1998 NISSAN PATROL dtc 67

RELATIONSHIP BETWEEN MIL, DTC, CONSULT AND DRIVING PATTERNS
*1: When a malfunction is detected, MIL will light up.
*2: When the same malfunction is detected in two consecutive
driving patterns, MIL will stay lit up.
*3: MIL will go off after vehicle is driven three times without
any malfunctions.
*4: When a malfunction is detected for the ®rst time, the DTC
will be stored in ECM.*5: The DTC will not be displayed any longer after vehicle is
driven 40 times without the same malfunction.
(The DTC still remain in ECM.)
*6: Other screens except SELF-DIAGNOSTIC RESULTS &
DATA MONITOR (AUTO TRIG) cannot display the mal-
function. DATA MONITOR (AUTO TRIG) can display the
malfunction at the moment it is detected.
SEF659S
RUN (ON)
STOP (OFF)
ON
OFF
DISPLAY
NO
DISPLAY
DTC exists
DTC does
not exist
COUNTER Driving Pattern
Engine
(GN)
MIL
ECM Diagnostic
trouble
code
CONSULT
SELF-
DIAGNOSTIC
RESULTS
SCREEN
&
DATA MONITOR
(AUTO TRIG) SCREEN
SELF-
DIAGNOSTIC
RESULTS
SCREENNG DetectionThis driving pattern does not satisfy
self-diagnostic condition.
This driving pattern satis®es
self-diagnostic condition.
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
Malfunction Indicator Lamp (MIL) (Cont'd)
EC-35

REAL TIME DIAGNOSIS IN DATA MONITOR MODE
CONSULT has two kinds of triggers and they can be selected by touching ``SETTING'' in ``DATA MONITOR''
mode.
1. ``AUTO TRIG'' (Automatic trigger):
+The malfunction will be identi®ed on the CONSULT screen in real time.
In other words, the malfunction item will be displayed at the moment the malfunction is detected by
ECM.
DATA MONITOR can be performed continuously until a malfunction is detected. However, DATA
MONITOR cannot continue any longer after the malfunction detection.
2. ``MANU TRIG'' (Manual trigger):
+The malfunction item will not be displayed automatically on CONSULT screen even though a malfunc-
tion is detected by ECM.
DATA MONITOR can be performed continuously even though a malfunction is detected.
Use these triggers as follows:
1. ``AUTO TRIG''
+While trying to detect the DTC by performing the ``DTC CONFIRMATION PROCEDURE'', be sure to
select to ``DATA MONITOR (AUTO TRIG)'' mode. You can con®rm the malfunction at the moment it is
detected.
+While narrowing down the possible causes, CONSULT should be set in ``DATA MONITOR (AUTO
TRIG)'' mode, especially in case the incident is intermittent.
Inspect the circuit by gently shaking (or twisting) suspicious connectors, components and harness in
the ``DTC CONFIRMATION PROCEDURE''. The moment a malfunction is found the malfunction item
will be displayed. (Refer to GI section, ``Incident Simulation Tests'' in ``HOW TO PERFORM EFFICIENT
DIAGNOSIS FOR AN ELECTRICAL INCIDENT''.)
2. ``MANU TRIG''
+If the malfunction is displayed as soon as ``DATA MONITOR'' is selected, reset CONSULT to ``MANU
TRIG''. By selecting ``MANU TRIG'' you can monitor and store the data. The data can be utilized for
further diagnosis, such as a comparison with the value for the normal operating condition.
SEF529Q
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
CONSULT (Cont'd)
EC-41

