2001 NISSAN ALMERA turn signal

14 RESET THROTTLE POSITION SENSOR IDLE POSITION MEMORY
With CONSULT-II
NOTE:
Always warm up engine to normal operating temperature. If engine is cool, the throttle position sensor idle posi-
tion memory will not be reset correctly.
1. Confirm that proper vacuum is applied. Refer to Test No. 10.
2. Attach blind cap to vacuum port from which vacuum hose to throttle opener was disconnected.
3. Start engine.
4. Warm up engine to normal operating temperature.
5. Select ªTP SW/TP SEN IDLE POSI ADJº in ªWORK SUPPORTº mode.
6. Stop engine. (Turn ignition switch ªOFFº.)
7. Turn ignition switch ªONº and wait at least 5 seconds.
SEF864V
8. Turn ignition switch ªOFFº and wait at least 9 seconds.
9. Repeat steps 7 and 8 until ªCLSD THL POSº signal changes to ªONº.
SEF715Y
©GO TO 19.
TROUBLE DIAGNOSIS Ð BASIC INSPECTIONQG
Basic Inspection/Hatchback (Cont'd)
EC-136

SYMPTOM
Reference
page
HARD/NO START/RESTART (EXCP. HA)
ENGINE STALL
HESITATION/SURGING/FLAT SPOT
SPARK KNOCK/DETONATION
LACK OF POWER/POOR ACCELERATION
HIGH IDLE/LOW IDLE
ROUGH IDLE/HUNTING
IDLING VIBRATION
SLOW/NO RETURN TO IDLE
OVERHEATS/WATER TEMPERATURE HIGH
EXCESSIVE FUEL CONSUMPTION
EXCESSIVE OIL CONSUMPTION
BATTERY DEAD (UNDER CHARGE)
Warranty symptom code AA AB AC AD AE AF AG AH AJ AK AL AM HA
Crankshaft position sensor (POS)
circuit22EC-328
Camshaft position sensor
(PHASE) circuit3 2 3 EC-335
Mass air flow sensor circuit11222 22 2EC-187
Heated oxygen sensor 1 (front)
circuit1232 22 2EC-216,
224
Engine coolant temperature sen-
sor circuit112323223 2EC-201,
203
Throttle position sensor circuit 1 222222 2EC-207
Incorrect throttle position sensor
adjustment31 11111 1EC-519
Vehicle speed sensor circuit 2 3 3 3 EC-370
Knock sensor circuit 2 3 EC-324
ECM 22333333333EC-391,
154
Start signal circuit 2EC-558
PNP switch circuit 3 3 3 3 3 EC-437
Power steering oil pressure switch
circuit2 3 3 EC-568
Electrical load signal circuit 3 3 EC-578
1 - 6: The numbers refer to the order of inspection.
(continued on next page)
TROUBLE DIAGNOSIS Ð GENERAL DESCRIPTIONQG
Symptom Matrix Chart (Cont'd)
EC-156

