Nissan Murano Z50 (2006 year). Manual — part 84
TROUBLE DIAGNOSIS
EC-123
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REAL TIME DIAGNOSIS IN DATA MONITOR MODE (RECORDING VEHICLE DATA)
Description
CONSULT-II 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 identified on the CONSULT-II screen
in real time.
In other words, DTC/1st trip DTC and malfunction item will be
displayed if the malfunction is detected by ECM.
At the moment a malfunction is detected by ECM, “MONI-
TOR” in “DATA MONITOR” screen is changed to “Recording
Data ... xx%” as shown at right, and the data after the mal-
function detection is recorded. Then when the percentage
reached 100%, “REAL-TIME DIAG” screen is displayed. If
“STOP” is touched on the screen during “Recording Data ...
xx%”, “REAL-TIME DIAG” screen is also displayed.
The recording time after the malfunction detection and the
recording speed can be changed by “TRIGGER POINT” and
“Recording Speed”. Refer to CONSULT-II OPERATION MAN-
UAL.
2.
“MANU TRIG” (Manual trigger):
●
DTC/1st trip DTC and malfunction item will not be displayed
automatically on CONSULT-II screen even though a malfunc-
tion is detected by ECM.
DATA MONITOR can be performed continuously even though
a malfunction is detected.
SEF705Y
SEF707X
EC-124
TROUBLE DIAGNOSIS
Revision: 2006 August
2006 Murano
Operation
1.
“AUTO TRIG”
●
While trying to detect the DTC/1st trip DTC by performing the DTC Confirmation Procedure, be sure to
select to “DATA MONITOR (AUTO TRIG)” mode. You can confirm the malfunction at the moment it is
detected.
●
While narrowing down the possible causes, CONSULT-II should be set in “DATA MONITOR (AUTO
TRIG)” mode, especially in case the incident is intermittent.
When you are inspecting the circuit by gently shaking (or twisting) the suspicious connectors, compo-
nents and harness in the DTC Confirmation Procedure, the moment a malfunction is found the DTC/1st
trip DTC will be displayed. (Refer to INCIDENT SIMULATION TESTS in
cient Diagnosis for an Electrical Incident"
.)
2.
“MANU TRIG”
●
If the malfunction is displayed as soon as “DATA MONITOR” is selected, reset CONSULT-II to “MANU
TRIG”. By selecting “MANU TRIG” you can monitor and store the data. The data can be utilized for fur-
ther diagnosis, such as a comparison with the value for the normal operating condition.
Generic Scan Tool (GST) Function
NBS002ZO
DESCRIPTION
Generic Scan Tool (OBDII scan tool) complying with SAE J1978 has
8 different functions explained below.
ISO9141 is used as the protocol.
The name GST or Generic Scan Tool is used in this service manual.
PBIB0197E
SEF139P
TROUBLE DIAGNOSIS
EC-125
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FUNCTION
INSPECTION PROCEDURE
1.
Turn ignition switch OFF.
2.
Connect GST to data link connector, which is located under LH
dash panel near the hood opener handle.
Diagnostic test mode
Function
Service $01
READINESS TESTS
This diagnostic service gains access to current emission-related data values, including
analog inputs and outputs, digital inputs and outputs, and system status information.
Service $02
(FREEZE DATA)
This diagnostic service gains access to emission-related data value which were stored by
ECM during the freeze frame. For details, refer to
Service $03
DTCs
This diagnostic service gains access to emission-related power train trouble codes which
were stored by ECM.
Service $04
CLEAR DIAG INFO
This diagnostic service can clear all emission-related diagnostic information. This
includes:
●
Clear number of diagnostic trouble codes (Service $01)
●
Clear diagnostic trouble codes (Service $03)
●
Clear trouble code for freeze frame data (Service $01)
●
Clear freeze frame data (Service $02)
●
Reset status of system monitoring test (Service $01)
●
Clear on board monitoring test results (Service $06 and $07)
Service $06
(ON BOARD TESTS)
This diagnostic service accesses the results of on board diagnostic monitoring tests of
specific components/systems that are not continuously monitored.
Service $07
(ON BOARD TESTS)
This diagnostic service enables the off board test drive to obtain test results for emission-
related powertrain components/systems that are continuously monitored during normal
driving conditions.
Service $08
—
This diagnostic service can close EVAP system in ignition switch ON position (Engine
stopped). When this diagnostic service is performed, the EVAP canister vent control
valve can be closed.
In the following conditions, this diagnostic service cannot function.
