ABS INFINITI QX4 2005 Factory Service Manual

FSU-10
COIL SPRING AND SHOCK ABSORBER
Revision: October 20052005 QX56
COIL SPRING AND SHOCK ABSORBERPFP:56210
Removal and InstallationEES001GK
REMOVAL
1. Remove the wheel and tire using power tool.
2. Remove the shock absorber lower bolt using power tool.
3. Remove the three shock absorber upper mounting nuts using
power tool.
4. Remove the coil spring and shock absorber assembly.

Turn steering knuckle out to gain enough clearance for
removal.
INSTALLATION
Installation is in the reverse order of removal.

The step in the shock absorber assembly lower seat faces outside of vehicle.

Tighten all nuts and bolts to specification. Refer to FSU-5, "Components" .

When installing wheel and tire, refer to WT-7, "Rotation" .
Disassembly and AssemblyEES001GL
DISASSEMBLY
1. Set the shock absorber in a vise, then loosen (without removing)
the piston rod lock nut as shown.
CAUTION:
Do not remove piston rod lock nut at this time.
2. Compress the spring using commercial service tool until the
shock absorber mounting insulator can be turned by hand.
WAR NIN G:
Make sure that the pawls of the two spring compressors are
firmly hooked on the spring. The spring compressors must
be tightened alternately and evenly so as not to tilt the
spring.
3. Remove the piston rod lock nut.

Discard the piston rod lock nut, use a new nut for assembly.
INSPECTION AFTER DISASSEMBLY
Shock Absorber Assembly

Check for smooth operation through a full stroke, both compression and extension.

Check for oil leakage on welded or gland packing portions.

Check piston rod for cracks, deformation or other damage and replace if necessary.
Mounting Insulator and Rubber Parts
Check cemented rubber-to-metal portion for separation or cracks. Check rubber parts for deterioration and
replace if necessary.
LEIA0093E
SSU0 02
SSU0 03

COIL SPRING AND SHOCK ABSORBER
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Coil Spring

Check for cracks, deformation or other damage and replace if necessary.

Check the free spring height.
ASSEMBLY
1. When installing coil spring on shock absorber, it must be posi-
tioned as shown.
2. Install upper mounting insulator as shown in line with lower
shock absorber mount and step in shock absorber lower seat.

The step in the shock absorber lower seat faces outside of
vehicle.
3. Tighten the piston rod lock nut to specification. Refer to FSU-5,
"Components" .

Use a new piston rod lock nut for assembly.Front spring free height
4x2 : 325.5 ± 3 mm (12.8 ± 0.1 in)
4x4 : 335.0 ± 3 mm (13.2 ± 0.1 in)
SFA508A
WEIA0093E

FSU-14
LOWER LINK
Revision: October 20052005 QX56
LOWER LINKPFP:55020
Removal and InstallationEES001GO
REMOVAL
1. Remove the wheel and tire using power tool.
2. Remove lower shock absorber bolt.
3. Remove stabilizer bar connecting rod lower nut using power tool, then separate connecting rod from lower
link. Refer to FSU-12, "
Removal and Installation" .
4. Remove drive shaft, if equipped. Refer to FAX-7, "
Removal and Installation" .
5. Remove pinch bolt from steering knuckle using power tool, then
separate lower link ball joint from steering knuckle.
6. Remove lower link adjusting bolts and nuts, then the lower link.
NOTE:
Some vehicles may be equipped with straight (non-adjustable)
lower link bolts and washers. In order to adjust camber and
caster on these vehicles, first replace the lower link bolts and
washers with adjustable (cam) bolts and washers.
INSPECTION AFTER REMOVAL
Lower Link
Check for deformation and cracks. Replace if necessary.
Lower Link Bushing
Check for distortion and damage. Replace if necessary.
INSTALLATION
Installation is in the reverse order of removal.

Tighten all nuts and bolts to specification. Refer to FSU-5, "Components" .

When installing wheel and tire, refer to WT-7, "Rotation" .

