2003 NISSAN ALMERA N16 Electric

IAT SENSOR
EC-643
[QG (WITHOUT EURO-OBD)]
C
D
E
F
G
H
I
J
K
L
MA
EC
IAT SENSORPFP:22630
Component DescriptionEBS00KKM
The intake air temperature sensor is built into mass air flow sensor.
The sensor detects intake air temperature and transmits a signal to
the ECM.
The temperature sensing unit uses a thermistor which is sensitive to
the change in temperature. Electrical resistance of the thermistor
decreases in response to the temperature rise.

*: These data are reference values and are measured between ECM terminal 34
(Intake air temperature sensor) and body ground.
CAUTION:
Do not use ECM ground terminals when measuring input/output
voltage. Doing so may result in damage to the ECM's transistor.
Use a ground other than ECM terminals, such as the ground.
SEC266C
Intake air
temperature°C (°F)Voltage* V Resistance kΩ
25 (77) 3.32 1.9 - 2.1
80 (176) 1.23 0.31 - 0.37
SEF012P

VSS
EC-677
[QG (WITHOUT EURO-OBD)]
C
D
E
F
G
H
I
J
K
L
MA
EC
VSSPFP:32702
DescriptionEBS00KLE
NOTE:
If DTC U1000 or U1001 is displayed, first perform the trouble diagnosis for DTC U1000, U1001. Refer to
EC-492, "
DTC U1000, U1001 CAN COMMUNICATION LINE" .
The vehicle speed signal is sent from vehicle speed sensor (models with ABS) or ABS actuator and electric
unit (control unit) (models with ABS) to combination meter. The combination meter then sends a signal to the
ECM through CAN communication line.
Diagnostic ProcedureEBS00KLF
1.CHECK VEHICLE SPEED SIGNAL OVERALL FUNCTION
With CONSULT-II
1. Lift up the vehicle.
2. Start engine.
3. Select “VHCL SPEED SE” in “DATA MONITOR” mode with
CONSULT-II.
4. Make sure that “VHCL SPEED SE” indication exceeds 10 km/h
(6 MPH) when rotating wheels with suitable gear position.
Without CONSULT-II
1. Lift up the vehicle.
2. Start engine.
3. Read vehicle speed with combination meter.
Make sure that vehicle speed indication exceeds 10 km/h (6 MPH) when rotating wheels with suitable
gear position.
OK or NG
OK >>INSPECTION END
NG >> GO TO 2.
2.CHECK DTC WITH VEHICLE SPEED SONSOR (MODELS WITHOUT ABS) OR ABS ACTUATOR AND
ELECTRIC UNIT (CONTROL UNIT) (MODELS WITH ABS)
Refer to EL-123 (models without ABS) or EL-124 (models with ABS).
OK or NG
OK >> GO TO 2.
NG >> Repair or replace.
3.CHECK COMBINATION METER
Check combination meter function.
Refer to EL-112.
>>INSPECTION END
SEF196Y

EC-678
[QG (WITHOUT EURO-OBD)]
POWER STEERING PRESSURE SENSOR
POWER STEERING PRESSURE SENSOR
PFP:49763
Component DescriptionEBS00KLG
Power steering pressure (PSP) sensor is installed to the power
steering high-pressure tube and detects a power steering load. This
sensor is a potentiometer which transforms the power steering load
into output voltage, and emits the voltage signal to the ECM. The
ECM controls the electric throttle control actuator and adjusts the
throttle valve opening angle to increase the engine speed and
adjusts the idle speed for the increased load.
CONSULT-II Reference Value in Data Monitor ModeEBS00KLH
Specification data are reference values.
MBIB0250E
MONITOR ITEM CONDITION SPECIFICATION
PW/ST SIGNAL
●Engine: After warming up, idle
the engineSteering wheel is in neutral position.
(Forward direction)OFF
Steering wheel is turned. ON

