer.
Unified meter and A/C amp. converses with the combination meter transmits a signal with through com-
munication line (TX, RX) between unified meter and A/C amp. and triple meter.
Input/output signals between unified meter and A/C amp. and triple meter
NOTE:
Triple meter performs fail-safe operation when unified meter and A/C amp. communication is malfunctioning. Refer to DI-29, "
FA I L-
SAFE" .
A/C AUTO AMP. FUNCTION
Unified meter and A/C amp. controls each operation for A/C auto amp. Regarding A/C control, refer to AT C -
24, "AIR CONDITIONER CONTROL" in ATC section.
OTHER FUNCTIONS
Signal Buffer Function
Unified meter and A/C amp. transmits each signal to other units with CAN communication.
Unit Input Output
Unified meter and A/C amp.
LCD indication condition signal
Shift-up indicator setting signal
Oil pressure warning lamp signal
Triple meter receive error signal
Ambient air temperature signal
Ambient air temperature warning signal
Trip distance signal
Trip time signal
Average vehicle speed signal
Average fuel consumption signal
Vehicle speed signal
DTE (Distance to empty) signal
DTE (Distance to empty) warning signal
Tire pressure warning signal
Trip computer mode switch signal
Trip computer setting switch signal
Self-diagnosis condition signal
Odo/trip switch signal
Triple meter specifications signal
Page 47 of 92
UNIFIED METER AND A/C AMP
DI-47
C
D
E
F
G
H
I
J
L
MA
B
DI
Revision: 2006 November2007 350Z
CONSULT-III Function (METER A/C AMP)NKS00071
CONSULT-III can display each diagnostic item using the diagnostic test modes shown following.
SELF-DIAGNOSTIC RESULTS
Display Item List
NOTE:
“TIME” means the following.
0: Means detected malfunction at present.
1-63: Means detected malfunction in past. (Displays number of ignition switch OFF → ON after detecting
malfunction. “Self-diagnosis result” is erased when exceeding “63”.)
DATA MONITOR
Display Item List
System Diagnosis mode Description
METER A/C AMPSELF-DIAG RESULTSUnified meter and A/C amp. check the conditions and displays memo-
rized erro.
DATA MONOTOR Displays unified meter and A/C amp. input data in real time.
Display item [Code] Malfunction is detected when...Reference
page
CAN COMM CIRC [U1000]When unifield meter and A/C amp. is not transmitting or receiving CAN communica-
tion signal for 2 seconds or less.DI-50
T/METER COMM CIRC [B2201]Malfunction is detected in communication of between triple meter and unified meter
and A/C amp.DI-50
METER COMM CIRC [B2202]Malfunction is detected in communication of between combination meter and unified
meter and A/C amp.DI-52
VEHICLE SPEED CIRC [B2205]When an erroneous signal is input.
CAUTION:
Even when there is no malfunction on speed signal system, malfunction may be
misinterpreted when battery has low voltage (when maintaining 7 - 8 V for about
2 seconds). DI-55
Monitor item [Unit] MAIN SIGNALSSELECTION
FROM MENUContents
SPEED METER [km/h] or [mph] X XThis is the angle correction value after the speed signal
from the VDC/TCS/ABS control unit [with VDC system] or
ABS actuator and electric unit (control unit) [without VDC
system] is converted into the vehicle speed.
SPEED OUTPUT [km/h] or [mph] X XThis is the angle correction value before the speed signal
from the VDC/TCS/ABS control unit [with VDC system] or
ABS actuator and electric unit (control unit) [without VDC
system] is converted into the vehicle speed.
TACHO METER [rpm] X XThis is the converted value for the engine speed signal
from the ECM.
W TEMP METER [°C] or [°F] X XThis is the converted value for the engine coolant tempera-
ture signal from the ECM.
FUEL METER [lit.] X XThis is the processed value for the signal (resistance
value) from the fuel gauge.
DISTANCE [km] or [mile] X XThis is the calculated value for the speed signal from the
VDC/TCS/ABS control unit [with VDC system] or ABS
actuator and electric unit (control unit) [without VDC sys-
tem] and the signal (resistance signal) from the fuel gauge.
FUEL W/L [ON/OFF] X X Indicates [ON/OFF] condition of low-fuel warning lamp.
MIL [ON/OFF] XIndicates [ON/OFF] condition of malfunction indicator
lamp.
Page 51 of 92
UNIFIED METER AND A/C AMP
DI-51
C
D
E
F
G
H
I
J
L
MA
B
DI
Revision: 2006 November2007 350Z
4. CHECK VOLTAGE OF UNIFIED METER AND A/C AMP.
1. Connect unified meter and A/C amp. connector.
2. Turn ignition switch ON.
3. Check voltage between triple meter harness connector M44 ter-
minal 4 and ground.
OK or NG
OK >> GO TO 5.
NG >> Replace unified meter and A/C amp.
5. CHECK VOLTAGE SIGNAL OF COMBINATION METER
1. Turn ignition switch OFF.
2. Connect triple meter connector.
3. Turn ignition switch ON.
4. Check voltage signal between triple meter harness connector
M44 terminal 4 and ground.
OK or NG
OK >> Replace unified meter and A/C amp.
NG >> Replace triple meter.
6. CHECK CONTINUITY COMMUNICATION CIRCUIT (RX: TRIPLE METER)
1. Turn ignition switch OFF.
2. Disconnect triple meter connector and unified meter and A/C amp. connector.
3. Check continuity between triple meter harness connector M44
terminal 5 and unified meter and A/C amp. harness connector
M48 terminal 10.
