2003 NISSAN ALMERA N16 Engine Control

DIAGNOSTIC PROCEDURE 2=NJEL0437S02SYMPTOM: Interior lamp timer does not cancel properly.
1 CHECK IGNITION ON SIGNAL
Check voltage between time control unit harness connector terminal 1 and ground.
SEL429X
OK or NG
OK GO TO 2.
NGCheck the following.
10A fuse [No. 10, located in fuse block (J/B)]
Harness for open or short between time control unit and fuse
2 CHECK DOOR SWITCH INPUT SIGNAL
Check voltage between time control unit harness connector terminal 6 and ground.
SEL430X
OK or NG
OK GO TO 4.
NG GO TO 3.
INTERIOR ROOM LAMP
Trouble Diagnoses/YD Engine Models without Common Rail and K9K Engine Models (Cont’d)
EL-106

3 CHECK DRIVER SIDE DOOR SWITCH
Check continuity between terminals 2 and 3.
SEL325WA
OK or NG
OKCheck the following.
Driver side door switch ground circuit and condition
Harness for open or short between time control unit and driver side door switch
NG Replace driver side door switch.
4 CHECK FRONT DOOR UNLOCK SENSOR INPUT SIGNAL
Check voltage between time control unit harness connector terminal 35 andground.
SEL431X
OK or NG
OK Replace time control unit.
NG GO TO 5.
5 CHECK FRONT DOOR UNLOCK SENSOR
1. Disconnect front door unlock sensor harness connector.
2. Check continuity between door unlock sensor terminals.
YEL792C
OK or NG
OKCheck the following.
Door unlock sensor ground circuit
Harness for open or short between time control unit and door unlock sensor
NG Replace door unlock sensor.
GI
MA
EM
LC
EC
FE
CL
MT
AT
AX
SU
BR
ST
RS
BT
HA
SC
IDX
INTERIOR ROOM LAMP
Trouble Diagnoses/YD Engine Models without Common Rail and K9K Engine Models (Cont’d)
EL-107

Component Parts and Harness Connector
Location
NJEL0441For details, refer to “ELECTRICAL UNIT LOCATION” (EL-543) and
“HARNESS LAYOUT” (EL-550).
System DescriptionNJEL0442UNIFIED CONTROL METERNJEL0442S01Speedometer, odo/trip meter, tachometer, fuel gauge and water temperature gauge are controlled totally
by control unit built-in combination meter.
Digital meter is adopted for odo/trip meter.*
*The record of the odo meter is kept even if the battery cable is disconnected. The record of the trip meter
is erased when the battery cable is disconnected.
Odo/trip meter segment can be checked in diagnosis mode.
Meter/gauge can be checked in diagnosis mode.
HOW TO CHANGE THE DISPLAY FOR ODO/TRIP METERNJEL0442S02
SEL175W
NOTE:
Turn ignition switch to the “ON” position to operate odo/trip meter.
POWER SUPPLY AND GROUND CIRCUITNJEL0442S03Power is supplied at all times
through 10A fuse [No. 12, located in the fuse block (J/B)]
to combination meter terminal 29
With the ignition switch in the ON or START position, power is supplied
through 10A fuse [No. 30, located in the fuse block (J/B)]
to combination meter terminal 30
Ground is supplied
through body grounds F118 (QG engine models), M28 and M67
to combination meter terminal 32
METERS AND GAUGES
Component Parts and Harness Connector Location
EL-110

