Unified NISSAN TEANA 2003 Manual PDF

COMBINATION METERS
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SPEEDOMETER
ABS actuator and electric unit (control unit) provides a vehicle speed signal to the unified meter and A/C amp.
with CAN communication line. After unified meter and A/C amp. received the vehicle speed signal, it changes
the signal to 8 pulse signal and provides the 8 pulse signal to the combination meter for the speedometer.
TACHOMETER
The tachometer indicates engine speed in revolutions per minute (rpm).
ECM provides an engine speed signal to unified meter and A/C amp. with CAN communication line. Unified
meter and A/C amp. provides an engine speed signal to combination meter for tachometer with communica-
tion line between unified meter and A/C amp. and combination meter.
LOW WATER TEMPERATURE INDICATOR LAMP, HIGH WATER TEMPERATURE WARNING
LAMP
ECM converts water temperature signal from water temperature sensor into data and transmits the data to uni-
fied meter and A/C amp. with CAN communication line. Unified meter and A/C amp. transmit the received
water temperature signal to the combination meter with communication line between unified meter and A/C
amp. and combination meter. Combination meter turns on/off low water temperature indicator lamp or high
water temperature warning lamp through the received water temperature signal.
FUEL GAUGE
The fuel gauge indicates the approximate fuel level in the fuel tank.
The fuel gauge is regulated by a variable ground signal supplied

from unified meter and A/C amp. terminal 36

through the fuel level sensor unit and fuel pump terminals 5 and 2

to unified meter and A/C amp. terminal 28 for the fuel gauge.
Unified meter and A/C amp. provides a fuel level signal to combination meter for fuel gauge with communica-
tion line between unified meter and A/C amp. and combination meter.
Component Parts and Harness Connector LocationBKS001RY
SKIB0770E

DI-12
COMBINATION METERS

Terminals and Reference Value for Combination MeterBKS001S2
TerminalWire
colorItemCondition
Reference value
Ignition
switchOperation or condition
7 Y/R Battery power supply OFF — Battery voltage
8 P Ignition switch ON or START ON — Battery voltage
10
B Ground ON — Approx. 0V 11
12
17 V Ignition switch ACC or ON ACC — Battery voltage
18 G/BTX communication line (To
unified meter and A/C amp.)ON —
19 RRX communication line (From
unified meter and A/C amp.)ON —
20 V/WVehicle speed signal
(8-pulse)ONSpeedometer operated
[When vehicle speed is
approx. 40 km/h (25 MPH)]NOTE:
Maximum voltage may be 12V
due to specifications (connected
units).
SKIA3361E
SKIA3362E
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COMBINATION METERS
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Terminals and Reference Value for Unified Meter and A/C Amp.BKS001S3
Self-Diagnosis Mode of Combination MeterBKS001S4
SELF-DIAGNOSIS MODE FUNCTION

Odo/trip meter segment and shift indicator segment operation can be checked in self-diagnosis mode.

Meter/gauge can be checked in self-diagnosis mode.
OPERATION PROCEDURE
1. Turn the ignition switch ON, and switch the odo/trip meter to “trip A” or “trip B”.
NOTE:
If the diagnosis function is activated with the “trip A” displayed, the mileage on the “trip A” will indicate
0000.0, but the actual trip mileage will be retained. (Trip same way for “trip B”.)
2. Turn ignition switch OFF.
3. While pushing the odo/trip meter switch, turn ignition switch ON again.
4. Make sure that the trip meter displays “0000.0”.
TerminalWire
colorItemCondition
Reference value
Ignition
switchOperation or condition
1 L CAN- H — — —
9RTX communication line (To
combination meter)ON —
11 P C A N - L — — —
19 G/BRX communication line
(From combination meter)ON —
21 Y/R Battery power supply OFF — Battery voltage
22 GIgnition switch ON or
STARTON — Battery voltage
26 V/WVehicle speed signal
(8-pulse)ONSpeedometer operated
[When vehicle speed is
approx. 40 km/h (25 MPH)]NOTE:
Maximum voltage may be 12V due to
specifications (connected units).
28 G/O Fuel level sensor signal — —Refer to DI-24, "
CHECK FUEL LEVEL
SENSOR UNIT" .
29 B Ground (for power) ON — Approx. 0V
30 B Ground ON — Approx. 0V
35 V Ignition switch ACC or ON ACC — Battery voltage
36 B/W Fuel level sensor ground ON — Approx. 0V
46 W/L Ignition switch ON ON — Battery voltage
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DI-14
COMBINATION METERS