4. Check continuity between triple meter harness connector M44
terminal 5 and ground.
OK or NG
OK >> GO TO 7.
NG >> Repair harness or connector.4 – Ground : Approx. 5 V
SKIB1173E
4 – Ground:
SKIB1174E
SKIA3364E
5 – 10 : Continuity should exist.
5 – Ground : Continuity should not exist.
SKIB1175E
Page 52 of 92
DI-52
UNIFIED METER AND A/C AMP
Revision: 2006 November2007 350Z
7. CHECK VOLTAGE OF COMBINATION METER
1. Connect triple meter connector.
2. Turn ignition switch ON.
3. Check voltage between unified meter and A/C amp. harness
connector M48 terminal 10 and ground.
OK or NG
OK >> GO TO 8.
NG >> Replace triple meter.
8. CHECK VOLTAGE SIGNAL OF UNIFIED METER AND A/C AMP.
1. Turn ignition switch OFF.
2. Connect triple meter connector and unified meter and A/C amp. connector.
3. Turn ignition switch ON.
4. Check voltage signal between triple meter harness connector
M44 terminal 5 and ground.
OK or NG
OK >> Replace triple meter.
NG >> Replace unified meter and A/C amp.
DTC [B2202] Meter Communication CircuitNKS00074
Symptom: Display METER COMM CIRC [B2202] at the result of self-diagnosis for unified meter and A/C amp.
NOTE:
For the wiring diagram, refer to DI-11, "
Wiring Diagram — METER —" .
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 terminals.
OK or NG
OK >> GO TO 2.
NG >> Repair terminal or connector.
2. CHECK METER/GAUGES VISUALLY
Does the pointer on the meter/gauges fluctuate at the engine start?
Is the fluctuation acceptable?
YES >> GO TO 3.
NO >> GO TO 6.10 – Ground : Approx. 5 V
SKIB1176E
5 – Ground :
SKIB1177E
SKIA3363E
Page 53 of 92
UNIFIED METER AND A/C AMP
DI-53
C
D
E
F
G
H
I
J
L
MA
B
DI
Revision: 2006 November2007 350Z
3. CHECK CONTINUITY COMMUNICATION CIRCUIT (TX: COMBINATION METER)
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
M19 terminal 21 and unified meter and A/C amp. harness con-
nector M48 terminal 19.
4. Check continuity between combination meter harness connector
M19 terminal 21 and ground.
OK or NG
OK >> GO TO 4.
NG >> Repair harness or connector.
4. CHECK VOLTAGE OF UNIFIED METER AND A/C AMP.
1. Connect unified meter and A/C amp. connector.
2. Turn ignition switch ON.
3. Check voltage between combination meter harness connector
M19 terminal 21 and ground.
OK or NG
OK >> GO TO 5.
NG >> Replace unified meter and A/C amp.
5. CHECK VOLTAGE SIGNAL OF COMBINATION METER
1. Turn ignition switch OFF.
2. Connect combination meter connector.
3. Turn ignition switch ON.
4. Check voltage signal between combination meter harness con-
nector M19 terminal 21 and ground.
OK or NG
OK >> Replace unified meter and A/C amp.
NG >> Replace combination meter.21 – 19 : Continuity should exist.
21 – Ground : Continuity should not exist.
SKIB1157E
21 – Ground : Approx. 5 V
SKIB1158E
21 – Ground:
SKIB1159E
SKIA3361E
Page 54 of 92
DI-54
UNIFIED METER AND A/C AMP
Revision: 2006 November2007 350Z
6. CHECK CONTINUITY COMMUNICATION CIRCUIT (RX: COMBINATION METER)
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
M19 terminal 22 and unified meter and A/C amp. harness con-
nector M48 terminal 9.
4. Check continuity between combination meter harness connector
M19 terminal 22 (L/OR) and ground.
OK or NG
OK >> GO TO 7.
NG >> Repair harness or connector.
7. CHECK VOLTAGE OF COMBINATION METER
1. Connect combination meter connector.
2. Turn ignition switch ON.
3. Check voltage between unified meter and A/C amp. harness
connector M48 terminal 9 and ground.
OK or NG
OK >> GO TO 8.
NG >> Replace combination meter.
8. CHECK VOLTAGE SIGNAL OF UNIFIED METER AND A/C AMP.
1. Turn ignition switch OFF.
2. Connect unified meter and A/C amp. connector.
3. Turn ignition switch ON.
4. Check voltage signal between combination meter harness con-
nector M19 terminal 22 and ground.
OK or NG
OK >> Replace combination meter.
NG >> Replace unified meter and A/C amp.22 – 9 : Continuity should exist.
22 – Ground : Continuity should not exist.
SKIB1160E
9 – Ground : Approx. 5 V
SKIB1050E
22 – Ground:
SKIB1161E
SKIA3362E
Page 56 of 92
DI-56
WARNING LAMPS
Revision: 2006 November2007 350Z
WARNING LAMPSPFP:24814
System DescriptionNKS00264
OIL PRESSURE WARNING LAMP
Triple meter reads oil pressure signal from oil pressure sensor.
Triple meter judges an oil pressure condition by oil pressure signal, and transmits oil pressure warning
lamp signal to unified meter and A/C amp. with communication line.
Unified meter and A/C amp. transmits oil pressure switch signal to combination meter with communication
line.
Combination meter turns oil pressure warning lamp according to oil pressure switch signal.