Work Flow
CHECK IN
CHECK INCIDENT CONDITIONS.
Listen to customer complaints. (Get symptoms.).................................................
STEP I
Check andPRINT OUT(write down) Diagnostic Trouble Code (DTC).
Then clear. Also check related service bulletins for information.
...........................................
STEP II
Symptoms
collected.No symptoms, except MIL
lights up, or Malfunction
Code exists at STEP II.
Verify the symptom by driving in the condition the cus-
tomer described.
.
*1
.............................................................................................
STEP III
Normal Code
(at STEP II)
Malfunction Code
(at STEP II)
INCIDENT CONFIRMATION
Verify the DTC by performing the ``DTC CONFIRMATION PROCEDURE''.
*1
...........................................
STEP IV
cChoose the appropriate action.
Malfunction Code (at STEP II or IV) Normal Code (at both STEP II and IV)...........................................
*2STEP V
BASIC INSPECTION
SYMPTOM BASIS (at STEP I or III)
................................................................
c
Perform inspections
according to Symptom
Matrix Chart.
.
TROUBLE DIAGNOSIS FOR DTC XX.STEP VI
REPAIR/REPLACE
NGFINAL CHECK
Con®rm that the incident is completely ®xed by performing BASIC INSPECTION and
DTC CONFIRMATION PROCEDURE (or OVERALL FUNCTION CHECK). Then,
erase the unnecessary (already ®xed) DTCs in ECM.
OK...........................................
STEP VII
CHECK OUT
*1: If the incident cannot be duplicated, refer to GI section (``Incident Simulation Tests'', ``HOW TO PERFORM EFFICIENT
DIAGNOSIS FOR AN ELECTRICAL INCIDENT'').
*2: If the on board diagnostic system cannot be performed, check main power supply and ground circuit. Refer to
``TROUBLE DIAGNOSIS FOR POWER SUPPLY'', EC-63.
.
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TROUBLE DIAGNOSIS Ð Work Flow
EC-44

Description for Work Flow
STEP DESCRIPTION
STEP IGet detailed information about the conditions and the environment when the incident/symptom occurred using the
``DIAGNOSTIC WORKSHEET'' as shown on EC-43.
STEP IIBefore con®rming the concern, check and write down (print out using CONSULT) the Diagnostic Trouble Code
(DTC), then erase the code. Refer to EC-30.
Study the relationship between the cause, speci®ed by DTC, and the symptom described by the customer. (The
``Symptom Matrix Chart'' will be useful. Refer to EC-48.)
STEP IIITry to con®rm the symptom and under what conditions the incident occurs.
The ``DIAGNOSTIC WORK SHEET'' is useful to verify the incident. Connect CONSULT to the vehicle in DATA
MONITOR (AUTO TRIG) mode and check real time diagnosis results.
If the incident cannot be veri®ed, perform INCIDENT SIMULATION TESTS. Refer to GI section.
If the malfunction code is detected, skip STEP IV and perform STEP V.
STEP IVTry to detect the Diagnostic Trouble Code (DTC) by driving in (or performing) the ``DTC CONFIRMATION PROCE-
DURE''. Check and read the DTC by using CONSULT.
During the DTC veri®cation, be sure to connect CONSULT to the vehicle in DATA MONITOR (AUTO TRIG) mode
and check real time diagnosis results.
If the incident cannot be veri®ed, perform INCIDENT SIMULATION TESTS. Refer to GI section.
In case the ``DTC CONFIRMATION PROCEDURE'' is not available, perform the ``OVERALL FUNCTION CHECK''
instead. The DTC cannot be displayed by this check, however, this simpli®ed ``check'' is an effective alternative.
The ``NG'' result of the ``OVERALL FUNCTION CHECK'' is the same as the DTC detection.
STEP VTake the appropriate action based on the results of STEP I through IV.
If the malfunction code is indicated, proceed to TROUBLE DIAGNOSIS FOR DTC XX.
If the normal code is indicated, proceed to the BASIC INSPECTION. Refer to EC-46. Then perform inspections
according to the Symptom Matrix Chart. Refer to EC-48.
STEP VIIdentify where to begin diagnosis based on the relationship study between symptom and possible causes. Inspect
the system for mechanical binding, loose connectors or wiring damage using (tracing) ``Harness Layouts''.
Gently shake the related connectors, components or wiring harness with CONSULT set in ``DATA MONITOR
(AUTO TRIG)'' mode.
Check the voltage of the related ECM terminals or monitor the output data from the related sensors with CON-
SULT. Refer to EC-54.
The ``DIAGNOSTIC PROCEDURE'' in EC section contains a description based on open circuit inspection. A short
circuit inspection is also required for the circuit check in the DIAGNOSTIC PROCEDURE. For details, refer to GI
section (``Circuit Inspection'', ``HOW TO PERFORM EFFICIENT DIAGNOSIS FOR AN ELECTRICAL INCIDENT'').
Repair or replace the malfunction parts.
STEP VIIOnce you have repaired the circuit or replaced a component, you need to run the engine in the same conditions
and circumstances which resulted in the customer's initial complaint.
Perform the ``DTC CONFIRMATION PROCEDURE'' and con®rm the normal code (Diagnostic trouble code No. 55)
is detected. If the incident is still detected in the ®nal check, perform STEP VI by using a different method from the
previous one.
Before returning the vehicle to the customer, be sure to erase the unnecessary (already ®xed) DTC in ECM. (Refer
to EC-30.)
TROUBLE DIAGNOSIS Ð Work Flow
EC-45

