2006 NISSAN PATROL Service Manual

DIAGNOSTIC TEST MODE IÐBULB CHECK
In this mode, the MALFUNCTION INDICATOR LAMP on the instrument panel should stay ON. If it remains
OFF, check the bulb. Refer to EL section (``WARNING LAMPS AND CHIME'') or see EC-188.
DIAGNOSTIC TEST MODE IÐMALFUNCTION WARNING
MALFUNCTION
INDICATOR LAMPCondition
ONWhen the malfunction is detected or the ECM's CPU is malfunctioning. (Refer to ``MIL Illumination'' of the
``DIAGNOSTIC TROUBLE CODE INDEX'', EC-1.)
OFF No malfunction.
+These Diagnostic Trouble Code Numbers are clari®ed in Diagnostic Test Mode II (SELF-DIAGNOSTIC
RESULTS).
DIAGNOSTIC TEST MODE IIÐSELF-DIAGNOSTIC RESULTS
In this mode, a diagnostic trouble code is indicated by the number of blinks of the MALFUNCTION INDICA-
TOR LAMP as shown below.
Long (0.6 second) blinking indicates the number of ten digits, and short (0.3 second) blinking indicates the
number of single digits. For example, the malfunction indicator lamp blinks 4 times for 5 seconds (0.6 sec x
4 times) and then it blinks three times for about 1 second (0.3 sec x 3 times). This indicates the DTC ``43''
and refers to the malfunction of the accelerator position sensor circuit.
In this way, all the detected malfunctions are classi®ed by their diagnostic trouble code numbers. The DTC
``55'' refers to no malfunction. (See DIAGNOSTIC TROUBLE CODE INDEX, EC-1.)
HOW TO ERASE DIAGNOSTIC TEST MODE II (Self-diagnostic results)
The diagnostic trouble code can be erased from the backup memory in the ECM when the diagnostic test mode
is changed from Diagnostic Test Mode II to Diagnostic Test Mode I. (Refer to ``HOW TO SWITCH DIAGNOS-
TIC TEST MODES'' on previous page.)
+If the battery terminal is disconnected, the diagnostic trouble code will be lost from the backup
memory within 24 hours.
+Be careful not to erase the stored memory before starting trouble diagnoses.
+If the MIL blinks or ``NATS MALFUNCTION'' is displayed on
``SELF-DIAG RESULTS'' screen, perform self-diagnostic
results mode with CONSULT using NATS program card
(NATS-E940). Refer to EL section.
+Con®rm no self-diagnostic results of NATS is displayed
before touching ``ERASE'' in ``SELF-DIAG RESULTS'' mode
with CONSULT.
+When replacing ECM, initialisation of NATS V2.0 system
and registration of all NATS V2.0 ignition key IDs must be
carried out with CONSULT using NATS program card
(NATS-E940).
Therefore, be sure to receive all keys from vehicle owner.
Regarding the procedures of NATS initialisation and NATS
ignition key ID registration, refer to CONSULT operation
manual, NATS V2.0.
SEF212NA
SEF288Q
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
Malfunction Indicator Lamp (MIL) (Cont'd)
EC-34

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

CONSULT
CONSULT INSPECTION PROCEDURE
1. Turn off ignition switch.
2. Connect ``CONSULT'' to data link connector for CONSULT.
(Data link connector for CONSULT is located under the hood
opener.)
3. Turn on ignition switch.
4. Touch ``START''.
5. Touch ``ENGINE''.
6. Perform each diagnostic test mode according to each service
procedure.
For further information, see the CONSULT Operation Manual.
SEF669V
SEF895K
SEF660S
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
EC-36

