belt INFINITI FX35 2006 Workshop Manual

WARNING CHIME DI-69
C
D E
F
G H
I
J
L
M A
B
DI
Revision: 2006 December 2006 FX35/FX45
Terminals and Reference Value for Combination MeterNKS0030R
CONSULT-II Function (METER A/C AMP)NKS003HZ
Refer to DI-31, "CONSULT-II Function (METER A/C AMP)" in “UNIFIED METER AND A/C AMP”.
CONSULT-II Function (BCM)NKS003I0
CONSULT-II can display each diagnostic item using the diagnostic test modes shown following.
DIAGNOSIS ITEMS DESCRIPTION
CONSULT-II BASIC OPERATION
Refer to GI-38, "CONSULT-II Start Procedure" .
DATA MONITOR
Operation Procedure
1. Touch “BUZZER” on “SELECT TEST ITEM” screen.
2. Touch “DATA MONITOR” on “SELECT DIAG MODE” screen.
3. Touch “ALL SIGNALS” or “SELECTION FROM MENU” on “DATA MONITOR” screen.
4. If “SELECTION FROM MENU” is selected, touch the desired monitor item. If “ALL SIGNALS” is selected, all items required to control are monitored.
Terminal
No. Wire
color Item Measuring condition
Reference value
Ignition
switch Operation or condition
5 B Ground ON — Approx. 0 V
6
7 G/Y Ignition power supply ON — Battery voltage
8 R/W Battery power supply OFF — Battery voltage
9LG Seat belt buckle switch
(Driver side) ON Unfastened (ON) Approx. 0 V
Fastened (OFF) Approx. 12 V
13 L/B TX communication line (To
unified meter and A/C amp.) ON —
14 PU RX communication line
(From unified meter and A/C
amp.) ON —
15 B Ground ON — Approx. 0 V
SKIA3361E
SKIA3362E
System Test item Diagnosis mode Description Reference
page
BCM BUZZER DATA MONITOR Displays BCM input data in real time.
DI-69
ACTIVE TEST Operation of electrical loads can be checked by sending driving
signal to them. DI-70
BCM SELF-DIAG RESULTS BCM checks the conditions and displays memorized error.
DI-70
ALL SIGNALS Monitors all items.
SELECTION FROM MENU Selects and monitors items.

DI-70
WARNING CHIME
Revision: 2006 December 2006 FX35/FX45
5. Touch “START”.
6. During monitoring, touching “RECORD” can start recording the monitored item status.
Display Item List
ACTIVE TEST
Operation Procedure
1. Touch “BUZZER” on “SELECT TEST ITEM” screen.
2. Touch “ACTIVE TEST” on “SELECT DIAG MODE” screen.
3. Touch the item to be tested, and check the operation.
4. During the operation check, touching “OFF” deactivates the operation.
Display Item List
SELF-DIAG RESULTS
Operation Procedure
1. Touch “BCM” on “SELECT TEST ITEM” screen.
2. Touch “SELF-DIAG RESULTS” on “SELECT DIAG MODE” screen.
3. Self-diagnosis results are displayed.
Display Item List
NOTE:
If “CAN communication [U1000]” is indicated, after printing the monitor item, go to “LAN system”. Refer to
LAN-3, "
Precautions When Using CONSULT-II" .
Trouble DiagnosisNKS003I1
HOW TO PERFORM TROUBLE DIAGNOSIS
1. Confirm the symptom or customer complaint.
2. Understand operation description and function description. Refer to DI-56, "
System Description" .
3. Perform the preliminary inspection. Refer to DI-71, "
PRELIMINARY INSPECTION" .
4. Referring to trouble diagnosis chart, make sure the cause of the malfunction and repair or replace applica- ble parts. Refer to DI-71, "
Symptom Chart" .
5. Does the warning chime operate normally? If so, GO TO 6. If not, GO TO 3.
6. INSPECTION END
Monitored item Description
IGN ON SW Indicates [ON/OFF] condition of ignition switch.
KEY ON SW Indicates [ON/OFF] condition of key switch.
DOOR SW-DR Indicates [ON/OFF] condition of front door switch (driver side).
LIGHT SW 1ST Indicates [ON/OFF] condition of lighting switch.
BUCKLE SW Indicates [ON/OFF] condition of seat belt switch (driver side).
Test item Malfunction is detected when···
LIGHT WARN ALM This test is able to check light warning chime operation.
IGN KEY WARN ALM This test is able to check ignition key warning chime operation.
SEAT BELT WARN TEST This test is able to check seat belt warning chime operation.
Monitored Item CONSULT-ll display Description
CAN communication CAN communication [U1000] Malfunction is detected in CAN communication.