Basic Inspection
Precaution:
Perform Basic Inspection without electrical or mechanical
loads applied;
+Headlamp switch is OFF,
+Air conditioner switch is OFF,
+Rear defogger switch is OFF,
+Steering wheel is in the straight-ahead position, etc.
BEFORE STARTING
1. Check service records for any recent
repairs that may indicate a related
problem, or the current need for sched-
uled maintenance.
2. Open engine hood and check the fol-
lowing:
+Harness connectors for improper con-
nections
+Vacuum hoses for splits, kinks, or
improper connections
+Wiring for improper connections,
pinches, or cuts
3. Using priming pump, bleed air from fuel
system. Refer to ``DRAINING WATER'',
``Checking and Replacing Fuel Filter
and Draining Water'' of ``ENGINE
MAINTENANCE'' in MA section.
CONNECT CONSULT TO THE VEHICLE.
Connect ``CONSULT'' to the data link con-
nector for CONSULT and select
``ENGINE'' from the menu. Refer to
EC-36.
DOES ENGINE START?
Ye s
cNo
Turn ignition switch OFF,
wait 5 seconds and then
start engine. If engine fails
to start, check diagnostic
trouble code (DTC).
Run engine for 10 minutes.
CHECK IDLE SPEED.
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Read engine idle speed in ``DATA
MONITOR'' mode with CONSULT.
--------------------------------------------------------------------------------------------------------------------------------------OR--------------------------------------------------------------------------------------------------------------------------------------
Check idle speed using tachom-
eter tester.
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
775 25 rpm
(Go tojAon next page.)
SEF142I
SEF670V
SEF669V
SEF714V
SEF671V
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TROUBLE DIAGNOSIS Ð Basic Inspection
EC-46