●
Low ambient temperature
●
Low battery voltage
●
Engine running
●
Ignition switch OFF
●
Low fuel temperature
●
Too much pressure is applied to EVAP system
Service $09
(CALIBRATION ID)
This diagnostic service enables the off-board test device to request specific vehicle infor-
mation such as Vehicle Identification Number (VIN) and Calibration IDs.
PBIB1300E
EC-126
TROUBLE DIAGNOSIS
Revision: 2006 August
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3.
Turn ignition switch ON.
4.
Enter the program according to instruction on the screen or in
the operation manual.
(*: Regarding GST screens in this section, sample screens are
shown.)
5.
Perform each diagnostic mode according to each service proce-
dure.
For further information, see the GST Operation Manual of
the tool maker.
SEF398S
SEF416S
TROUBLE DIAGNOSIS
EC-127
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CONSULT-II Reference Value in Data Monitor
NBS002ZP
Remarks:
●
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, because the monitor may show the specification data in
spite of the ignition timing not being adjusted to the specification data. This IGN TIMING monitors the data calculated by the ECM
according to the signals input from the camshaft position sensor and other ignition timing related sensors.
MONITOR ITEM
CONDITION
SPECIFICATION
ENG SPEED
●
Run engine and compare CONSULT-II value with the tachometer indica-
tion.
Almost the same speed as the
tachometer indication.
MAS A/F SE-B1
●
See
EC-132, "TROUBLE DIAGNOSIS - SPECIFICATION VALUE"
.
B/FUEL SCHDL
●
See
EC-132, "TROUBLE DIAGNOSIS - SPECIFICATION VALUE"
.
A/F ALPHA-B1
A/F ALPHA-B2
●
See
EC-132, "TROUBLE DIAGNOSIS - SPECIFICATION VALUE"
.
COOLAN TEMP/S
●
Engine: After warming up
More than 70
°
C (158
°
F)
A/F SEN1 (B1)
A/F SEN1 (B2)
●
Engine: After warming up
Maintaining engine speed at 2,000
rpm
Fluctuates around 1.5 V
HO2S2 (B1)
HO2S2 (B2)
●
Revving engine from idle to 3,000 rpm quickly after the following condi-
tions are met
–
Engine: After warming up
–
Keeping the engine speed between 3,500 and 4,000 rpm for 1 minute and
at idle for 1 minute under no load
0 - 0.3V
←→
Approx. 0.6 -
1.0V
HO2S2 MNTR (B1)
HO2S2 MNTR (B2)
LEAN
←→
RICH
VHCL SPEED SE
●
Turn drive wheels and compare CONSULT-II value with the speedometer
indication.
Almost the same speed as the
speedometer indication
BATTERY VOLT
●
Ignition switch: ON (Engine stopped)
11 - 14V
ACCEL SEN 1
ACCEL SEN 2*
●
Ignition switch: ON
(Engine stopped)
Accelerator pedal: Fully released
0.5 - 1.0V
Accelerator pedal: Fully depressed
4.2 - 4.8V
THRTL SEN 1
THRTL SEN 2*
●
Ignition switch: ON
(Engine stopped)
●
Shift lever: D
Accelerator pedal: Fully released
More than 0.36V
Accelerator pedal: Fully depressed
Less than 4.75V
EVAP SYS PRES
●
Ignition switch: ON
Approx. 1.8 - 4.8V
START SIGNAL
●
Ignition switch: ON
→
START
→
ON
OFF
→
ON
→
OFF
CLSD THL POS
●
Ignition switch: ON
(Engine stopped)
Accelerator pedal: Fully released
ON
Accelerator pedal: Slightly depressed
OFF
AIR COND SIG
●
Engine: After warming up, idle
the engine
Air conditioner switch: OFF
OFF
Air conditioner switch: ON
(Compressor operates.)
ON
P/N POSI SW
●
Ignition switch: ON
Shift lever: P or N
ON
Shift lever: Except above
OFF
PW/ST SIGNAL
●
Engine: After warming up, idle
the engine
Steering wheel: Not being turned
OFF
Steering wheel: Being turned
ON
LOAD SIGNAL
●
Ignition switch: ON
Rear window defogger switch is ON
and/or lighting switch is in 2nd.
ON
Rear window defogger switch is OFF
and lighting switch is OFF.