ECCS COMPONENT PARTS/CONTROL SYSTEMS APPLICATION
ItemDIAGNOSTIC TEST MODE
SELF-DIAG-
NOSTIC
RESULTSDATA
MONITORACTIVE
TEST
ECCS COMPONENT PARTS
INPUTCamshaft position sensor (PUMP) X X
Engine coolant temperature sensor X X
Control sleeve position sensor X X
Fuel temperature sensor X X
Vehicle speed sensor X X
Accelerator position sensor X X X
Accelerator position switch X X
Accelerator switch (F/C) X X
Crankshaft position sensor (TDC) X X
Needle lift sensor X
Ignition switch (start signal) X
Neutral position switch X
Battery voltage X
Air conditioner switch X
Heat up switch X
Mass air ¯ow sensor X X
Charge air temperature sensor X
OUTPUTInjection timing control valve X X X
Fuel cut solenoid valve X X X
Glow relayXX
EGRC-solenoid valve A, B & throttle control solenoid valve X X
Cooling fan relay X X
Charge air cooler fan relay X
X: Applicable
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
CONSULT (Cont'd)
EC-37

SELF-DIAGNOSTIC MODE
Regarding items detected in ``SELF-DIAG RESULTS'' mode, refer to ``DIAGNOSTIC TROUBLE CODE
INDEX'', EC-1.
DATA MONITOR MODE
Monitored item
[Unit]ECM
input
signalsMain
signalsDescription Remarks
CKPSzRPM
(TDC) [rpm]
jj
+The engine speed computed from the
crankshaft position sensor (TDC) signal
is displayed.
CKPSzRPM
(REF) [rpm]
jj
+The engine speed [determined by the
time between pulses from the crankshaft
position sensor (TDC) signal] is dis-
played.
CMPSzRPM -
PUMP [rpm]
jj
+The engine speed computed from the
camshaft position sensor (PUMP) signal
is displayed.
COOLAN TEMP/S
[ÉC] or [ÉF]
jj
+The engine coolant temperature (deter-
mined by the signal voltage of the engine
coolant temperature sensor) is displayed.+When the engine coolant temperature
sensor is open or short-circuited, ECM
enters fail-safe mode. The engine cool-
ant temperature determined by the ECM
is displayed.
VHCL SPEED SE
[km/h] or [mph]
jj+The vehicle speed computed from the
vehicle speed sensor signal is displayed.
FUEL TEMP SEN
[ÉC] or [ÉF]
jj
+The fuel temperature (determined by the
signal voltage of the fuel temperature
sensor) is displayed.
ACCEL POS SEN [V]
jj+The accelerator position sensor signal
voltage is displayed.
FULL ACCEL SW
[ON/OFF]
jj+Indicates [ON/OFF] condition from the
accelerator position switch signal.
ACCEL SW (FC)
[OPEN/CLOSE]
jj+Indicates [OPEN/CLOSE] condition from
the accelerator switch (FC) signal.
OFF ACCEL SW
[ON/OFF]
jj+Indicates [ON/OFF] condition from the
accelerator position switch signal.
C/SLEEV POS/S [V]
jj+The control sleeve position sensor signal
voltage is displayed.
BATTERY VOLT [V]
jj+The power supply voltage of ECM is dis-
played.
P/N POSI SW
[ON/OFF]
jj+Indicates [ON/OFF] condition from the
park/neutral position switch signal.
START SIGNAL
[ON/OFF]
jj+Indicates [ON/OFF] condition from the
starter signal.+After starting the engine, [OFF] is dis-
played regardless of the starter signal.
NOTE:
Any monitored item that does not match the vehicle being diagnosed is deleted from the display automatically.
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
CONSULT (Cont'd)
EC-38