5. Press the odo/trip meter switch at least 3 times (within 7 seconds after the ignition switch is turned ON).
6. All the segments on the odo/trip meter and shift indicator illuminate, and simultaneously the low-fuel warn-
ing lamp indicator illuminates. At this time, the unified meter control unit is turned to diagnosis mode.
NOTE:

A/T MODELS (1)

CVT MODELS (2)
7. Each meter activates during pressing odo/trip meter switch. (At this time, the low-fuel warning lamp goes
off, low water temperature indicator lamp and high water temperature warning lamp goes on.)
NOTE:
The figure is reference.
CONSULT-II FunctionBKS001S5
Refer to DI-29, "CONSULT-II Function (METER A/C AMP)" in “UNIFIED METER AND A/C AMP”.
Trouble DiagnosisBKS001S6
HOW TO PROCEED WITH TROUBLE DIAGNOSIS
1. Confirm the symptom or customer complaint.
2. Perform preliminary check. Refer to DI-15, "
PRELIMINARY CHECK" .
3. According to the symptom chart, repair or replace the cause of the symptom.
4. Does the meter operate normally? If so, GO TO 5. If not, GO TO 3.
5. INSPECTION END
PKIC8364J
SKIB0773E

COMBINATION METERS
DI-15
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PRELIMINARY CHECK
1. CHECK SELF-DIAGNOSIS RESULT OF UNIFIED METER AND A/C AMP.
1. Start engine.
2. Select “METER A/C AMP” on COSULT-II, and perform self-diagnosis of unified meter and A/C amp. Refer
to DI-29, "
CONSULT-II Function (METER A/C AMP)"
3. After erasing the self-diagnosis result, perform self-diagnosis again.
Self-diagnosis results content
No malfunction detected >> GO TO 2.
Malfuction detected >> GO TO DI-17, "
SYMPTOM CHART 2" .
2. CHECK WARNING LAMP ILLUMINATION
1. Turn ignition switch ON.
2. Make sure warninig lamps (such as malfunction indicator lamp and oil pressure warning lamp) illuminate.
Do warninig lamps illuminate?
OK >> GO TO 3.
NG >> Check ignition power supply system of combination meter.
3. CHECK SELF-DIAGNOSIS OPERATION OF COMBINATION METER
Perform combination meter self-diagnosis. Refer to DI-13, "
OPERATION PROCEDURE" .
Does self-diagnosis function operate?
OK >> GO TO 4.
NG >> Check battery power supply of combinatiom meter and ground circuit.
4. CHECK COMBINATION METER CIRCUIT
Check indication of each meter/gauge in self-diagnosis mode.
OK or NG
OK >> GO TO 5
NG >> Replace combination meter.
5. CHECK LOW-FUEL WARNING LAMP ILLUMINATION
While checking low-fuel warning lamp check, confirm illumination of low-fuel warning lamp.
Does low
-fuel warning lamp illuminate (while not pushing odo/trip meter switch)?
YES >> GO TO 6.
NO >> Replace combination meter.
Condition of odo/trip meter switch Low-fuel warning lamp
Pressed Does not illuminate.
Released Illuminates.