jA
CHECK INJECTION TIMING.
1. Set No. 1 piston at TDC on its com-
pression stroke.
2. Remove injection tubes and air bleeder
on the back of injection pump.
3. Set dial gauge so its indicator points to
somewhere between 1.0 and 2.0 mm
(0.039 and 0.079 in) on the scale.
4. Turn crankshaft 1 turn clockwise and
check that dial gauge indicates the
same value again.
5. Turn crankshaft counterclockwise about
100 degrees, then turn crankshaft
clockwise slowly, and set dial gauge
indicator to 0 mm at the position it
stops.
6. Turn crankshaft clockwise and set the
injection timing mark on the crankshaft
pulley to the timing indicator.
7. Read plunger lift.
Plunger lift:
0.92 0.04 mm (0.0362 0.0016 in)
+When repeating the checking, start
with step 5.
NG
cOK
+Bleed air from fuel sys-
tem.
+After this inspection,
unnecessary diagnostic
trouble code No. might
be displayed.
Erase the stored
memory in ECM.
Refer to ``ON BOARD
DIAGNOSTIC SYSTEM
DESCRIPTION'' (EC-30)
and ``HOW TO ERASE
DTC'' (EC-30).
OK
INSPECTION END
ADJUSTING
1. If plunger lift is not within the speci®ed
value, adjust by turning injection pump.
+If indication is smaller than the speci-
®ed value, turn pump body away
from engine.
+If indication is larger than the speci-
®ed value, turn pump body towards
engine.
2. Tighten injection pump securing bolts
and nuts.
Nut:
: 16-21Nzm
(1.6 - 2.1 kg-m, 12 - 15 ft-lb)
Bolt:
: 22-29Nzm
(2.2 - 3.0 kg-m, 16 - 22 ft-lb)
3. Remove dial gauge and install air
bleeder with new washer.
4. Install injection tubes.
Flare nut:
: 22-25Nzm
(2.2 - 2.5 kg-m, 16 - 18 ft-lb)
5. Bleed air from fuel system.
Refer to ``DRAINING WATER'', ``Check-
ing and Replacing Fuel Filter and
Draining Water'' of ``ENGINE MAINTE-
NANCE'' in MA section.
cGo to.
SEF672V
SEF664V
SEF673V
SEF666V
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TROUBLE DIAGNOSIS Ð Basic Inspection
Basic Inspection (Cont'd)
EC-47

Camshaft Position Sensor (CMPS) (PUMP)
The camshaft position sensor (PUMP) is located on the electronic
fuel injection pump.
The sensor consists of a permanent magnet, core and coil.
When engine is running, gap between sensor and drive shaft rotat-
ing plate will periodically change. Permeability near the sensor also
changes.
Due to the permeability change, the magnetic ¯ux near the core is
changed. Therefore, the voltage signal generated in the coil is
changed.
The ECM receives the voltage signal (6 pulses/2 engine revolu-
tions).
These signals are used for tachometer indication.
CONSULT REFERENCE VALUE IN DATA MONITOR MODE
Remarks: Speci®cation data are reference values.
MONITOR ITEM CONDITION SPECIFICATION
CKPSzRPM (REF)+Tachometer: Connect
+Run engine and compare tachometer indication with the CONSULT
value.Almost the same speed as the
CONSULT value.
CKPSzRPM-PUMP
ECM TERMINALS AND REFERENCE VALUE
Remarks: Speci®cation data are reference values and are measured between each terminal andV43(ECCS
ground) with a voltmeter.
TER-
MINAL
NO.WIRE
COLORITEM CONDITIONDATA
(DC Voltage and Pulse
Signal)
28
33BCamshaft position sensor
(PUMP) groundEngine is running.
(Warm-up condition)
Idle speedApproximately 0V
41
45WCamshaft position sensor
(PUMP)Engine is running.
(Warm-up condition)
Idle speedApproximately 0V
SEF722V
Engine is running.(Warm-up condition)
Engine speed is 2,000 rpm.Approximately 0V
SEF723V
SEF674V
TROUBLE DIAGNOSIS FOR ``CAM POS SEN (PUMP)'' (DTC 11)
EC-69

ON BOARD DIAGNOSIS LOGIC
Diagnostic
Trouble Code
No.Malfunction is detected when ....Check Items
(Possible cause)
11+An improper signal from the sensor is detected by
ECM during engine running.+Harness or connectors
[The camshaft position sensor (PUMP) circuit is open
or shorted.]
+Camshaft position sensor (PUMP)
DIAGNOSTIC TROUBLE CODE CONFIRMATION
PROCEDURE
1) Turn ignition switch ``ON'' and select ``DATA MONITOR''
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 ``ON''.
3) Perform ``Diagnostic Test Mode II (Self-diagnostic
results)'' with ECM.
SEF714V
TROUBLE DIAGNOSIS FOR ``CAM POS SEN (PUMP)'' (DTC 11)
Camshaft Position Sensor (CMPS) (PUMP)
(Cont'd)
EC-70