1998 NISSAN PICK-UP sensor

SEF259QA
.pedal
.pedal
TROUBLE DIAGNOSIS Ð General DescriptionKA
Major Sensor Reference Graph in Data
Monitor Mode (Cont'd)
EC-67

TERMINAL
NO.WIRE
COLORITEM CONDITIONDATA
(DC voltage)
4 L/RECCS relay (Self-
shutoff)Engine is running.
Ignition switch ``OFF''
For a few seconds after turning ignition
switch ``OFF''0-1V
Ignition switch ``OFF''
A few seconds passed after turning ignition
switch ``OFF''BATTERY VOLTAGE
(11 - 14V)
6 B/P ECCS groundEngine is running.
Idle speedEngine ground
7W
Data link connec-
tor for CONSULTEngine is running.
Idle speedConnect CONSULT and select DATA
MONITOR mode.Approximately 0.1V
14 Y/RApproximately 3.5V
15 LApproximately4-6V
23 LApproximately 0V
11 G/RAir conditioner
relayEngine is running.
Both air conditioner switch and blower fan
switch are ``ON''. (Compressor operates.)Approximately 1V
Engine is running.
Air conditioner switch is ``OFF''.BATTERY VOLTAGE
(11 - 14V)
12 G/YSwirl control valve
control solenoid
valveEngine is running.
Idle speed0-1V
Engine is running.
Engine speed is above 3,600 rpm.BATTERY VOLTAGE
(11 - 14V)
13 B/P ECCS groundEngine is running.
Idle speedEngine ground
16 BMass air flow
sensorEngine is running.
(Warm-up condition)
Idle speed1.3 - 1.7V
Engine is running.
(Warm-up condition)
Engine speed is 2,500 rpm.1.7 - 2.1V
17 WMass air flow
sensor groundEngine is running.
(Warm-up condition)
Idle speed0.005 - 0.02V
18 LG/REngine coolant
temperature sen-
sorEngine is running.
Approximately 0 - 4.8V
Output voltage varies with
engine coolant temperature.
19 WHeated oxygen
sensorEngine is running.
After warming up sufficiently and engine
speed is 2,000 rpm0 - Approximately 1.0V
(periodically change)
20 LGThrottle position
sensorIgnition switch ``ON''
(Warm-up condition)
Accelerator pedal released0.35 - 0.65V
Ignition switch ``ON''
Accelerator pedal fully depressedApproximately 4V
21
29B/G
B/GSensors' groundEngine is running.
(Warm-up condition)
Idle speed0.001 - 0.02V
TROUBLE DIAGNOSIS Ð General DescriptionKA
ECM Terminals and Reference Value
(Cont'd)
EC-70

TERMINAL
NO.WIRE
COLORITEM CONDITIONDATA
(DC voltage)
22
30WCamshaft position
sensor (REF)
(180É signal)Engine is running.
(Warm-up condition)
Idle speedApproximately 0.4V
SEF064U
Engine is running.(Warm-up condition)
Engine speed is 2,000 rpm.Approximately 0.4V
SEF065U
24 R/WMalfunction indi-
cator lampIgnition switch ``ON''
Approximately 1.5V
Engine is running.
Idle speedBATTERY VOLTAGE
(11 - 14V)
26 Y/LIntake air tem-
perature sensorEngine is running.
Approximately 0 - 4.8V
Output voltage varies with
intake air temperature.
31
40BCamshaft position
sensor (POS)
(1É signal)Engine is running.
(Warm-up condition)
Idle speedApproximately 2.5V
SEF066U
Engine is running.(Warm-up condition)
Engine speed is 2,000 rpm.Approximately 2.5V
SEF067U
TROUBLE DIAGNOSIS Ð General DescriptionKA
ECM Terminals and Reference Value
(Cont'd)
EC-71

TERMINAL
NO.WIRE
COLORITEM CONDITIONDATA
(DC voltage)
32 W/LVehicle speed
sensorIgnition switch ``ON''
Jack up all wheels and run engine at idle in
1st position.Varies from 0 to 5V
SEF068U
34 B/Y Start signalIgnition switch ``ON''
Approximately 0V
Ignition switch ``START''
BATTERY VOLTAGE
(11 - 14V)
35 L/BNeutral position
switchIgnition switch ``ON''
Neutral position0V
Ignition switch ``ON''
Except the above gear positionApproximately 5V
36 B/L Ignition switchIgnition switch ``OFF''
0V
Ignition switch ``ON''
BATTERY VOLTAGE
(11 - 14V)
37 PUThrottle position
sensor power sup-
plyIgnition switch ``ON''
Approximately 5V
38
47B/WPower supply for
ECMIgnition switch ``ON''
BATTERY VOLTAGE
(11 - 14V)
39 B ECCS groundEngine is running.
Idle speedEngine ground
41 YAir conditioner
switchEngine is running.
Both air conditioner switch and blower fan
switch are ``ON''. (Compressor operates.)Approximately 0V
Engine is running.
Air conditioner switch is ``OFF''.BATTERY VOLTAGE
(11 - 14V)
43 GPower steering oil
pressure switchEngine is running.
Steering wheel is being turned.0V
Engine is running.
Steering wheel is not being turned.Approximately 5V
46 GY/LPower supply
(Back-up)Ignition switch ``OFF''
BATTERY VOLTAGE
(11 - 14V)
48 B ECCS groundEngine is running.
Idle speedEngine ground
TROUBLE DIAGNOSIS Ð General DescriptionKA
ECM Terminals and Reference Value
(Cont'd)
EC-72