WARNING CHIME DI-71
C
D E
F
G H
I
J
L
M A
B
DI
Revision: 2006 December 2006 FX35/FX45
PRELIMINARY INSPECTION
1. CHECK BCM (CONSULT-II)
Perform self-diagnosis of BCM. Refer to DI-69, "
CONSULT-II Function (BCM)" .
Self
-diagnosis results
No malfunction detected >> GO TO 2.
Malfunction detected >> Check applicable parts, and repair or replace corresponding parts.
2. CHECK UNIFIED METER AND A/C AMP. (CONSULT-II)
Perform self-diagnosis of unified meter and A/C amp. Refer to DI-31, "
CONSULT-II Function (METER A/C
AMP)" .
Self
-diagnosis results
No malfunction detected >> INSPECTION END
Malfunction detected >> Check applicable parts, and repair or replace corresponding parts.
Symptom ChartNKS003I2
Power Supply and Ground Circuit InspectionNKS003I3
1. CHECK FUSE AND FUSIBLE LINK
Check for blown BCM fuses and fusible link.
OK or NG
OK >> GO TO 2.
NG >> Be sure to eliminate cause of malfunction before installing new fuse or fusible link. Refer to PG-3,
"POWER SUPPLY ROUTING CIRCUIT" .
Symptom Diagnoses/Service procedure
All warning chimes do not activate. Perform the following inspections.
1. DI-72, "
Combination Meter Buzzer Circuit Inspection".
2. DI-71, "
Power Supply and Ground Circuit Inspection".
Replace BCM, found normal function in the above inspections.
Ignition key
warning chime
does not acti-
vate. Without Intelligent Key.
Perform the following inspections.
1. DI-74, "
Front Door Switch (Driver Side) Signal Inspection".
2. DI-75, "
Key Switch Signal Inspection (Without Intelligent Key)".
Replace BCM, found normal function in the above inspections.
With Intelligent Key, when mechan-
ical key is used. Perform the following inspections.
1. DI-74, "
Front Door Switch (Driver Side) Signal Inspection".
2. DI-76, "
Key Switch and Ignition Knob Switch Signal Inspection (With Intelli-
gent Key, When Mechanical Key Is Used)".
Replace BCM, found normal function in the above inspections.
With Intelligent Key, when Intelli-
gent Key is carried with the driver. Refer to
BL-121, "
WARNING CHIME FUNCTION MALFUNCTION" .
Light warning chime does not activate. Perform the following inspections.
1. DI-74, "
Front Door Switch (Driver Side) Signal Inspection".
2. LT-120, "
Combination Switch Inspection".
Replace BCM, found normal function in the above inspections.
Seat belt warning chime does not activate. Perform
DI-78, "
Seat Belt Buckle Switch (Driver Side) Signal Inspection" .
Replace BCM, found normal function in the above inspection.
Power source Fuse and fusible link No.
Battery power supply M
22
Ignition power supply 1