SYMPTOM CHARTNJEL0448S02Symptom Chart 1 (Malfunction is Indicated in
Diagnosis Mode)
NJEL0448S0201
Symptom Possible causes Repair order
Odo/trip meter indicates
malfunction in Diagnosis
mode.Unified meter control unit Replace unified meter control unit.
Multiple meter/gauge indi-
cate malfunction in Diagno-
sis mode.
One of speedometer/
tachometer/fuel gauge/
water temp. gauge indi-
cates malfunction in Diag-
nosis mode.1. Meter/Gauge
2. Unified meter control unit1. Check resistance of meter/gauge indicating malfunc-
tion. If the resistance is NG, replace the meter/
gauge.
2. If the resistance of meter/gauge is OK, replace uni-
fied meter control unit.
Symptom Chart 2 (No Malfunction is Indicated in
Diagnosis Mode)
NJEL0448S0202
Symptom Possible causes Repair order
One of speedometer/
tachometer/fuel gauge/
water temp. gauge is mal-
functioning.1. Sensor signal
- Vehicle speed signal
- Engine revolution signal
- Fuel gauge
- Water temp. gauge
2. Unified meter control unit1. Check the sensor for malfunctioning meter/gauge.
INSPECTION/VEHICLE SPEED SENSOR (Refer to
EL-123.)
INSPECTION/ENGINE REVOLUTION SIGNAL (YD
ENGINE MODELS WITHOUT COMMON RAIL)
(Refer to EL-125.)
INSPECTION/ENGINE REVOLUTION SIGNAL (QG
AND YD ENGINE MODELS WITH COMMON RAIL)
(Refer to EL-124.)
INSPECTION/FUEL LEVEL SENSOR UNIT (Refer to
EL-126.)
INSPECTION/THERMAL TRANSMITTER (YD
ENGINE MODELS WITHOUT COMMON RAIL)
(Refer to EL-127.)
INSPECTION/WATER TEMPERATURE SIGNAL (QG
AND YD ENGINE MODELS WITH COMMON RAIL)
(Refer to EL-127.)
2. Replace unified meter control unit. Multiple meter/gauge are
malfunctioning. (except
odo/trip meter)
Before starting trouble diagnoses below, perform PRELIMINARY
CHECK, EL-120.
GI
MA
EM
LC
EC
FE
CL
MT
AT
AX
SU
BR
ST
RS
BT
HA
SC
IDX
METERS AND GAUGES
Trouble Diagnoses (Cont’d)
EL-121

Models with ABS=NJEL0448S0402
1 ABS ACTUATOR AND ELECTRIC UNIT SYSTEM INSPECTION
Perform ABS actuator and electric unit self-diagnosis.
Refer to BR-55, “CONSULT-II Functions”.
OK or NG
OK GO TO 2.
NG Check ABS control system. Refer to BR-62, “TROUBLE DIAGNOSIS — BASIC INSPEC-
TION”.
2 CHECK VEHICLE SPEED SIGNAL CIRCUIT
1. Disconnect combination meter connector and “ABS actuator and electricunit” connector.
2. Check continuity between combination meter connector terminal 12 and “ABS actuator and electric unit” connector ter-
minal 10.
YEL815D
OK or NG
OK Recheck “PRELIMINARY CHECK”.
NG Check harness for open or short between combination meter and “ABS actuator and
electric unit”. If NG, repair harness or connector.
INSPECTION/ENGINE REVOLUTION SIGNAL (QG AND
YD ENGINE MODELS WITH COMMON RAIL)
NJEL0448S11
1 ECM SYSTEM INSPECTION
Perform ECM self-diagnosis. Refer to “Emission-related Diagnostic Information” (QG engine with EURO-OBD) (EC-37),
“Emission-related Diagnostic Information” (QG engine without EURO-OBD) (EC-429), “Diagnostic Trouble Code (DTC)”
(YD engine) (EC-34).
OK or NG
OK Recheck “PRELIMINARY CHECK”.
NG Perform “Diagnostic Procedure” for displayed DTC.
METERS AND GAUGES
Trouble Diagnoses (Cont’d)
EL-124