OFF
IGNITION SW
●
Ignition switch: ON
→
OFF
→
ON
ON
→
OFF
→
ON
HEATER FAN SW
●
Engine: After warming up, idle
the engine
Heater fan: Operating
ON
Heater fan: Not operating
OFF
BRAKE SW
●
Ignition switch: ON
Brake pedal: Fully released
OFF
Brake pedal: Slightly depressed
ON
EC-128
TROUBLE DIAGNOSIS
Revision: 2006 August
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INJ PULSE-B1
INJ PULSE-B2
●
Engine: After warming up
●
Shift lever: P or N
●
Air conditioner switch: OFF
●
No load
Idle
2.0 - 3.0 msec
2,000 rpm
1.9 - 2.9 msec
IGN TIMING
●
Engine: After warming up
●
Shift lever: P or N
●
Air conditioner switch: OFF
●
No load
Idle
13
°
- 18
°
BTDC
2,000 rpm
25
°
- 45
°
BTDC
CAL/LD VALUE
●
Engine: After warming up
●
Shift lever: P or N
●
Air conditioner switch: OFF
●
No load
Idle
5% - 35%
2,500 rpm
5% - 35%
MASS AIRFLOW
●
Engine: After warming up
●
Shift lever: P or N
●
Air conditioner switch: OFF
●
No load
Idle
2.0 - 6.0 g·m/s
2,500 rpm
7.0 - 20.0 g·m/s
PURG VOL C/V
●
Engine: After warming up
●
Shift lever: P or N
●
Air conditioner switch: OFF
●
No load
Idle
(Accelerator pedal is not depressed
even slightly, after engine starting)
0%
2,000 rpm
—
INT/V TIM (B1)
INT/V TIM (B2)
●
Engine: After warming up
●
Shift lever: P or N
●
Air conditioner switch: OFF
●
No load
Idle
−
5
°
- 5
°
CA
2,000 rpm
Approx. 0
°
- 30
°
CA
INT/V SOL (B1)
INT/V SOL (B2)
●
Engine: After warming up
●
Shift lever: P or N
●
Air conditioner switch: OFF
●
No load
Idle
0% - 2%
2,000 rpm
Approx. 0% - 50%
VIAS S/V
●
Engine: After warming up
1,800 - 3,600 rpm
ON
Except above conditions
OFF
AIR COND RLY
●
Engine: After warming up, idle
the engine
Air conditioner switch: OFF
OFF
Air conditioner switch: ON
(Compressor operates)
ON
ENGINE MOUNT
●
Engine: After warming up
Below 950 rpm
IDLE
Above 950 rpm
TRVL
FUEL PUMP RLY
●
For 1 second after turning ignition switch ON
●
Engine running or cranking
ON
●
Except above conditions
OFF
VENT CONT/V
●
Ignition switch: ON
OFF
THRTL RELAY
●
Ignition switch: ON
ON
COOLING FAN
●
Engine: After warming up, idle
the engine
●
Air conditioner switch: OFF
Engine coolant temperature is 97
°
C
(206
°
F) or less
OFF
Engine coolant temperature is
between 95
°
C (203
°
F) and 98
°
C
(208
°
F)
LOW
Engine coolant temperature is 100
°
C
(212
°
F) or more
HI
MONITOR ITEM
CONDITION
SPECIFICATION
TROUBLE DIAGNOSIS
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*: Accelerator pedal position sensor 2 signal and throttle position sensor 2 signal are converted by ECM internally. Thus, they differ from
ECM terminals voltage signal.
HO2S2 HTR (B1)
HO2S2 HTR (B2)
●
Engine speed: Below 3,600 rpm after the following conditions are met.
–
Engine: After warming up
–
Keeping the engine speed between 3,500 and 4,000 rpm for 1 minute and
at idle for 1 minute under no load
ON
●
Engine speed: Above 3,600 rpm
OFF
I/P PULLY SPD
●
Vehicle speed: More than 20 km/h (12 MPH)
Almost the same speed as the
tachometer indication
VEHICLE SPEED
●
Turn drive wheels and compare CONSULT-II value with the speedometer
indication.
Almost the same speed as the
speedometer indication
TRVL AFTER MIL
●
Ignition switch: ON
Vehicle has traveled after MIL has
turned ON.
0 - 65,535 km
(0 - 40,723 mile)
A/F S1 HTR (B1)
A/F S1 HTR (B2)
●
Engine: After warming up, idle the engine
0 - 100%
AC PRESS SEN
●
Engine: Idle
●
Both A/C switch and blower fan switch: ON (Compressor operates)
1.0 - 4.0V
VHCL SPEED SE
●
Turn drive wheels and compare CONSULT-II value with the speedometer
indication.
