Page 40 of 92

DI-40
TRIPLE METERS
Revision: 2006 November2007 350Z
Vehicle Speed Signal InspectionNKS0006R
Symptom: Speed indication is not displayed properly.
1. CHECK UNIFIED METER AND A/C AMP. INPUT SIGNAL
1. Start engine and select “METER A/C AMP” on CONSULT-III.
2. Using “SPEED METER” on the “DATA MONITOR”, compare the value of data monitor with speed indica-
tion of trip computer.
OK or NG
OK >> Refer to DI-18, "Vehicle Speed Signal Inspection" of “COMBINATION METERS”.
NG >> Replace triple meter.
Fuel Consumption Monitor Signal InspectionNKS0006S
Symptom:
DTE (distance to empty) indication is not displayed properly.
Average fuel consumption indication is not displayed properly.
1. CHECK ECM (CONSULT-III)
Perform self-diagnosis of ECM. Refer to EC-116, "
CONSULT-III Function (ENGINE)" .
Self
-diagnostic results
No malfunction detected>>Replace unified meter and A/C amp.
Malfunction detected>>Check applicable parts, and repair or replace corresponding parts.
Oil Pressure Sensor Signal InspectionNKS0006T
Symptom: Indication is malfunction of oil pressure gauge.
1. CHECK OIL PRESSURE SENSOR SIGNAL INPUT
1. Turn ignition switch ON.
2. Check voltage between triple meter harness connector M44 ter-
minal 8 and ground.
OK or NG
OK >> Replace triple meter.
NG >> GO TO 2.
Average vehicle speed indication is not indicated properly.
Replace triple meter. Trip distance indication is not indicated properly.
Trip time indication is not indicated properly.
Stopwatch indication is not displayed properly.
Indication is malfunction of voltmeter.
Indication is malfunction of oil pressure gauge. Refer to DI-40, "
Oil Pressure Sensor Signal Inspection" .
Trip computer switch is not operate. Refer to DI-42, "
Trip Computer Switch Inspection" . Trouble phenomenon Possible cause
8 – Ground
When ignition switch is in ON
position (Engine stopped.): Approx. 1 V
Engine running [When the oil
pressure is 80 psi (500 kPa)]: Approx. 3 V
SKIB1167E
Page 41 of 92

TRIPLE METERS
DI-41
C
D
E
F
G
H
I
J
L
MA
B
DI
Revision: 2006 November2007 350Z
2. CHECK OIL PRESSURE SENSOR POWER SUPPLY
Check voltage between triple meter harness connector M44 terminal
9 and ground.
OK or NG
OK >> GO TO 3.
NG >> Replace triple meter.
3. CHECK OIL PRESSURE SENSOR POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect triple meter and oil pressure switch connector.
3. Check continuity between triple meter harness connector M44
terminal 9 and oil pressure sensor harness connector F21 termi-
nal 1.
4. Check continuity between triple meter harness connector M44
terminal 9 and ground.
OK or NG
OK >> GO TO 4.
NG >> Repair harness or connector.
4. CHECK OIL PRESSURE SENSOR SIGNAL CIRCUIT
1. Check continuity between triple meter harness connector M44
terminal 8 and oil pressure sensor harness connector F21 termi-
nal 2.
2. Check continuity between triple meter harness connector M44
terminal 8 and ground.
OK or NG
OK >> GO TO 5.
NG >> Repair harness or connector.
5. CHECK OIL PRESSURE SENSOR GROUND CIRCUIT
Check continuity between triple meter harness connector M44 termi-
nal 7 and oil pressure sensor harness connector F21 terminal 3.
OK or NG
OK >> Replace oil pressure sensor.
NG >> Repair harness or connector.9 – Ground : Approx. 5 V
SKIB1168E
9 – 1 : Continuity should exist.
9 – Ground : Continuity should not exist.
SKIB1169E
8 – 2 : Continuity should exist.
8 – Ground :Continuity should not exist.
SKIB1170E
7 – 3 : Continuity should exist.
SKIB1171E
Page 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 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.
Page 66 of 92

DI-66
WARNING LAMPS
Revision: 2006 November2007 350Z
CONSULT-III Function (METER A/C AMP)NKS00079
Refer to DI-15, "CONSULT-III Function (METER A/C AMP)" in “UNIFIED METER AND A/C AMP”.
Oil Pressure Warning Lamp Stays Off (Ignition Switch ON) or Stays On (Oil
Pressure Is Normal)
NKS0007A
NOTE:
For oil pressure inspection, refer to LU-7, "
OIL PRESSURE CHECK" .
1. CHECK OIL PRESSURE GAUGE
Start the engine.
Does oil pressure gauge operate?
YES >> GO TO 2.
NO >> Check oil pressure sensor signal.
2. CHECK COMMUNICATION LINE
Perform self-diagnosis of unified meter and A/C amp. Refer to DI-15, "
CONSULT-III Function (METER A/C
AMP)" .
Self-diagnostic results
No malfunction detected>>GO TO 3.
Malfunction detected>>Check applicable parts, and repair or replace corresponding parts.
3. CHECK UNIFIED METER AND A/C AMP. INPUT SIGNAL
Select “METER A/C AMP” on CONSULT-III. Operate ignition switch with “OIL W/L” of “DATA MONITOR” and
check operation status.
OK or NG
OK >> Replace combination meter.
NG >> Replace triple meter.“OIL W/L”
When ignition switch is in ON
position (Engine stopped.): ON
When engine running : OFF
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