Component Parts and Harness Connector
Location
NJEL0452
YEL819D
System Description/QG Engine Models and YD
Engine Models with Common Rail
NJEL0453The warning chime is controlled by the smart entrance control unit.
The warning chime is located in the smart entrance control unit.
Power is supplied at all times
through 10A fuse [No. 12, located in the fuse block (J/B)]
to key switch terminal 1, and
to smart entrance control unit terminal 56.
through 10A fuse (No. 38, located in the fusible link and fuse box)
to lighting switch terminal 11.
With the ignition switch in the ON or START position, power is supplied
through 10A fuse [No. 10, located in the fuse block (J/B)]
to smart entrance control unit terminal 29.
Ground is supplied to smart entrance control unit terminal 53 through bodygrounds F118 (QG engine models),
M28 and M67.
When a signal or combined signals is/are received by the smart entrance control unit, the warning chime will
sound.
IGNITION KEY WARNING CHIMENJEL0453S01With the key in the ignition switch in the OFF position, the driver’s door open and driver’s door locked, the
warning chime will sound.
Power is supplied
WARNING CHIME
Component Parts and Harness Connector Location
EL-136

from key switch terminal 2
to smart entrance control unit terminal 5.
Ground is supplied
from body grounds B9, B21 and D96 (Hatchback) or B308 (Sedan)
through front door switch (driver side) terminal 3 and 2
to smart entrance control unit terminal 43.
And, then smart entrance control unit receives any door lock signal.
LIGHT WARNING CHIMENJEL0453S02With ignition switch OFF, driver’s door open, and lighting switch in 1ST or2ND position, warning chime will
sound. Power is supplied.
from lighting switch terminal 12
through daytime light control unit terminals 11 and 10 (with daytime lightsystem)
to smart entrance control unit terminal 17
Ground is supplied
from front door switch (driver side) terminal 2
to smart entrance control unit terminal 43.
Front door switch (driver side) terminal 3 is grounded through body grounds B9, B21 and D96 (Hatchback) or
B308 (Sedan).
System Description/YD Engine Models without
Common Rail and K9K Engine Models
NJEL0550The warning chime is controlled by the time control unit.
The warning chime is located in the time control unit.
Power is supplied at all times
through 15A fuse [No. 5, located in fuse block (J/B)]
to time control unit terminal 9.
through 10A fuse [No. 12, located in the fuse block (J/B)]
to key switch terminal 1.
through 10A fuse (No. 38, located in the fuse and fusible link box)
to lighting switch terminal 11.
With the ignition switch in the ON or START position, power is supplied
through 10A fuse [No. 10, located in the fuse block (J/B)]
to time control unit terminal 1.
Ground is supplied to time control unit terminal 16 through body grounds M28 and M67.
When a signal, or combination of signals, is received by the time control unit, the warning chime will sound.
IGNITION KEY WARNING CHIMENJEL0550S01With the key in the ignition switch in the OFF position, the driver’s door open and driver’s door locked, the
warning chime will sound. Power is supplied
from key switch terminal 2
to time control unit terminal 22.
Ground is supplied
from body grounds B9, B21 and D96 (Hatchback) or B308 (Sedan)
through front door switch (driver side) terminal 3 and 2
to time control unit terminal 6, and
Ground is interrupted,
from body grounds M28 and M67
to time control unit terminal 35
LIGHT WARNING CHIMENJEL0550S02With ignition switch OFF, driver’s door open, and lighting switch in 1ST or2ND position, warning chime will
sound. Power is supplied.
from lighting switch terminal 12
to time control unit terminal 10
GI
MA
EM
LC
EC
FE
CL
MT
AT
AX
SU
BR
ST
RS
BT
HA
SC
IDX
WARNING CHIME
System Description/QG Engine Models and YD Engine Models with Common Rail(Cont’d)
EL-137

Ground is supplied
from front door switch (driver side) terminal 2
to time control unit terminal 6.
Front door switch (driver side) terminal 3 is grounded through body grounds B9, B21 and D96 (Hatchback) or
B308 (Sedan).
WARNING CHIME
System Description/YD Engine Models without Common Rail and K9K Engine Models (Cont’d)
EL-138