Almost the same speed as the
speedometer indication
SET VHCL SPD
●
Engine: Running
ASCD: Operating.
The preset vehicle speed is
displayed.
MAIN SW
●
Ignition switch: ON
MAIN switch: Pressed
ON
MAIN switch: Released
OFF
CANCEL SW
●
Ignition switch: ON
CANCEL switch: Pressed
ON
CANCEL switch: Released
OFF
RESUME/ACC SW
●
Ignition switch: ON
RESUME/ACCELERATE switch:
Pressed
ON
RESUME/ACCELERATE switch:
Released
OFF
SET SW
●
Ignition switch: ON
SET/COAST switch: Pressed
ON
SET/COAST switch: Released
OFF
BRAKE SW1
●
Ignition switch: ON
Brake pedal: Fully released
ON
Brake pedal: Slightly depressed
OFF
BRAKE SW2
●
Ignition switch: ON
Brake pedal: Fully released
OFF
Brake pedal: Slightly depressed
ON
CRUISE LAMP
●
Ignition switch: ON
MAIN switch: Pressed at the 1st time
→
at the 2nd time
ON
→
OFF
SET LAMP
●
MAIN switch: ON
●
When vehicle speed is between
40 km/h (25 MPH) and 144 km/h
(89 MPH)
ASCD: Operating
ON
ASCD: Not operating
OFF
MONITOR ITEM
CONDITION
SPECIFICATION
EC-130
TROUBLE DIAGNOSIS
Revision: 2006 August
2006 Murano
Major Sensor Reference Graph in Data Monitor Mode
NBS002ZQ
The following are the major sensor reference graphs in “DATA MONITOR” mode.
CLSD THL POS, ACCEL SEN 1, THRTL SEN 1
Below is the data for “CLSD THL POS”, “ACCEL SEN 1” and “THRTL SEN 1” when depressing the accelera-
tor pedal with the ignition switch ON and with shift lever in D position.
The signal of “ACCEL SEN 1” and “THRTL SEN 1” should rise gradually without any intermittent drop or rise
after “CLSD THL POS” is changed from ON to OFF.
ENG SPEED, MAS A/F SE-B1, THRTL SEN 1, HO2S2 (B1), INJ PULSE-B1
Below is the data for “ENG SPEED”, “MAS A/F SE-B1”, “THRTL SEN 1”, “HO2S2 (B1)” and “INJ PULSE-B1”
when revving engine quickly up to 4,800 rpm under no load after warming up engine sufficiently.
Each value is for reference, the exact value may vary.
PBIB0198E
PBIB2445E
TROUBLE DIAGNOSIS
EC-131
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PBIB2099E
EC-132
TROUBLE DIAGNOSIS - SPECIFICATION VALUE
Revision: 2006 August
2006 Murano
TROUBLE DIAGNOSIS - SPECIFICATION VALUE
PFP:00031
Description
NBS002ZR
The specification (SP) value indicates the tolerance of the value that is displayed in “DATA MONITOR (SPEC)”
mode of CONSULT-II during normal operation of the Engine Control System. When the value in “DATA MONI-
TOR (SPEC)” mode is within the SP value, the Engine Control System is confirmed OK. When the value in
“DATA MONITOR (SPEC)” mode is NOT within the SP value, the Engine Control System may have one or
more malfunctions.
The SP value is used to detect malfunctions that may affect the Engine Control System, but will not light the
MIL.
The SP value will be displayed for the following three items:
●
B/FUEL SCHDL (The fuel injection pulse width programmed into ECM prior to any learned on board cor-
rection)
●
A/F ALPHA-B1/B2 (The mean value of air-fuel ratio feedback correction factor per cycle)
●
MAS A/F SE-B1 (The signal voltage of the mass air flow sensor)
Testing Condition
NBS002ZS
●
Vehicle driven distance: More than 5,000 km (3,107 miles)
●
Barometric pressure: 98.3 - 104.3 kPa (1.003 - 1.064 kg/cm
2
, 14.25 - 15.12 psi)
●
Atmospheric temperature: 20 - 30
°
C (68 - 86
°
F)
●
Engine coolant temperature: 75 - 95
°
C (167 - 203
°
F)
●
Transmission: Warmed-up*
1
●
Electrical load: Not applied*
2
●
Engine speed: Idle
*1: After the engine is warmed up to normal operating temperature, drive vehicle until “FLUID TEMP SE” (CVT
fluid temperature sensor signal) indicates more than 60
°
C (140
°
F).