CONSULT-II Reference Value in Data Monitor
Mode
NJEC0042Remarks:
+Specification data are reference values.
+Specification data are output/input values which are detected or supplied by the ECM at the connector.
* Specification data may not be directly related to their components signals/values/operations.
(i.e., Adjust ignition timing with a timing light before monitoring IGN TIMING. Specification data might be displayed even when igni-
tion timing is not adjusted to specification. This IGN TIMING monitors the data calculated by the ECM according to the input signals
from the crankshaft position sensor and other ignition timing related sensors.)
+If the real-time diagnosis results are NG, and the on board diagnostic system results are OK, when diagnosing the mass air flow sensor,
first check to see if the fuel pump control circuit is normal.
MONITOR ITEM CONDITION SPECIFICATION
ENG SPEED+Tachometer: Connect
+Run engine and compare tachometer indication with the CONSULT-II
value.Almost the same speed as the
CONSULT-II value.
MAS A/F SE-B1+Engine: After warming up
+Air conditioner switch: OFF
+Shift lever: ªNº
+No-loadIdle 1.0 - 1.7V
2,500 rpm 1.5 - 2.1V
B/FUEL SCHDL+Engine: After warming up
+Air conditioner switch: OFF
+Shift lever: ªNº
+No-loadIdle 1.5 - 3.0 msec
2,000 rpm 1.2 - 3.0 msec
A/F ALPHA-B1+Engine: After warming upMaintaining engine speed at 2,000
rpm75 - 125%
COOLAN TEMP/S+Engine: After warming up More than 70ÉC (158ÉF)
HO2S1 (B1)
+Engine: After warming upMaintaining engine speed at 2,000
rpm0 - 0.3V¨0.6 - 1.0V
HO2S1 MNTR (B1)LEAN¨RICH
Changes more than 5 times
during 10 seconds.
HO2S2 (B1)
+Engine: After warming upRevving engine from idle to 3,000
rpm quickly0 - 0.3V¨0.6 - 1.0V
HO2S2 MNTR (B1)LEAN¨RICH
VHCL SPEED SE+Turn drive wheels and compare speedometer indication with the CON-
SULT-II valueAlmost the same speed as the
CONSULT-II value
BATTERY VOLT+Ignition switch: ON (Engine stopped) 11 - 14V
THRTL POS SEN+Engine: Idle Throttle valve fully closed 0.15 - 0.85V
+Ignition switch: ON
(Engine stopped)Throttle valve fully opened 3.5 - 4.7V
EGR TEMP SEN*+Engine: After warming up Less than 4.5V
START SIGNAL+Ignition switch: ON®START®ON OFF®ON®OFF
CLSD THL POS
CLSD THL/P SW*+Engine: Idle Throttle valve: Idle position ON
+Ignition switch: ON
(Engine stopped)Throttle valve: Slightly open OFF
AIR COND SIG+Engine: After warming up, idle
the engineA/C switch ªOFFº OFF
A/C switch ªONº
(Compressor operates)ON
P/N POSI SW+Ignition switch: ONShift lever ªPº or ªNº ON
Except above OFF
TROUBLE DIAGNOSIS Ð GENERAL DESCRIPTIONQG
CONSULT-II Reference Value in Data Monitor Mode
EC-159

MONITOR ITEM CONDITION SPECIFICATION
PW/ST SIGNAL+Engine: After warming up, idle
the engineSteering wheel in neutral position
(forward direction)OFF
The steering wheel is turned ON
LOAD SIGNAL+Engine: runningRear window defogger or headlamp
ªONºON
Except the above OFF
IGNITION SW+Ignition switch: ON®OFF ON®OFF
HEATER FAN SW+Heater fan switch is ªONº ON
+Heater fan switch is ªOFFº OFF
INJ PULSE-B1+Engine: After warming up
+Air conditioner switch: OFF
+Shift lever: ªNº
+No-loadIdle 2.0 - 3.5 msec
2,000 rpm 1.5 - 3.5 msec
IGN TIMING+Engine: After warming up
+Air conditioner switch: OFF
+Shift lever: ªNº
+No-loadIdleM/T: 8ɱ5É BTDC
A/T: 10ɱ5É BTDC
2,000 rpm Approx. 30É BTDC
CAL/LD VALUE+Engine: After warming up
+Air conditioner switch: OFF
+Shift lever: ªNº
+No-loadIdle Not used
2,500 rpm Not used
ABSOL TH´P/S+Engine: Idle Throttle valve fully closed 0.0É
+Ignition switch: ON
(Engine stopped)Throttle valve fully opened Approx. 80É
MASS AIRFLOW+Engine: After warming up
+Air conditioner switch: OFF
+Shift lever: N
+No-loadIdle 1.0 - 4.0 g´m/s
2,500 rpm 5.0 - 10.0 g´m/s
IACV-AAC/V+Engine: After warming up
+Air conditioner switch: OFF
+Shift lever: ªNº
+No-loadIdle 5 - 25 steps
2,000 rpm Ð
PURG VOL C/V+Engine: After warming up
+No-loadIdle 0%
Revving engine Ð
EGR VOL CON/V*+Engine: After warming up
+Shift lever: ªNº
+No-loadIdle 0 step
Revving engine up to 3,000 rpm
quickly1 - 10 steps
SWRL CONT S/V*+Engine speed: IdleEngine coolant temperature is
between 15ÉC (59ÉF) to 40ÉC
(104ÉF)ON
Engine coolant temperature is above
40ÉC (104ÉF)OFF
INT/V SOL-B1+Engine: After warming up
+Lift up drive wheelsIdle OFF
Suitable gear position except ªPº or
ªNº and revving engineON (Momentarily)
AIR COND RLY+Air conditioner switch: OFF®ON OFF®ON
TROUBLE DIAGNOSIS Ð GENERAL DESCRIPTIONQG
CONSULT-II Reference Value in Data Monitor Mode (Cont'd)
EC-160