DI-72
WARNING CHIME
Revision: 2006 December 2006 FX35/FX45
2. CHECK POWER SUPPLY CIRCUIT
Check voltage between BCM harness connector terminals and
ground.
OK or NG
OK >> GO TO 3.
NG >> Check harness between BCM and fuse.
3. CHECK GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect BCM connector.
3. Check continuity between BCM harness connector M35 terminal 52 and ground.
OK or NG
OK >> INSPECTION END
NG >> Repair harness or connector.
Combination Meter Buzzer Circuit InspectionNKS003I4
1. CHECK OPERATION OF COMBINATION METER BUZZER
1. Select “BUZZER” of “BCM” on CONSULT-ll.
2. Perform “LIGHT WARN ALM”, “IGN KEY WARN ALM” or “SEAT BELT WARN TEST” of “ACTIVE TEST”.
Does chime sound?
YES >> GO TO 4.
NO >> GO TO 2.
Terminals Ignition switch position
(+) (–) OFF ON
Connector Terminal
M34 38 Ground 0 V Battery voltage
M35 42
Battery voltage Battery voltage
55
PKIB3988E
52 – Ground : Continuity should exist.
PKIB5011E
SKIA6331E

DI-78
WARNING CHIME
Revision: 2006 December 2006 FX35/FX45
Seat Belt Buckle Switch (Driver Side) Signal InspectionNKS003I9
1. CHECK UNIFIED METER AND A/C AMP. INPUT SIGNAL
1. Select “METER A/C AMP” on CONSULT-II.
2. With “DATA MONITOR” of “METER A/C AMP”, confirm “SEAT BELT W/L” when the seat belt is operated.
OK or NG
OK >> INSPECTION END
NG >> GO TO 2.
2. CHECK COMBINATION METER INPUT SIGNAL
1. Turn ignition switch ON.
2. Check voltage between combination meter harness connector M20 terminal 9 and ground.
OK or NG
OK >> Replace combination meter.
NG >> GO TO 3.
3. CHECK SEAT BELT BUCKLE SWITCH (DRIVER SIDE) CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect combination meter connector and seat belt buckle switch (driver side) connector.
3. Check continuity between combination meter harness connector M20 terminal 9 and seat belt buckle switch (driver side) harness
connector B160 terminal 60.
4. Check harness continuity between combination meter harness connector M20 terminal 9 and ground.
OK or NG
OK >> GO TO 4.
NG >> Repair harness or connector.
4. CHECK SEAT BELT BUCKLE SWITCH (DRIVER SIDE)
Check seat belt buckle switch (driver side). Refer to DI-79, "
SEAT BELT BUCKLE SWITCH (DRIVER SIDE)" .
OK or NG
OK >> Check seat belt buckle switch (driver side) ground circuit.
NG >> Replace seat belt buckle switch (driver side). “SEAT BELT W/L”
When seat belt (driver side)
is fastened : OFF
When seat belt (driver side)
is unfastened : ON
SKIA6728E
9 – Ground
When seat belt (driver side)
is fastened : Approx. 12 V
When seat belt (driver side)
is unfastened : Approx. 0 V
SKIA5052E
9 – 60 : Continuity should exist.
9 – Ground : Continuity should not exist.
PKIB3579E

WARNING CHIME DI-79
C
D E
F
G H
I
J
L
M A
B
DI
Revision: 2006 December 2006 FX35/FX45
Component InspectionNKS003IA
FRONT DOOR SWITCH (DRIVER SIDE)
Check continuity between terminal 1 and door switch case ground.
KEY SWITCH
Check continuity between terminals 1 and 2.
KEY SWITCH AND IGNITION KNOB SWITCH
Check continuity between terminals 3 and 4.
SEAT BELT BUCKLE SWITCH (DRIVER SIDE)
Check continuity between terminals 60 and 61A. 1 – Front door switch (Driver side) case ground
When front door switch
(driver side) is released : Continuity should exist.
When front door switch
(driver side) is pushed : Continuity should not exist.
PKIA3718E
1 – 2
When key is inserted to igni-
tion key cylinder : Continuity should
exist.
When key is removed from
ignition key cylinder : Continuity should not
exist.
SKIA5049E
3 – 4
When key is inserted to igni-
tion key cylinder : Continuity should
exist.
When key is removed from
ignition key cylinder : Continuity should not
exist.
SKIA5060E
60 – 61A
When seat belt (driver side)
is fastened : Continuity should not
exist.
When seat belt (driver side)
is unfastened : Continuity should
exist.
SKIA5053E