After installation, check that the front wheel alignment is within specification. Refer to FSU-6, "Front
Wheel Alignment" .
LEIA0097E
WEIA0079E

KNUCKLE
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KNUCKLEPFP:40014
On-Vehicle Inspection and ServiceEES001GR
Make sure the mounting conditions (looseness, backlash) of each component and component status (wear,
damage) are within specifications. Refer to FSU-21, "
Ball Joint" .
Removal and InstallationEES001GS
REMOVAL
1. Remove wheel and tire from vehicle using power tool.
2. Without disconnecting the hydraulic lines, remove brake caliper using power tool. Reposition it aside with
wire. Refer to BR-21, "
Removal and Installation of Brake Caliper Assembly and Disc Rotor" .
CAUTION:
It is not necessary to remove bolts on torque member and brake hose except for disassembly or
replacement of caliper assembly. In this case, hang cylinder body with a wire so that the brake
hose in not under tension.
NOTE:
Avoid depressing brake pedal while brake caliper is removed.
3. Put alignment marks on disc rotor and wheel hub and bearing
assembly, then remove disc rotor.
4. Remove ABS sensor from steering knuckle. Refer to BRC-64, "
Removal and Installation" .
CAUTION:
Do not pull on ABS sensor harness.
5. Remove cotter pin, then remove lock nut from drive shaft using power tool.
6. Remove steering outer socket cotter pin at steering knuckle, then loosen mounting nut using power tool.
1. Disc rotor 2. Wheel hub and bearing assembly 3. Wheel stud
4. Splash guard 5. Steering knuckle
WDIA0043E
WDIA0044E

FSU-20
SERVICE DATA AND SPECIFICATIONS (SDS)
Revision: October 20052005 QX56
SERVICE DATA AND SPECIFICATIONS (SDS)PFP:00030
General Specifications (Front)EES001GT
Wheel Alignment (Unladen*1 )*6EES001GU
*1: Fuel, radiator coolant and engine oil full. Spare tire, jack, hand tools and mats in designated positions.
*2: Target value 37° 31′ (37.52°)
*3: Target value 33° 59′ (33.98°)
*4: Target value 37° 44′ (37.73°)
*5: Target value 33° 29′ (33.48°)
*6: Some vehicles may be equipped with straight (non-adjustable) lower link bolts and washers. In order to adjust camber and caster on
these vehicles, first replace the lower link bolts and washers with adjustable (cam) bolts and washers.Suspension type Independent double wishbone coil over shock
Shock absorber type Double-acting hydraulic
StabilizerStandard equipment
Drive type4x2 4x4
Camber
Degree minute (decimal degree)Minimum -0° 51′ (-0.85°)-0° 33′ (-0.55°)
Nominal -0° 6′ (-0.10°)0° 12′ (0.20°)
Maximum 0° 39′ (0.65°)0° 57′ (0.95°)
Cross camber 0° 45′ (0.75°) or less 0° 45′ (0.75°) or less
Caster
Degree minute (decimal degree)Minimum 3° 15′ (3.25°)2° 45′ (2.75°)
Nominal 4° 0′ (4.00°)3° 30′ (3.50°)
Maximum 4° 45′ (4.75°)4° 15′ (4.25°)
Cross caster 0° 45′ (0.75°) or less 0° 45′ (0.75°) or less
Kingpin inclination
Degree minute (decimal degree)13° 32′ (13.53°)13°13′ (13.22°)
Total toe-inDistance (A − B)Minimum 1.8 mm (0.07 in) 1.8 mm (0.07 in)
Nominal 2.8 mm (0.11 in) 2.8 mm (0.11 in)
Maximum 3.8 mm (0.15 in) 3.8 mm (0.15 in)
Angle (left side and right side)
Degree minute (decimal degree)Minimum 0° 3′ (0.05°)0° 3′ (0.05°)
Nominal 0° 5′ (0.08°)0° 5′ (0.08°)
Maximum 0° 7′ (0.12°)0° 7′ (0.12°)
Wheel turning angle
(full turn)Inside
Degree minute (decimal degree)34° 31′ – 38° 31′ *2
(34.52° – 38.52°)34° 44′ – 38° 44′ *4
(34.73° – 38.73°)
Outside
Degree minute (decimal degree)30° 59′ – 34° 59′ *3
(30.98° – 34.98°)30° 29′ – 34° 29′ *5
(30.48° – 34.48°)
SFA234AC

CONSULT-II CHECKING SYSTEM
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Revision: October 20052005 QX56
CONSULT-II CHECKING SYSTEMPFP:00000
DescriptionEAS001XR

CONSULT-II is a hand-held type tester. When it is connected with a diagnostic connector equipped on the
vehicle side, it will communicate with the control unit equipped in the vehicle and then enable various
kinds of diagnostic tests.