*2: Rear window defogger switch, air conditioner switch, lighting switch are OFF. Steering wheel is straight
ahead.
Inspection Procedure
NBS002ZT
NOTE:
Perform “DATA MONITOR (SPEC)” mode in maximum scale display.
1.
Perform
2.
Confirm that the testing conditions indicated above are met.
3.
Select “B/FUEL SCHDL”, “A/F ALPHA-B1”, “A/F ALPHA-B2”
and “MAS A/F SE-B1” in “DATA MONITOR (SPEC)” mode with
CONSULT-II.
4.
Make sure that monitor items are within the SP value.
5.
If NG, go to
EC-133, "Diagnostic Procedure"
SEF601Z
TROUBLE DIAGNOSIS - SPECIFICATION VALUE
EC-133
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Diagnostic Procedure
NBS002ZU
OVERALL SEQUENCE
PBIB2268E
EC-134
TROUBLE DIAGNOSIS - SPECIFICATION VALUE
Revision: 2006 August
2006 Murano
PBIB3214E
TROUBLE DIAGNOSIS - SPECIFICATION VALUE
EC-135
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DETAILED PROCEDURE
1.
CHECK “A/F ALPHA-B1”, “A/F ALPHA-B2”
1.
Start engine.
2.
Confirm that the testing conditions are met. Refer to
.
3.
Select “A/F ALPHA-B1”, “A/F ALPHA-B2” in “DATA MONITOR
(SPEC)” mode, and make sure that the each indication is within
the SP value.
NOTE:
Check “A/F ALPHA-B1”, “A/F ALPHA-B2” for approximately 1
minute because they may fluctuate. It is NG if the indication is
out of the SP value even a little.
OK or NG
OK
>> GO TO 17.
NG (Less than the SP value)>>GO TO 2.
NG (More than the SP value)>>GO TO 3.
2.
CHECK “B/FUEL SCHDL”
Select “B/FUEL SCHDL” in “DATA MONITOR (SPEC)” mode, and
make sure that the indication is within the SP value.
OK or NG
OK
>> GO TO 4.
NG (More than the SP value)>>GO TO 19.
3.
CHECK “B/FUEL SCHDL”
Select “B/FUEL SCHDL” in “DATA MONITOR (SPEC)” mode, and
make sure that the indication is within the SP value.
OK or NG
OK
>> GO TO 6.
NG (More than the SP value)>>GO TO 6.
NG (Less than the SP value)>>GO TO 25.
4.
CHECK “A/F ALPHA-B1”, “A/F ALPHA-B2”
1.
Stop the engine.
2.
Disconnect PCV hose, and then plug it.
3.
Start engine.
4.
Select “A/F ALPHA-B1”, “A/F ALPHA-B2” in “DATA MONITOR (SPEC)” mode, and make sure that the
each indication is within the SP value.
OK or NG
OK
>> GO TO 5.
NG
>> GO TO 6.
PBIB2369E
PBIB2332E
PBIB2332E
EC-136
TROUBLE DIAGNOSIS - SPECIFICATION VALUE
Revision: 2006 August
2006 Murano
5.
CHANGE ENGINE OIL
1.
Stop the engine.
2.
Change engine oil.
NOTE:
This symptom may occur when a large amount of gasoline is mixed with engine oil because of driving
conditions (such as when engine oil temperature does not rise enough since a journey distance is too
short during winter). The symptom will not be detected after changing engine oil or changing driving con-
dition.
>> INSPECTION END
6.
CHECK FUEL PRESSURE
Check fuel pressure. (Refer to
OK or NG
OK
>> GO TO 9.
NG (Fuel pressure is too high)>>Replace fuel pressure regulator, refer to
NG (Fuel pressure is too low)>>GO TO 7.
7.
DETECT MALFUNCTIONING PART
1.
Check the following.
–
Clogged and bent fuel hose and fuel tube
–
Clogged fuel filter
–
Fuel pump and its circuit (Refer to
2.
If NG, repair or replace the malfunctioning part. (Refer to
.)
If OK, replace fuel pressure regulator.
>> GO TO 8.
8.
CHECK “A/F ALPHA-B1”, “A/F ALPHA-B2”
1.
Start engine.
2.
Select “A/F ALPHA-B1”, “A/F ALPHA-B2” in “DATA MONITOR (SPEC)” mode, and make sure that the
each indication is within the SP value.
OK or NG
OK
>> INSPECTION END
NG
>> GO TO 9.
9.