MONITOR ITEM CONDITION SPECIFICATION
FUEL PUMP RLY+Ignition switch is turned to ON (Operates for 1 second)
+Engine running and cranking
+When engine is stopped (stops in 1.5 seconds)ON
+Except as shown above OFF
COOLING FAN+After warming up engine, idle
the engine.
+Air conditioner switch: OFFEngine coolant temperature is 99ÉC
(210ÉF) or lessOFF
Engine coolant temperature is 100ÉC
(212ÉF) or moreON
HO2S1 HTR (B1)+Engine speed: Below 3,200 rpm ON
+Engine speed: Above 3,200 rpm OFF
HO2S2 HTR (B1)+Engine speedBelow 3,600 rpm [After driving for 2
minutes at a speed of 70 km/h (43
MPH) or more]ON
Above 3,600 rpm OFF
+Ignition switch ON (Engine stopped) OFF
TRVL AFTER MI+Ignition switch: ONVehicle has traveled after MI has
turned ON.0 - 65,535 km
(0 - 40,723 mile)
*: If so equipped
Major Sensor Reference Graph in Data Monitor
Mode
NJEC0043The following are the major sensor reference graphs in ªDATA MONITORº mode.
THRTL POS SEN, ABSOL TH´P/S, CLSD THL/P SWNJEC0043S01Below is the data for ªTHRTL POS SENº, ªABSOL TH´P/Sº and ªCLSD THL/P SWº when depressing the
accelerator pedal with the ignition switch ªONº.
The signal of ªTHRTL POS SENº and ªABSOL TH´P/Sº should rise gradually without any intermittent drop or
rise after ªCLSD THL/P SWº is changed from ªONº to ªOFFº.
SEF240Y
TROUBLE DIAGNOSIS Ð GENERAL DESCRIPTIONQG
CONSULT-II Reference Value in Data Monitor Mode (Cont'd)
EC-161

TERMI-
NAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
13 LG/R Cooling fan relay[Engine is running]
+Cooling fan is not operatingBATTERY VOLTAGE
(11 - 14V)
[Engine is running]
+Cooling fan is operatingApproximately 0V
14 GY/LEVAP canister purge
volume control valve
(ON/OFF duty)[Engine is running]
+Warm-up condition
+Accelerator pedal depressed5 - 12V
SEF975W
19 BR/W A/T signal No. 5[Engine is running]
+Idle speedApproximately 8V
21 B/P Fuel pump relay[Ignition switch ªONº]
+For 1 second after turning ignition switch
ªONº
[Engine is running]0-1V
[Ignition switch ªONº]
+More than 1 second after turning ignition
switch ªONºBATTERY VOLTAGE
(11 - 14V)
22 OR/L Malfunction indicator[Ignition switch ªONº]0-1V
[Engine is running]
+Idle speedBATTERY VOLTAGE
(11 - 14V)
23 L Air conditioner relay[Engine is running]
+Both A/C switch and blower switch are ªONºApproximately 0V
[Engine is running]
+A/C switch is ªOFFºBATTERY VOLTAGE
(11 - 14V)
31 W/G ECM relay (Self shut-off)[Ignition switch ªOFFº]
+For 9 seconds after turning ignition switch
ªOFFº0-1V
[Ignition switch ªOFFº]
+9 seconds passed after turning ignition switch
ªOFFºBATTERY VOLTAGE
(11 - 14V)
32 L/OR Tachometer[Engine is running]
+Warm-up condition
+Idle speed7-8V
SEF928X
[Engine is running]
+Engine speed is 2,000 rpm7-8V
SEF929X
TROUBLE DIAGNOSIS Ð GENERAL DESCRIPTIONQG
ECM Terminals and Reference Value (Cont'd)
EC-167