Monitored item
[Unit]ECM
input
signalsMain
signalsDescription Remarks
AIR COND SIG
[ON/OFF]
jj
+Indicates [ON/OFF] condition of the air
conditioner switch as determined by the
air conditioner signal.
IGN SW
[ON/OFF]
jj+Indicates [ON/OFF] condition from igni-
tion switch signal.
MAS AIR/FL SE [V]
jj+The signal voltage of the mass air ¯ow
sensor is displayed.+When the engine is stopped, a certain
value is indicated.
ACT INJ TIMG [É]
jj
+The actual injection timing angle deter-
mined by the ECM (an approximate
average angle between injection start
and end from TDC) is displayed.
INJ TIMG C/V [%]+Indicates the duty ratio of fuel injection
timing control valve.
DECELER F/CUT
[ON/OFF]
j
+Indicates [ON/OFF] condition from decel-
eration fuel cut signal.+When the accelerator pedal is released
quickly with engine speed at 3,000 rpm
or more, ``ON'' is displayed.
FUEL CUT S/V
[ON/OFF]
j
+The control condition of the fuel cut sole-
noid valve (determined by ECM accord-
ing to the input signal) is indicted.
+OFF ... Fuel cut solenoid valve is not
operating.
ON ... Fuel cut solenoid valve is operat-
ing.+When the fuel cut solenoid valve is not
operating, fuel is not supplied to injection
nozzles.
GLOW RLY [ON/OFF]
j
+The glow relay control condition (deter-
mined by ECM according to the input
signal) is displayed.
COOLING FAN
[LOW/HI/OFF]
j
+Indicates the control condition of the
cooling fans (determined by ECM
according to the input signal).
+LOW ... Operates at low speed.
HI ... Operates at high speed.
OFF ... Stopped.
I/C FAN RLY
[ON/OFF]
j
+Indicates the control condition of the
charge air cooler fan (determined by
ECM according to the input signals).
EGRC SOL/V A
[ON/OFF]+The control condition of the EGRC-sole-
noid valve A (determined by ECM
according to the input signal) is indi-
cated.
+OFF ... EGRC-solenoid valve A is not
operating.
ON ... EGRC-solenoid valve A is operat-
ing.
EGRC SOL/V B
[ON/OFF]+The control condition of the EGRC-sole-
noid valve B (determined by ECM
according to the input signal) is indi-
cated.
+OFF ... EGRC-solenoid valve B is not
operating.
ON ... EGRC-solenoid valve B is operat-
ing.
THROT RLY
[ON/OFF]+The control condition of the throttle con-
trol solenoid valve (determined by ECM
according to the input signal) is indi-
cated.
+OFF ... Throttle control solenoid valve is
not operating.
ON ... Throttle control solenoid valve is
operating.
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
CONSULT (Cont'd)
EC-39

ACTIVE TEST MODE
TEST ITEM CONDITION JUDGEMENT CHECK ITEM (REMEDY)
COOLING FAN+Ignition switch: ON
+Operate the cooling fan at
``LOW'', ``HI'' speed and turn
``OFF'' using CONSULT.Cooling fan moves at ``LOW'', ``HI''
speed and stops.+Harness and connector
+Cooling fan motor
OFF ACCEL PO
SIG+Clears the self-learning fully closed accelerator position, detected by accelerator position sensor, from the
ECM.
FUEL CUT SOL/V+Ignition switch: ON
+Turn solenoid valve ``ON'' and
``OFF'' with the CONSULT and
listen to operating sound.Solenoid valve makes an operating
sound.+Harness and connector
+Solenoid valve
EGRC SOL/V A+Ignition switch: ON
+Turn solenoid valve ``ON'' and
``OFF'' with the CONSULT and
listen to operating sound.Solenoid valve makes an operating
sound.+Harness and connector
+Solenoid valve
EGRC SOL/V B+Ignition switch: ON
+Turn solenoid valve ``ON'' and
``OFF'' with the CONSULT and
listen to operating sound.Solenoid valve makes an operating
sound.+Harness and connector
+Solenoid valve
THROT CONT
SOL/V+Ignition switch: ON
+Turn solenoid valve ``ON'' and
``OFF'' with the CONSULT and
listen to operating sound.Solenoid valve makes an operating
sound.+Harness and connector
+Solenoid valve
GLOW RLY+Ignition switch: ON (Engine
stopped)
+Turn the glow relay ``ON'' and
``OFF'' using CONSULT and
listen to operating sound.Glow relay makes the operating
sound.+Harness and connector
+Glow relay
INJ TIMING+Engine: Return to the original
trouble condition
+Retard the injection timing using
CONSULT.If trouble symptom disappears, see
CHECK ITEM.+Adjust initial injection timing
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
CONSULT (Cont'd)
EC-40

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