EC-710
[QG (WITHOUT EURO-OBD)]
ELECTRICAL LOAD SIGNAL
ELECTRICAL LOAD SIGNAL
PFP:25350
DescriptionEBS00KMB
The electrical load signals except headlamp switch signal are transferred through the CAN communication
line.
CONSULT-II Reference Value in Data Monitor ModeEBS00KMC
Specification data are reference values.
MONITOR ITEM CONDITION SPECIFICATION
LOAD SIGNAL
●Ignition switch: ONRear window defogger switch is ON and/or
lighting switch is 2nd.ON
Rear window defogger switch is OFF and light-
ing switch is OFF.OFF

ELECTRICAL LOAD SIGNAL
EC-711
[QG (WITHOUT EURO-OBD)]
C
D
E
F
G
H
I
J
K
L
MA
EC
Wiring DiagramEBS00KMD
YEC311A

EC-712
[QG (WITHOUT EURO-OBD)]
ELECTRICAL LOAD SIGNAL
Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
Diagnostic ProcedureEBS00KME
1. CHECK LOAD SIGNAL CIRCUIT OVERALL FUNCTION-I
With CONSULT-II
1. Turn ignition switch “ON”.
2. Connect CONSULT-II and select “DATA MONITOR” mode.
3. Select “LOAD SIGNAL” and check indication under the following
conditions.
OK or NG
OK (With CONSULT-II)>>GO TO 2.
OK (Without CONSULT-II)>>GO TO 3.
NG >> GO TO 4.
2. CHECK LOAD SIGNAL CIRCUIT OVERALL FUNCTION-II
With CONSULT-II
Check “LOAD SIGNAL” indication under the following conditions.
OK or NG
OK >>INSPECTION END
NG >> GO TO 5.
TER-
MINAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
84 R/YElectrical load signal
(Headlamp signal)[Ignition switch “ON”]
●Lighting switch is “2nd” position.BATTERY VOLTAGE
(11 - 14V)
[Ignition switch “ON”]
●Lighting switch is “OFF”.Approximately 0V
Condition Indication
Rear window defogger switch “ON” ON
Rear window defogger switch “OFF” OFF
PBIB0103E
Condition Indication
Lighting switch “ON” at 2nd position ON
Lighting switch “OFF” OFF
PBIB0103E

ELECTRICAL LOAD SIGNAL
EC-713
[QG (WITHOUT EURO-OBD)]
C
D
E
F
G
H
I
J
K
L
MA
EC
3.CHECK LOAD SIGNAL CIRCUIT OVERALL FUNCTION-II
Without CONSULT-II
Check voltage between ECM terminal 84 and ground under the fol-
lowing conditions.
OK or NG
OK >>INSPECTION END
NG >> GO TO 5.
4.CHECK REAR WINDOW DEFOGGER SYSTEM
Refer to EL-173.
>>INSPECTION END
5.CHECK HEADLAMP FUNCTION
1. Turn lighting switch “ON” at 2nd position.
2. Check that headlamps are illuminated.
OK or NG
OK >> GO TO 6.
NG >> Refer to EL-42 or EL-46.
6.CHECK HEADLAMP INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
WITHOUT DAYTIME LIGHT SYSTEM
1. Turn ignition switch “OFF”.
2. Disconnect ECM harness connector.
3. Disconnect lighting switch harness connector.
4. Check harness continuity between ECM terminal 84 and lighting switch terminal 10.
Refer to Wiring Diagram.
5. Also check harness for short to ground and short to power.
WITH DAYTIME LIGHT SYSTEM
1. Turn ignition switch “OFF”.
2. Disconnect ECM harness connector.
3. Disconnect daytime light relay.
4. Check harness continuity between ECM terminal 84 and daytime light relay terminal 3.
Refer to Wiring Diagram.
5. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 8.
NG >> GO TO 7.
Condition Voltage
Lighting switch “ON” at 2nd position Battery voltage
Lighting switch “OFF” Approximately 0V
MBIB0158E
Continuity should exist.
Continuity should exist.

EC-714
[QG (WITHOUT EURO-OBD)]
ELECTRICAL LOAD SIGNAL
7. DETECT MALFUNCTIONING PART
Check the following.
●Harness connectors E75, F36
●harness for open and short between ECM and lighting switch
●harness for open and short between ECM and daytime light relay
>> Repair open circuit or short to ground or short to power in harness or connectors.
8. CHECK INTERMITTENT INCIDENT
Refer to EC-485, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
>>INSPECTION END