Refer to “CONSULT Operator's Manual” for more information.
Function and System ApplicationEAS001XS
x: Applicable.
*1: IVIS (NATS) [Infiniti Vehicle Immobilizer System (Nissan Anti-Theft System)].
*2: This system is shown with IVIS (NATS) using program card AEN04A-1 or later.Diagnostic test
modeFunction
ENGINE
A/T
ICC
ABS
AIR BAG
IPDM E/R
BCM
AUTO DRIVE POS.
REARVIEW CAMERA
AIR LEVELIZER
ALL MODE AWD/4WD
HVAC
NVIS (NATS)
*1
NVIS (NATS BCM OR S/ENT)
*1
Work supportThis mode enables a technician to adjust some devices
faster and more accurately by following the indications on
CONSULT-II.x - xx - - xxxxx - - -
Self-diagnosticSelf-diagnostic can be performed quickly. ----x---------
Self-diagnos-
tic resultsSelf-diagnostic results can be read and erased quickly. xxxx - xxx - xxxxx
Trouble diag-
nostic recordCurrent self-diagnostic results and all trouble diagnostic
records previously stored can be read.--- - x---------
Data monitor Input/Output data in the ECM can be read. xxxx - x - xxxxx - -
Data monitor
(spec)Data monitor specification can be read. x-------------
CAN diagno-
sis support
monitorThe communication condition of CAN communication line
can be read.xxxx - xxx - - xx - -
Active testDiagnostic Test Mode in which CONSULT-II drives some
actuators apart from the ECMs and also shifts some
parameters in a specified range.x-xx-x-x-x----
Function testThis mode can show results of self-diagnosis of ECU with
either “OK” or “NG”. For engines, more practical tests
regarding sensors/switches and/or actuators are avail-
able.xx-xx- --- -----
DTC & SRT
confirmationThe results of SRT (System Readiness Test) and the self-
diagnosis status/result can be confirmed.x-------------
DTC work sup-
portThe operating condition to confirm Diagnosis Trouble
Codes can be selected.xx------------
ECM/ECU part
numberECM/ECU part number can be read. x x x x - - x x x x x x - -
ECU discrimi-
nated No.Classification number of a replacement ECU can be read
to prevent an incorrect ECU from being installed.----x---------
Configuration Sets control module parameters to match vehicle options.------x-------
PIN read
*2This mode shows the BCM-specific 5-digit code. -------------x
Control unit
initialization
*2All registered ignition key IDs in NATS components can
be initialized and new IDs can be registered.------------x-

IDENTIFICATION INFORMATION
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Identification NumberEAS001G3
VEHICLE IDENTIFICATION NUMBER ARRANGEMENT
1. Emission control information label 2. Tire placard 3. F.M.V.S.S. certification label
4. Vehicle identification number plate 5. Vacuum hose diagram
WAIA0053E
Position Character Qualifier Definition
1
5N3 Manufacturer 5N3: USA produced multi-purpose vehicle 2
3
4 A Engine type A: VK56DE
5 A Vehicle line A: Infiniti QX56
6 0 Model change (0-9)
7 8 Body type 8: 4 door wagon
8AGross vehicle
weight ratingA: 2WD, 4-wheel ABS, Class E
B: 4WD, 4-wheel ABS, Class E
9 * Check digit(0 to 9 or X) The code for the check digit is determined by a mathematical
computation.
10 5 Model year 2005
11 NManufacturing
plantN: Canton Mississippi
12
XXXXXVehicle serial num-
berChassis number 13
14
15
16
17

