Infiniti QX4 (R50). Manual — part 559
Coil Spring and Shock Absorber
COMPONENTS
NBSU0027
SSU041
REAR SUSPENSION
Coil Spring and Shock Absorber
SU-18
SRA645A
REMOVAL AND INSTALLATION
NBSU0028
Refer to “Removal and Installation”, “REAR SUSPENSION”,
SU-17.
When installing coil spring, pay attention to its direction.
Be sure spring rubber seat is not twisted and has not slipped
off when installing coil spring.
INSPECTION
NBSU0029
I
Check coil spring for yield, deformation and cracks.
I
Check shock absorber for oil leakage, cracks and deformation.
I
Check all rubber parts for wear, cracks and deformation.
Replace if necessary.
Upper Link, Lower Link and Panhard Rod
INSPECTION
NBSU0030
Check for cracks, distortion and other damage. Replace if
necessary.
SRA898
BUSHING REPLACEMENT
NBSU0031
Check for cracks and other damage. Replace with suitable tool if
necessary.
I
Remove bushing with suitable tool.
SRA900
When installing bushing, apply a coat of 1% soapy water to
outer wall of bushing.
Always install new bushing.
Do not tap end face of bushing directly with a hammer.
GI
MA
EM
LC
EC
FE
AT
TF
PD
AX
BR
ST
RS
BT
HA
SC
EL
IDX
REAR SUSPENSION
Coil Spring and Shock Absorber (Cont’d)
SU-19
INSTALLATION
NBSU0032
When installing each link, pay attention to direction of nuts
and bolts.
When installing each rubber part, final tightening must be car-
ried out under unladen condition with tires on ground.
SRA766A
Stabilizer Bar
REMOVAL AND INSTALLATION
NBSU0033
I
When removing and installing stabilizer bar, fix portion A.
SFA449BA
I
Install stabilizer bar with ball joint socket properly placed.
Service Data and Specifications (SDS)
GENERAL SPECIFICATIONS (REAR)
NBSU0034
Suspension type
5-link type rigid with coil spring
Shock absorber type
Double-acting hydraulic
Stabilizer
Standard equipment
REAR SUSPENSION
Upper Link, Lower Link and Panhard Rod (Cont’d)
SU-20
TRANSFER
CONTENTS
PRECAUTIONS . . . . . . . . . . . . . . . ...3
Supplemental Restraint System (SRS)
. . . ...3
Precautions . . . . . . . . . . . . . . . . ..3
Service Notice. . . . . . . . . . . . . . . ..4
Wiring Diagrams and Trouble Diagnosis. . . . . .4
PREPARATION . . . . . . . . . . . . . . . ...5
Special Service Tools . . . . . . . . . . . . ..5
Commercial Service Tools . . . . . . . . . . ...9
ALL-MODE 4WD SYSTEM . . . . . . . . . . ...10
Cross-sectional View . . . . . . . . . . . . .10
Control System . . . . . . . . . . . . . . .. 11
ALL-MODE 4WD TRANSFER BASIC CONTROL
. . 12
. . . . . . . . . . . . . . . . 12
. . . . . . . . 13
INDICATIONS OF 4WD WARNING LAMP
Location of Electrical Parts. . . . . . . . . . 14
Description of Electrical Parts . . . . . . . . ...15
. . . . . . . . . . . . 15
. . . . . . . . . .15
. . . . . . . .16
. . . . . . . . . ...16
Circuit Diagram for Quick Pinpoint Check. . . . .17
Wiring Diagram - TF -. . . . . . . . . . . . 18
ON BOARD DIAGNOSTIC SYSTEM
DESCRIPTION . . . . . . . . . . . . . . . ...27
Trouble Diagnosis without CONSULT-II . . . . . 27
. . . . . . . . . . . . . . 27
. . . . . . . 28
INDICATIONS OF 4WD WARNING LAMP
Trouble Diagnosis with CONSULT-II . . . . . . .30
. . . . . . . . . . . . ...30
. . . . . . . . . ..31
. . . . . . . . . . . . . ..33
REFERENCE VALUE IN DATA MONITOR MODE
. ..36
. . . . . . . . . . . . . 38
CLUTCH FORCE RELEASE LIMIT ADJUSTMENT
. .39
TROUBLE DIAGNOSIS - INTRODUCTION. . . . ..41
Introduction . . . . . . . . . . . . . . . . 41
. . . . . . . . . . . . . . 41
. . . . . . . . . .41
Work Flow. . . . . . . . . . . . . . . . ..43
HOW TO PERFORM TROUBLE DIAGNOSES FOR
QUICK AND ACCURATE REPAIR
. . . . . . . .43
TROUBLE DIAGNOSIS - BASIC INSPECTION . . ...44
Listen to Customer Complaints . . . . . . . . .44
Transfer Fluid Check . . . . . . . . . . . . .44
Road Test. . . . . . . . . . . . . . . . ...44
. . . . . . . 44
1. CHECK BEFORE ENGINE IS STARTED
. . . ...45
. . . . . . . . . . . . ..47
. . . . . . . . . . . . . .51
TROUBLE DIAGNOSIS - GENERAL
DESCRIPTION . . . . . . . . . . . . . . . ...54
Transfer Control Unit Terminals and Reference
Value . . . . . . . . . . . . . . . . . . ..54
REMOVAL AND INSTALLATION OF TRANSFER
CONTROL UNIT
. . . . . . . . . . . . . ..54
INSPECTION OF TRANSFER CONTROL UNIT
. . ..54
TRANSFER CONTROL UNIT INSPECTION TABLE
. 55
VEHICLE SPEED SENSOR (FRONT
REVOLUTION SENSOR) . . . . . . . . . . . ..61
Diagnostic Procedure . . . . . . . . . . . . 61
4WD SOLENOID VALVE. . . . . . . . . . . ...64
Diagnostic Procedure . . . . . . . . . . . . 64
2-4WD SHIFT SOLENOID VALVE AND 4WD
SHIFT SWITCH. . . . . . . . . . . . . . . ..66
Diagnostic Procedure . . . . . . . . . . . . 66
TRANSFER MOTOR AND TRANSFER MOTOR
RELAY . . . . . . . . . . . . . . . . . . ...70
Diagnostic Procedure . . . . . . . . . . . . 70
TRANSFER FLUID TEMPERATURE SENSOR. . . 73
Diagnostic Procedure . . . . . . . . . . . . 73
ATP SWITCH, WAIT DETECTION SWITCH AND
NEUTRAL-4LO SWITCH. . . . . . . . . . . ...76
Diagnostic Procedure . . . . . . . . . . . . 76
CLUTCH PRESSURE SWITCH . . . . . . . . . 80
Diagnostic Procedure . . . . . . . . . . . . 80
GI
MA
EM
LC
EC
FE
AT
PD
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
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