COMBINATION METERS
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SYMPTOM CHART 1
SYMPTOM CHART 2
Symptom Check item
Indication is inaccurate for the speedometer and odo/trip meter. Refer to DI-20, "
Vehicle Speed Signal Inspection" .
Tachometer indication is inaccurate. Refer to DI-21, "
Engine Speed Signal Inspection" .
Water temperature gauge indication is inaccurate. Refer to DI-21, "
Engine Coolant Temperature Signal Inspection" .
Fuel gauge indication is inaccurate.
Refer to DI-22, "
Fuel Level Sensor Signal Inspection" .
Low-fuel warning lamp indication is inaccurate.
A/T indicator does not illuminate. Refer to DI-48, "
A/T INDICATOR" .
CVT indicator does not illuminate Refer to DI-52, "
CVT INDICATOR"
Illumination control does not operate. Replace combination meter.
Displayed item [Code] Inspection contents Check item
CAN COMM CIRC [U1000] Inspect the CAN communication.Refer to DI-32, "
DTC [U1000] CAN Communication Circuit" .
CAUTION:
Even when there is no malfunction on CAN communica-
tion system, malfunction may be misinterpreted when bat-
tery has low voltage (when maintaining 7-8V for about 2
seconds) or 10A fuse [No. 19, located in the fuse block (J/
B)] is disconnected.
METER COMM CIRC [B2202]Inspect the communication line
between the combination meter
and the unified meter and A/C
amp.Refer to DI-32, "
DTC [B2202] Meter Communication Circuit" .
VEHICLE SPEED CIRC [B2205]Inspect the vehicle speed input
signal.Refer to DI-34, "
DTC [B2205] Vehicle Speed Circuit" .
CAUTION:
Even when there is no malfunction on speed signal sys-
tem, malfunction may be misinterpreted when battery has
low voltage (when maintaining 7-8V for about 2 seconds).

DI-18
COMBINATION METERS

Power Supply and Ground Circuit InspectionBKS001S7
1. CHECK FUSE
Check combination meter and unified meter and A/C amp. fuses for blown-out.
OK or NG
OK >> GO TO 2.
NG >> Be sure to eliminate cause of malfunction before installing new fuse. Refer to PG-3, "
POWER
SUPPLY ROUTING CIRCUIT" .
2. CHECK POWER SUPPLY CIRCUIT
1. Check voltage between combination meter harness connector
terminals and ground.
2. Check voltage between unified meter and A/C amp. harness
connector terminals and ground.
OK or NG
OK >> GO TO 3.
NG >> Check the following.

Harness between combination meter and fuse

Harness between unified meter and A/C amp. and fuse
Unit Power source Fuse No.
Combination meter Battery 17
Ignition switch ACC or ON 6
Ignition switch ON or START 14
Unified meter and A/C amp.Battery 19
Ignition switch ACC or ON 6
Ignition switch ON or START 12
Ignition switch ON 10, 11
Terminals Ignition switch position
(+)
(–) OFF ACC ON
Connector Terminal
M707
GroundBattery
voltageBattery
voltageBattery
voltage
17 0 VBattery
voltageBattery
voltage
8 0 V 0 VBattery
voltage
SKIB0774E
Terminals Ignition switch position
(+)
(–) OFF ACC ON
Connector Terminal
M4221
GroundBattery
voltageBattery
voltageBattery
voltage
35 0 VBattery
voltageBattery
voltage
22 0 V 0 VBattery
voltage
M45 46 0 V 0 VBattery
voltage
SKIB0775E

COMBINATION METERS
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3. CHECK GROUND 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
M70 terminals 10, 11, 12 and ground.
4. Check continuity between unified meter and A/C amp. harness
connector M42 terminal 29, 30 and ground.
OK or NG
OK >> INSPECTION END
NG >> Repair harness or connector.10 – Ground
: Continuity should exist. 11 – Ground
12 – Ground
SKIA8715E
29 – Ground
: Continuity should exist.
30 – Ground
SKIA5202E