TERMINAL
NO.WIRE
COLORITEM CONDITIONDATA
(DC voltage)
101
103
110
112W/B
W/R
W/L
W/GInjector No. 1
Injector No. 3
Injector No. 2
Injector No. 4Engine is running.
(Warm-up condition)
Idle speedBATTERY VOLTAGE
(11 - 14V)
SEF069U
Engine is running.
Engine speed is 2,000 rpm.BATTERY VOLTAGE
(11 - 14V)
SEF070U
104 W/R Fuel pump relayIgnition switch ``ON''
For 5 seconds after turning ignition switch
``ON''
Engine is running.Approximately 1V
Ignition switch ``ON''
5 seconds after turning ignition switch ``ON''BATTERY VOLTAGE
(11 - 14V)
105 W/LEVAP canister
purge control
solenoid valveEngine is running.
(Warm-up condition)
Idle speedBATTERY VOLTAGE
(11 - 14V)
Engine is running.
(Warm-up condition)
Engine is above 3,800 rpm.Approximately 1V
107
108B/P ECCS groundEngine is running.
Idle speedEngine ground
109 B/W Current returnEngine is running.
Idle speedBATTERY VOLTAGE
(11 - 14V)
113 W/G IACV-AAC valveEngine is running.
Idle speed10 - 13V
Engine is running.
Steering wheel is being turned.Air conditioner is operating.Rear window defogger switch is ``ON''.Lighting switch is ``ON''.5 - 10V
114 RHeated oxygen
sensor heaterEngine is running.
Engine speed is below 3,200 rpm.Approximately 0V
Engine is running.
Engine speed is above 3,200 rpm.BATTERY VOLTAGE
(11 - 14V)
TROUBLE DIAGNOSIS Ð General DescriptionKA
ECM Terminals and Reference Value
(Cont'd)
EC-73

Camshaft Position Sensor (CMPS)
COMPONENT DESCRIPTION
The camshaft position sensor is a basic component of the ECCS.
It monitors engine speed and piston position. These input signals
to the ECM are used to control fuel injection, ignition timing and
other functions.
The camshaft position sensor has a rotor plate and a wave-
forming circuit. The rotor plate has 360 slits for a 1É signal and
4 slits for a 180É signal. The wave-forming circuit consists of
Light Emitting Diodes (LED) and photo diodes.
The rotor plate is positioned between the LED and the photo
diode. The LED transmits light to the photo diode. As the rotor
plate turns, the slits cut the light to generate rough-shaped
pulses. These pulses are converted into on-off signals by the
wave-forming circuit and sent to the ECM.
The distributor is not repairable and must be replaced as an
assembly, except distributor cap.
SEF998R
SEF853B
TROUBLE DIAGNOSIS FOR ``CAMSHAFT POSI SEN'' (DTC 11)KA
EC-82

ECM TERMINALS AND REFERENCE VALUE
Remarks: Specification data are reference values, and are measured between each terminal andV39(ECCS ground) with a voltme-
ter.
TER-
MINAL
NO.WIRE
COLORITEM CONDITIONDATA
(DC voltage)
22
30W
WCamshaft position sensor
(REF) (180É signal)Engine is running.
(Warm-up condition)
Idle speedApproximately 0.4V
SEF064U
Engine is running.(Warm-up condition)
Engine speed is 2,000 rpm.Approximately 0.4V
SEF065U
31
40B
BCamshaft position sensor
(POS) (1É signal)Engine is running.
(Warm-up condition)
Idle speedApproximately 2.5V
SEF066U
Engine is running.(Warm-up condition)
Engine speed is 2,000 rpm.Approximately 2.5V
SEF067U
ON BOARD DIAGNOSIS LOGIC
Diagnostic
Trouble Code
No.Malfunction is detected when ....Check Items
(Possible Cause)
TROUBLE DIAGNOSIS FOR ``CAMSHAFT POSI SEN'' (DTC 11)KA
Camshaft Position Sensor (CMPS) (Cont'd)
EC-83

11lEither 1É or 180É signal is not sent to ECM for the first
few seconds during engine cranking.
.......................................................................................lHarness or connectors
(The camshaft position sensor circuit is open or
shorted.)
lCamshaft position sensorlStarter motor (Refer to EL section.)lStarting system circuit (Refer to EL section.)lDead (Weak) battery
lEither 1É or 180É signal is not sent to ECM during
engine running.
.......................................................................................
lEither 1É or 180É signal is not in the normal pattern
during engine running.
DIAGNOSTIC TROUBLE CODE CONFIRMATION
PROCEDURE
Before performing the following procedure, confirm that
battery voltage is more than 10V.
1) Turn ignition switch ``ON'' and select ``DATA MONI-
TOR'' mode with CONSULT.
2) Start engine and run it for at least 2 seconds at idle
speed.
(If engine does not run, turn ignition switch to ``START''
for at least 2 seconds.)
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------OR-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
1) Start engine and run it for at least 2 seconds at idle
speed.
(If engine does not run, turn ignition switch to ``START''
for at least 2 seconds.)
2) Turn ignition switch ``OFF'', wait at least 5 seconds and
then turn ``ON''.
3) Perform ``Diagnostic Test Mode II (Self-diagnostic
results)'' with ECM.
SEF051U
TROUBLE DIAGNOSIS FOR ``CAMSHAFT POSI SEN'' (DTC 11)KA
Camshaft Position Sensor (CMPS) (Cont'd)
EC-84