TERMINOLOGY
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Revision: October 20052005 QX56
Exhaust gas recirculation control-BPT
valveEGRC-BPT valve BPT valve
Exhaust gas recirculation control-solenoid
valveEGRC-solenoid valve EGR control solenoid valve
Exhaust gas recirculation temperature sen-
sor
EGRT sensor Exhaust gas temperature sensor
EGR temperature sensor
Flash electrically erasable programmable
read only memoryFEEPROM ***
Flash erasable programmable read only
memoryFEPROM ***
Flexible fuel sensor FFS ***
Flexible fuel system FF system ***
Fuel pressure regulator *** Pressure regulator
Fuel pressure regulator control solenoid
valve*** PRVR control solenoid valve
Fuel trim FT ***
Heated Oxygen sensor HO2S Exhaust gas sensor
Idle air control system IAC system Idle speed control
Idle air control valve-air regulator IACV-air regulator Air regulator
Idle air control valve-auxiliary air control
valveIACV-AAC valve Auxiliary air control (AAC) valve
Idle air control valve-FICD solenoid valve IACV-FICD solenoid valve FICD solenoid valve
Idle air control valve-idle up control sole-
noid valveIACV-idle up control solenoid valve Idle up control solenoid valve
Idle speed control-FI pot ISC-FI pot FI pot
Idle speed control system ISC system ***
Ignition control IC ***
Ignition control module ICM ***
Indirect fuel injection system IFI system ***
Intake air IA Air
Intake air temperature sensor IAT sensor Air temperature sensor
Knock *** Detonation
Knock sensor KS Detonation sensor
Malfunction indicator lamp MIL Check engine light
Manifold absolute pressure MAP ***
Manifold absolute pressure sensor MAPS ***
Manifold differential pressure MDP ***
Manifold differential pressure sensor MDPS ***
Manifold surface temperature MST ***
Manifold surface temperature sensor MSTS ***
Manifold vacuum zone MVZ ***
Manifold vacuum zone sensor MVZS ***
Mass air flow sensor MAFS Air flow meter
Mixture control solenoid valve MC solenoid valve Air-fuel ratio control solenoid valve
Multiport fuel injection System MFI system Fuel injection controlNEW TERMNEW ACRONYM /
ABBREVIATIONOLD TERM