EC-1
ENGINE CONTROL SYSTEM
B ENGINE
CONTENTS
C
D E
F
G H
I
J
K L
M
SECTION EC
A
EC
Revision: 2006 December 2006 FX35/FX45
ENGINE CONTROL SYSTEM
VQ35DE
INDEX FOR DTC ................................................... ... 15
DTC No. Index .................................................... ... 15
Alphabetical Index ............................................... ... 19
PRECAUTIONS ..................................................... ... 23
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” ............................................................. ... 23
On Board Diagnostic (OBD) System of Engine and
A/T ....................................................................... ... 23
Precaution ........................................................... ... 23
PREPARATION ...................................................... ... 27
Special Service Tools .......................................... ... 27
Commercial Service Tools ................................... ... 29
ENGINE CONTROL SYSTEM ............................... ... 30
System Diagram .................................................. ... 30
Multiport Fuel Injection (MFI) System ................. ... 31
Electronic Ignition (EI) System ............................ ... 33
Fuel Cut Control (at No Load and High Engine
Speed) ................................................................. ... 34
AIR CONDITIONING CUT CONTROL .................. ... 35
Input/Output Signal Chart .................................... ... 35
System Description ............................................. ... 35
AUTOMATIC SPEED CONTROL DEVICE (ASCD) ... 36
System Description ............................................. ... 36
Component Description ....................................... ... 37
CAN COMMUNICATION ....................................... ... 38
System Description ............................................. ... 38
EVAPORATIVE EMISSION SYSTEM .................... ... 39
Description .......................................................... ... 39
Component Inspection ........................................ ... 42
Removal and Installation ..................................... ... 43
How to Detect Fuel Vapor Leakage .................... ... 43
ON BOARD REFUELING VAPOR RECOVERY
(ORVR) ................................................................... ... 46
System Description ............................................. ... 46
Diagnostic Procedure .......................................... ... 47
Component Inspection ........................................ ... 49 POSITIVE CRANKCASE VENTILATION ..............
... 51
Description ........................................................... ... 51
Component Inspection ......................................... ... 51
IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-
NATS) ..................................................................... ... 53
Description ........................................................... ... 53
ON BOARD DIAGNOSTIC (OBD) SYSTEM ......... ... 54
Introduction .......................................................... ... 54
Two Trip Detection Logic ..................................... ... 54
Emission-Related Diagnostic Information ............ ... 55
Malfunction Indicator Lamp (MIL) ........................ ... 68
OBD System Operation Chart ............................. ... 72
BASIC SERVICE PROCEDURE ............................ ... 77
Basic Inspection .................................................. ... 77
Idle Speed and Ignition Timing Check ................. ... 82
VIN Registration .................................................. ... 83
Accelerator Pedal Released Position Learning ... ... 84
Throttle Valve Closed Position Learning .............. ... 84
Idle Air Volume Learning ..................................... ... 84
Fuel Pressure Check ........................................... ... 86
TROUBLE DIAGNOSIS ......................................... ... 88
Trouble Diagnosis Introduction ............................ ... 88
DTC Inspection Priority Chart .............................. ... 94
Fail-Safe Chart .................................................... ... 96
Symptom Matrix Chart ......................................... ... 97
Engine Control Component Parts Location ......... .101
Vacuum Hose Drawing ........................................ .107
Circuit Diagram .................................................... .108
ECM Harness Connector Terminal Layout .......... .110
ECM Terminals and Reference Value .................. .110
CONSULT-II Function (ENGINE) ......................... .119
Generic Scan Tool (GST) Function ...................... .130
CONSULT-II Reference Value in Data Monitor .... .133
Major Sensor Reference Graph in Data Monitor
Mode .................................................................... .136
TROUBLE DIAGNOSIS - SPECIFICATION VALUE .138
Description ........................................................... .138
Testing Condition ................................................. .138
Inspection Procedure ........................................... .138
Diagnostic Procedure .......................................... .139