TERMI-
NAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
35
36
37
38L/W
PU
L/R
GY/RIgnition signal (No. 1)
Ignition signal (No. 2)
Ignition signal (No. 3)
Ignition signal (No. 4)[Engine is running]
+Warm-up condition
+Idle speed0 - 0.2V
SEF971W
[Engine is running]
+Engine speed is 2,000 rpm0.2 - 0.4V
SEF972W
40* Y/PUThrottle position switch
(Closed position)[Engine is running]
+Accelerator pedal releasedBATTERY VOLTAGE
(11 - 14V)
[Engine is running]
+Accelerator pedal depressedApproximately 0V
41 B/Y Start signal[Ignition switch ªONº]Approximately 0V
[Ignition switch ªSTARTº]9 - 12V
42 G/OR PNP switch[Ignition switch ªONº]
+Gear position is ªNeutral positionº (M/T mod-
els)
+Gear position is ªPº or ªNº (A/T models)Approximately 0V
[Ignition switch ªONº]
+Except the above gear positionA/T models
BATTERY VOLTAGE
(11 - 14V)
M/T models
Approximately 5V
43 B/R Ignition switch[Ignition switch ªOFFº]0V
[Ignition switch ªONº]BATTERY VOLTAGE
(11 - 14V)
44 L/R Air conditioner switch[Engine is running]
+Both air conditioner switch and blower switch
are ªONº (Compressor operates)Approximately 0V
[Engine is running]
+Air conditioner switch is ªOFFºApproximately 5V
46 PU/WPower steering oil pres-
sure switch[Engine is running]
+Steering wheel is fully turnedApproximately 0V
[Engine is running]
+Steering wheel is not turnedApproximately 5V
48 B ECM ground[Engine is running]
+Idle speedEngine ground
TROUBLE DIAGNOSIS Ð GENERAL DESCRIPTIONQG
ECM Terminals and Reference Value (Cont'd)
EC-168

TERMI-
NAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
66
75R
RCamshaft position sen-
sor (PHASE)[Engine is running]
+Warm-up condition
+Idle speed2.0 - 3.0V
SEF977W
[Engine is running]
+Engine speed is 2,000 rpm2.0 - 3.0V
SEF978W
67 W/LPower supply for ECM
(Back-up)[Ignition switch ªOFFº]BATTERY VOLTAGE
(11 - 14V)
70 BR/WEngine coolant tempera-
ture sensor[Engine is running]Approximately 0 - 4.8V
Output voltage varies with
engine coolant temperature
71 GYThrottle position sensor
signal output[Engine is running]
+Warm-up condition
+Accelerator pedal fully releasedApproximately 0.4V
[Ignition switch ªONº]
+Accelerator pedal fully depressedApproximately 4V
72* P/B EGR temperature sensor[Engine is running]
+Warm-up condition
+Idle speedLess than 4.5V
[Engine is running]
+Warm-up condition
+EGR system is operating0 - 1.0V
73 BMass air flow sensor
ground[Engine is running]
+Warm-up condition
+Idle speedApproximately 0V
74 R/LRefrigerant pressure
sensor[Engine is running]
+Air conditioner switch is ªONº
(Compressor operates)1.0 - 4.0V
[Engine is running]
+Warm-up condition
+Idle speed
+Air conditioner switch is turned from ªONº to
ªOFFºVoltage is gradually decreasing.
81 W Knock sensor[Engine is running]
+Idle speed1.0 - 4.0V
82* L/WFuel tank temperature
sensor[Engine is running]Approximately 0 - 4.8V
Output voltage varies with fuel
temperature
TROUBLE DIAGNOSIS Ð GENERAL DESCRIPTIONQG
ECM Terminals and Reference Value (Cont'd)
EC-170