IDX-2
ALPHABETICAL INDEX
Numerics
2-4WD shift solenoid valve ..... TF-94
, TF-152, TF-165
4WD - Wiring diagram ....................................... TF-24
4WD shift switch ................................................ TF-66
4WD solenoid valve ................ TF-90, TF-152, TF-165
4WD system description .................................... TF-15
4WD system diagram ........................................ TF-19
A
A/C air flow ...................................................... ATC-29
A/C compressor clutch removal and installation .. ATC-
180
A/C compressor mounting ............................. ATC-179
A/C compressor precaution ............................. ATC-11
A/C compressor special service tool ................ ATC-14
A/C control operation (auto A/C) ...................... ATC-26
A/C diagnostic work flow (auto A/C) .............. ATC-132
A/C evaporator ............................................... ATC-186
A/C HFC134a (R134a) system identification ..... ATC-7
A/C HFC134a (R134a) system precaution ........ ATC-5
A/C HFC134a (R134a) system service procedure ATC-
175
A/C HFC134a (R134a) system service tools ... ATC-14
A/C HFC134a system service equipment precaution ...
ATC-11
A/C lubricant (R134a) ...................................... ATC-22
A/C lubrication oil ............................................. ATC-22
A/C operational check ....................... ATC-57, ATC-60
A/C self-diagnoses (auto A/C) ........ ATC-55, ATC-132
A/C service data specification ........................ ATC-193
A/C trouble diagnoses (auto A/C) .................... ATC-33
A/C, A - Wiring diagram ................................... ATC-43
A/T fluid checking ...................... AT-13, AT-50, MA-22
A/T fluid cooler cleaning .................................... AT-13
A/T fluid replacement ............................. AT-13, MA-24
A/T fluid temperature sensor ........................... AT-126
A/T IND - Wiring diagram .................................... DI-40
A/T indicator ........................................................ DI-40
A/T shift lock system ........................................ AT-222
A/T trouble diagnoses ........................................ AT-41
A/T Wiring diagram AT - CAN ............................ AT-96
A/T Wiring diagram AT - FTS .......................... AT-127
A/T Wiring diagram AT - MAIN ........................ AT-168
A/T Wiring diagram AT - NONDTC .................. AT-177
A/T Wiring diagram AT - PNP/SW ................... AT-105
A/T Wiring diagram AT - STSIG ...................... AT-100
A/T Wiring diagram AT - VSS A/T ................... AT-110
ABS - Wiring diagram ..................................... BRC-16
ABS (anti-lock brake system) ........................... BRC-7
Accelerator control system ............................... ACC-2
Accelerator pedal position (APP) sensor . EC-591, EC-
597, EC-611
Accelerator pedal released position learning ..... EC-90
AF1B1-Wiring diagram EC-461, EC-470, EC-479, EC-
489, EC-500, EC-510, EC-522
AF1B2-Wiring diagram EC-463, EC-472, EC-481, EC-
491, EC-502, EC-512, EC-524
AF1HB1-Wiring diagram ................................. EC-387
AF1HB2-Wiring diagram ................................. EC-389
Aiming adjustment .................................. LT-30, LT-78
Air bag ............................................................... SRS-3
Air cleaner and air duct ..................................... EM-14
Air cleaner filter replacement ............................ MA-16
Air conditioner cut control ................................. EC-28
Air flow meter - See Mass air flow sensor EC-174, EC-
183
Air fuel ratio sensor 1 .. EC-459, EC-468, EC-477, EC-
487, EC-497, EC-507, EC-519
Air fuel ratio sensor 1 heater ........................... EC-386
Air mix. door motor .......................................... ATC-70
Ambient sensor ............................. ATC-137, ATC-148
Angular tightening application ............................. EM-3
APPS1 - Wiring diagram ................................. EC-593
APPS2 - Wiring diagram ................................. EC-599
APPS3 - Wiring diagram ................................. EC-613
ASC/BS - Wiring diagram ............................... EC-571
ASC/SW - Wiring diagram .............................. EC-554
ASCBOF - Wiring diagram .............................. EC-658
ASCD ................................................................ EC-29
ASCD (automatic speed control device) ........... ACS-3
ASCD brake switch ........................... EC-569, EC-657
ASCD indicator lamp ....................................... EC-664
ASCD steering switch ..................................... EC-552
ASCIND - Wiring diagram ............................... EC-665
ATP switch ............................ TF-107, TF-110, TF-115
AUDIO - Wiring diagram .................................... AV-10
AUT/DP - Wiring diagram .................................. SE-20
Auto air conditioner - Wiring diagram .............. ATC-43
Auto anti-dazzling inside mirror ........... GW-75, GW-76
Autolamp ............................................................ LT-47
Automatic amplifier ......................................... ATC-61
Automatic drive positioner .................................. SE-11
Automatic transmission number .......................... GI-48
AV and NAVI control unit ................................... AV-63
AV communication line ...................................... AV-87
B
Back door ........................................................... BL-99
Back door trim ..................................................... EI-32
Back sonar .......................................................... DI-58
BACK/L - Wiring diagram ................................. LT-106
Back-up lamp ................................................... LT-106
Ball joint (front) ................................................ FSU-15
Basic inspection ................................................ EC-72
Battery ................................................................. SC-4
Battery/Starting/Charging System Tester SC-6, SC-12,
SC-19
BCM (Body control module) .............................. BCS-3
Block heater ...................................................... EM-73
Blower motor ................................... ATC-93, ATC-152
Body alignment ................................................ BL-172
Body component parts ..................................... BL-161
Body construction ............................................ BL-171
Body exterior paint color .................................. BL-160
Body mounting ................................................. BL-159