EC-7
C
D E
F
G H
I
J
K L
M
EC A
Revision: 2006 December 2006 FX35/FX45 CONSULT-II Reference Value in Data Monitor Mode
. 589
On Board Diagnosis Logic .................................. . 589
DTC Confirmation Procedure .............................. . 590
Wiring Diagram ................................................... . 591
Diagnostic Procedure .......................................... . 592
Component Inspection ........................................ . 595
Removal and Installation ..................................... . 595
DTC P2138 APP SENSOR .................................... . 596
Component Description ....................................... . 596
CONSULT-II Reference Value in Data Monitor Mode . 596
On Board Diagnosis Logic .................................. . 596
DTC Confirmation Procedure .............................. . 597
Wiring Diagram ................................................... . 598
Diagnostic Procedure .......................................... . 599
Component Inspection ........................................ . 603
Removal and Installation ..................................... . 603
DTC P2A00, P2A03 A/F SENSOR 1 ..................... . 604
Component Description ....................................... . 604
CONSULT-II Reference Value in Data Monitor Mode . 604
On Board Diagnosis Logic .................................. . 604
DTC Confirmation Procedure .............................. . 605
Wiring Diagram ................................................... . 606
Diagnostic Procedure .......................................... . 609
Removal and Installation ..................................... . 615
ASCD BRAKE SWITCH ........................................ . 616
Component Description ....................................... . 616
CONSULT-II Reference Value in Data Monitor Mode . 616
Wiring Diagram ................................................... . 617
Diagnostic Procedure .......................................... . 618
Component Inspection ........................................ . 622
ASCD INDICATOR ................................................ . 623
Component Description ....................................... . 623
CONSULT-II Reference Value in Data Monitor Mode . 623
Wiring Diagram ................................................... . 624
Diagnostic Procedure .......................................... . 625
ELECTRICAL LOAD SIGNAL ............................... . 626
Description .......................................................... . 626
CONSULT-II Reference Value in Data Monitor Mode . 626
Diagnostic Procedure .......................................... . 626
FUEL INJECTOR ................................................... . 628
Component Description ....................................... . 628
CONSULT-II Reference Value in Data Monitor Mode . 628
Wiring Diagram ................................................... . 629
Diagnostic Procedure .......................................... . 630
Component Inspection ........................................ . 634
Removal and Installation ..................................... . 634
FUEL PUMP .......................................................... . 635
Description .......................................................... . 635
CONSULT-II Reference Value in Data Monitor Mode . 635
Wiring Diagram ................................................... . 636 Diagnostic Procedure ..........................................
.637
Component Inspection ......................................... .640
Removal and Installation ..................................... .640
ICC BRAKE SWITCH ............................................ .641
Component Description ....................................... .641
CONSULT-II Reference Value in Data Monitor Mode .641
Wiring Diagram .................................................... .642
Diagnostic Procedure .......................................... .643
Component Inspection ......................................... .648
IGNITION SIGNAL ................................................. .649
Component Description ....................................... .649
Wiring Diagram .................................................... .650
Diagnostic Procedure .......................................... .655
Component Inspection ......................................... .660
Removal and Installation ..................................... .661
REFRIGERANT PRESSURE SENSOR ................. .662
Component Description ....................................... .662
Wiring Diagram .................................................... .663
Diagnostic Procedure .......................................... .664
Removal and Installation ..................................... .666
SNOW MODE SWITCH ......................................... .667
Description ........................................................... .667
CONSULT-II Reference Value in the Data Monitor
Mode .................................................................... .667
Wiring Diagram .................................................... .668
Diagnostic Procedure .......................................... .669
Component Inspection ......................................... .671
MIL AND DATA LINK CONNECTOR ..................... .672
Wiring Diagram .................................................... .672
SERVICE DATA AND SPECIFICATIONS (SDS) ... .674
Fuel Pressure ...................................................... .674
Idle Speed and Ignition Timing ............................ .674
Calculated Load Value ......................................... .674
Mass Air Flow Sensor .......................................... .674
Intake Air Temperature Sensor ............................ .674
Engine Coolant Temperature Sensor .................. .674
Air Fuel Ratio (A/F) Sensor 1 Heater ................... .674
Heated Oxygen sensor 2 Heater ......................... .674
Crankshaft Position Sensor (POS) ...................... .674
Camshaft Position Sensor (PHASE) ................... .674
Throttle Control Motor .......................................... .674
Fuel Injector ......................................................... .675
Fuel Pump ........................................................... .675
VK45DE
INDEX FOR DTC .................................................... .676
DTC No. Index ..................................................... .676
Alphabetical Index ............................................... .680
PRECAUTIONS ..................................................... .684
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” .............................................................. .684
Precautions for Procedures without Cowl Top Cover .684
On Board Diagnostic (OBD) System of Engine and
A/T ....................................................................... .684
Precaution ........................................................... .685