DI-20
COMBINATION METERS

Vehicle Speed Signal InspectionBKS001S8
1. CHECK ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) SELF-DIAGNOSIS
Perform the ABS actuator and electric unit (control unit) self-diagnosis. Refer to BRC-57, "
CONSULT-II Func-
tions" (with VDC system) or BRC-17, "CONSULT-II Functions (ABS)" (without VDC system).
Self
-diagnostic results content
No malfunction detected>>GO TO 2.
Malfunction detected>>Check applicable parts, and repair or replace corresponding parts.
2. CHECK UNIFIED METER AND A/C AMP. OUTPUT SIGNAL
1. Start engine and drive vehicle at approximately 40 km/h (25 MPH).
2. Check voltage signal between unified meter and A/C amp. har-
ness connector M42 terminal 26 and ground with simple oscillo-
scope of CONSULT-II.
OK or NG
OK >> GO TO 3.
NG >>

If monitor indicates “0V” constantly, repair or replace malfunctioning parts after checking each
unit inputting vehicle speed signal (8 pulse), harness and connector between each unit and uni-
fied meter and A/C amp.

If monitor indicates “5V” or “12V” constantly, replace unified meter and A/C amp. Refer to DI-34,
"Removal and Installation of Unified Meter and A/C Amp." .
3. CHECK CONTINUITY BETWEEN COMBINATION METER AND UNIFIED METER AND A/C AMP.
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
M70 terminal 20 and unified meter and A/C amp. harness con-
nector M42 terminal 26.
OK or NG
OK >> Replace combination meter.
NG >> Repair harness or connector.26 – Ground:NOTE:
Maximum voltage may be
12V due to specifications
(connected units).
SKIB0338E
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20 – 26 : Continuity should exist.
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COMBINATION METERS
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Engine Speed Signal Inspection BKS001S9
1. CHECK UNIFIED METER AND A/C AMP. OUTPUT SIGNAL
1. Start an engine and select “METER A/C AMP” on CONSULT-II.
2. Using “TACHO METER” on “DATA MONITOR”, compare the
value of “DATA MONITOR” with tachometer pointer of combina-
tion meter.
OK or NG
OK >> GO TO 2.
NG >> Replace combination meter.
2. CHECK UNIFIED METER AND A/C AMP. INPUT SIGNAL
1. Select “ENGINE” on CONSULT-II.
2. Using “ENG SPEED” on “DATA MONITOR”, print out the CON-
SULT-II screen when the engine is idling.
3. Select “METER A/C AMP” on CONSULT-II.
4. Using “TACHO METER” on “DATA MONITOR”, compare the
value of “DATA MONITOR” of the idling speed with that of the
“ENG SPEED”.
OK or NG
OK >> Perform ECM self-diagnosis. Refer to EC-425, "CON-
SULT-II Function (ENGINE)" . Check applicable parts,
and repair or replace corresponding parts.
NG >> Replace unified meter and A/C amp. Refer to DI-34,
"Removal and Installation of Unified Meter and A/C Amp." .
Engine Coolant Temperature Signal InspectionBKS001SA
1. CHECK UNIFIED METER AND A/C AMP. INPUT SIGNAL
1. Start engine and select “METER A/C AMP” on CONSULT-II.
2. Using “W TEMP METER” on “DATA MONITOR”, compare the
value of “DATA MONITOR” with low water temperature indicator
lamp and high water temperature warning lamp of combination
meter.
OK or NG
OK >> GO TO 2.
NG >> Replace combination meter.
PKIA2090E
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Low water temperature indicator lamp
and high water temperature warning
lamp conditionsReference value of data monitor °C (°F)
High water temperature warning lamp
turns on. (Red)Approx. more than 114 (237)
Both turn off. Approx. 55 - 108 (131 - 226)
Low water temperature indicator lamp
turns on. (Blue)Approx. less than 50 (122)
PKIA2091E