PERFORM POWER BALANCE TEST
1.
Perform “POWER BALANCE” in “ACTIVE TEST” mode.
2.
Make sure that the each cylinder produces a momentary engine
speed drop.
OK or NG
OK
>> GO TO 12.
NG
>> GO TO 10.
PBIB0133E
TROUBLE DIAGNOSIS - SPECIFICATION VALUE
EC-137
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10.
DETECT MALFUNCTIONING PART
1.
Check the following.
–
Ignition coil and its circuit (Refer to
.)
–
Fuel injector and its circuit (Refer to
–
Intake air leakage
–
Low compression pressure (Refer to
EM-96, "CHECKING COMPRESSION PRESSURE"
2.
If NG, repair or replace the malfunctioning part.
If OK, replace fuel injector. (It may be caused by leakage from fuel injector or clogging.)
>> GO TO 11.
11.
CHECK “A/F ALPHA-B1”, “A/F ALPHA-B2”
1.
Start engine.
2.
Select “A/F ALPHA-B1”, “A/F ALPHA-B2” in “DATA MONITOR (SPEC)” mode, and make sure that the
each indication is within the SP value.
OK or NG
OK
>> INSPECTION END
NG
>> GO TO 12.
12.
CHECK A/F SENSOR 1 FUNCTION
Perform all DTC Confirmation Procedure related with A/F sensor 1.
●
For DTC P0130, P0150, refer to
EC-229, "DTC Confirmation Procedure"
●
For DTC P0131, P0151, refer to
EC-240, "DTC Confirmation Procedure"
●
For DTC P0132, P0152, refer to
EC-250, "DTC Confirmation Procedure"
●
For DTC P0133, P0153, refer to
EC-261, "DTC Confirmation Procedure"
●
For DTC P2A00, P2A03, refer to
EC-598, "DTC Confirmation Procedure"
.
OK or NG
OK
>> GO TO 15.
NG
>> GO TO 13.
13.
CHECK A/F SENSOR 1 CIRCUIT
Perform Diagnostic Procedure according to corresponding DTC.
>> GO TO 14.
14.
CHECK “A/F ALPHA-B1”, “A/F ALPHA-B2”
1.
Start engine.
2.
Select “A/F ALPHA-B1”, “A/F ALPHA-B2” in “DATA MONITOR (SPEC)” mode, and make sure that the
each indication is within the SP value.
OK or NG
OK
>> INSPECTION END
NG
>> GO TO 15.
15.
DISCONNECT AND RECONNECT ECM HARNESS CONNECTOR
1.
Stop the engine.
2.
Disconnect ECM harness connector. Check pin terminal and connector for damage, and then reconnect it.
>> GO TO 16.
EC-138
TROUBLE DIAGNOSIS - SPECIFICATION VALUE
Revision: 2006 August
2006 Murano
16.
CHECK “A/F ALPHA-B1”, “A/F ALPHA-B2”
1.
Start engine.
2.
Select “A/F ALPHA-B1”, “A/F ALPHA-B2” in “DATA MONITOR (SPEC)” mode, and make sure that the
each indication is within the SP value.
OK or NG
OK
>> INSPECTION END
NG
>> Detect malfunctioning part according to
17.
CHECK “B/FUEL SCHDL”
Select “B/FUEL SCHDL” in “DATA MONITOR (SPEC)” mode, and
make sure that the indication is within the SP value.
OK or NG
OK
>> INSPECTION END
NG (More than the SP value)>>GO TO 18.
NG (Less than the SP value)>>GO TO 25.
18.
DETECT MALFUNCTIONING PART
1.
Check for the cause of large engine friction. Refer to the following.
–
Engine oil level is too high
–
Engine oil viscosity
–
Belt tension of power steering, alternator, A/C compressor, etc. is excessive
–
Noise from engine
–
Noise from transmission, etc.
2.
Check for the cause of insufficient combustion. Refer to the following.
–
Valve clearance malfunction
–
Intake valve timing control function malfunction
–
Camshaft sprocket installation malfunction, etc.
>> Repair or replace malfunctioning part, and then GO TO 30.
19.
CHECK INTAKE SYSTEM
Check for the cause of uneven air flow through mass air flow sensor. Refer to the following.
●
Crushed air ducts
●
Malfunctioning seal of air cleaner element
●
Uneven dirt of air cleaner element
●
Improper specification of intake air system
OK or NG
OK
>> GO TO 21.
NG
>> Repair or replace malfunctioning part, and then GO TO 20.
PBIB2332E
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