PRECAUTIONS EC-23
[VQ35DE]
C
D E
F
G H
I
J
K L
M A
EC
Revision: 2006 December 2006 FX35/FX45
PRECAUTIONSPFP:00001
Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT
BELT PRE-TENSIONER”
NBS003KW
The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain
types of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS
system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front
air bag, depending on the severity of a collision and whether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the SRS and SB section of this Service Man-
ual.
WARNING:

To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death
in the event of a collision which would result in air bag inflation, all maintenance must be per-
formed by an authorized NISSAN/INFINITI dealer.

Improper maintenance, including incorrect removal and installation of the SRS, can lead to per-
sonal injury caused by unintentional activation of the system. For removal of Spiral Cable and Air
Bag Module, see the SRS section.

Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or
harness connectors.
On Board Diagnostic (OBD) System of Engine and A/TNBS003KX
The ECM has an on board diagnostic system. It will light up the malfunction indicator lamp (MIL) to warn the
driver of a malfunction causing emission deterioration.
CAUTION:

Be sure to turn the ignition switch OFF and disconnect the negative battery cable before any
repair or inspection work. The open/short circuit of related switches, sensors, solenoid valves,
etc. will cause the MIL to light up.

Be sure to connect and lock the connectors securely after work. A loose (unlocked) connector will
cause the MIL to light up due to the open circuit. (Be sure the connector is free from water, grease,
dirt, bent terminals, etc.)

Certain systems and components, especially those related to OBD, may use a new style slide-
locking type harness connector. For description and how to disconnect, refer to PG-72, "
HAR-
NESS CONNECTOR" .

Be sure to route and secure the harnesses properly after work. The interference of the harness
with a bracket, etc. may cause the MIL to light up due to the short circuit.

Be sure to connect rubber tubes properly after work. A misconnected or disconnected rubber tube
may cause the MIL to light up due to the malfunction of the EVAP system or fuel injection system,
etc.

Be sure to erase the unnecessary malfunction information (repairs completed) from the ECM and
TCM (Transmission control module) before returning the vehicle to the customer.
PrecautionNBS003KY

Always use a 12 volt battery as power source.

Do not attempt to disconnect battery cables while engine is
running.

Before connecting or disconnecting the ECM harness con-
nector, turn ignition switch OFF and disconnect negative
battery cable. Failure to do so may damage the ECM
because battery voltage is applied to ECM even if ignition
switch is turned OFF.

Before removing parts, turn ignition switch OFF and then
disconnect negative battery cable.
SEF289H

EC-144
[VQ35DE]
TROUBLE DIAGNOSIS - SPECIFICATION VALUE
Revision: 2006 December 2006 FX35/FX45
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 EC-97, "
Symptom Matrix Chart" .
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