IDX-7
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IDX
ALPHABETICAL INDEX
Rear bumper ....................................................... EI-15
Rear case (Transfer) .......................... TF-146, TF-179
Rear combination lamp removal and installation ... LT-
122
Rear cover packing replacement diff. .............. RFD-24
Rear door ........................................... BL-128, GW-71
Rear seat ......................................................... SE-104
Rear seat belt ...................................................... SB-6
Rear suspension ............................................. RSU-25
Rear view monitor ............................................... DI-71
Rear washer .................................................... WW-35
Rear window defogger ..................................... GW-77
Rear wiper ....................................................... WW-35
Refrigerant connection precaution .................... ATC-7
Refrigerant discharging evacuating charging ATC-175
Refrigerant general precaution .......................... ATC-6
Refrigerant lines ........... ATC-175, ATC-183, ATC-184
Refrigerant pressure sensor ............ EC-643, ATC-185
Relay box .......................................................... PG-78
Remote keyless entry system ............................ BL-44
Removal and installation (A/T) ........... AT-244, AT-247
Removal and installation (Transfer) ................. TF-143
Revolution sensor (A/T) ................................... AT-108
Ring gear diff. inspection ................................. RFD-13
Road wheel size ................................................. GI-49
Rocker cover ..................................................... EM-33
Room lamp ....................................................... LT-129
Room lamp - See Interior lamp ........................ LT-129
ROOM/L - Wiring diagram ................................ LT-135
RP/SEN - Wiring diagram ............................... EC-644
S
SAE J1979 - Service $01 - 09 ........................... EC-48
Seat belt inspection ............................... SB-10, MA-32
Seat belt pre-tensioner .................................... SRS-58
Seat belt, front ..................................................... SB-3
Seat belt, rear ...................................................... SB-6
Seat, front .......................................................... SE-97
Seat, rear ........................................................ SE-104
Self-diagnosis (Transfer) .................................... TF-50
SEN/PW - Wiring diagram ............................... EC-455
SHIFT - Wiring diagram ................................... AT-223
Shift control (Transfer) ....................... TF-147, TF-174
Shift lock system .............................................. AT-222
Shock absorber (front) .................................... FSU-10
Shock absorber (rear) ..................................... RSU-34
Side air bag (satellite) sensor .......................... SRS-57
Side bearing preload diff. ................................ RFD-19
Side curtain air bag ......................................... SRS-54
Side trim .............................................................. EI-35
SMJ (super multiple junction) ............................ PG-74
SONAR - Wiring diagram .................................... DI-61
Spare tire size .................................................... GI-49
Spark plug ......................................................... EM-27
Spark plug replacement .................................... MA-18
Specification value .......................................... EC-146
Speedometer ......................................................... DI-5
Spiral cable ..................................................... SRS-48
SROOF - Wiring diagram .................................. RF-13
SRS - See Supplemental Restraint System ...... SRS-5
SRS - Wiring diagram ...................................... SRS-12
SRS Trouble diagnoses ..................................... SRS-8
Stabilizer bar (front) ......................................... FSU-12
Stabilizer bar (rear) ......................................... RSU-41
Stall test (A/T) .................................................... AT-50
Standardized relay ............................................. PG-72
START - Wiring diagram ................................... SC-11
Starting system .................................................. SC-10
Steering gear, linkage and transfer gear inspection .....
MA-29
Steering linkage ................................................. PS-15
Steering wheel and column ................................. PS-7
Step lamp ......................................................... LT-130
Stop lamp ......................................................... LT-103
Stop lamp switch ................. EC-569, EC-586, EC-657
STOP/L - Wiring diagram ................................. LT-104
Strut (front) ...................................................... FSU-10
Sub-oil pump (Transfer) ...................... TF-152, TF-165
Sun gear (Transfer) ............................ TF-147, TF-174
Sun roof, electric ................................................ RF-10
Sunload sensor .............................................. ATC-143
Sunroof .............................................................. RF-23
Supplemental Restraint System ........................ SRS-5
Supplemental restraint system - Wiring diagram . SRS-
12
Symbols and abbreviations ..................... GI-10, GI-22
Symptom matrix chart ...................................... EC-104
System readiness test (SRT) code .................... EC-54
T
Tachometer .......................................................... DI-5
Tail lamp ........................................................... LT-108
TAIL/L - Wiring diagram .................................... LT-110
TCM circuit diagram .......................................... AT-49
TCM inspection table ......................................... AT-82
TCS - Wiring diagram ..................................... BRC-16
TCS (traction control system) ........................... BRC-7
TCS component parts and connector location BRC-14
TCS wheel sensors ........................................ BRC-14
Theft warning system - See Vehicle security (Theft warn-
ing) system ......................................................... BL-75
Thermometer ...................................................... DI-26
Three way catalyst ............................................. EM-19
Three way catalyst function (Bank 1) .............. EC-298
Three way catalyst function (Bank 2) .............. EC-298
Three way catalyst precautions ............................ GI-5
Throttle control motor ...................................... EC-410
Throttle control motor relay .............................. EC-405
Throttle position sensor (TPS) ... EC-201, EC-264, EC-
450, EC-452, EC-604
Throttle valve closed position learning .............. EC-90
Tie-rod ............................................................... PS-15
Timing chain ...................................................... EM-35
Tire rotation ....................................................... MA-28
Tire size .............................................................. GI-49
Tooth contact diff. ............................................ RFD-20