Infiniti M35/M45 Y50. Manual — part 1123
TROUBLE DIAGNOSIS
STC-49
[RAS]
C
D
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F
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A
B
STC
Check RAS Static/Dynamic Characteristics
NGS000F3
1.
CHECK (1): RAS ACTUATOR STROKE
Perform CONSULT-II “ACTIVE TEST”, and then check the actuator
stroke when turning the steering wheel clockwise or counterclock-
wise by 180
°
or more.
OK or NG
OK
>> GO TO 2.
NG
>> GO TO 3.
2.
CHECK (2): RAS ACTUATOR STROKE
Perform CONSULT-II “ACTIVE TEST“. When turning the steering
wheel in neutral position (A), the rear wheel turns clockwise/counter-
clockwise periodically. At that time, check actuator stroke (B).
OK or NG
OK
>> RAS static/dynamic characteristics inspection is com-
pleted.
NG
>> GO TO 3.
3.
CHECK RAS MOTOR
Check RAS motor itself separated from other parts. Refer to
OK or NG
OK
>> GO TO 4.
NG
>> RAS motor malfunction. Check the stroke again after replacing.
4.
CHECK REAR WHEEL STEERING ANGLE SENSOR
Check rear wheel steering angle sensor separated from other parts. Refer to
OK or NG
OK
>> GO TO 5.
NG
>> Rear wheel steering angle sensor malfunction. Check the stroke again after replacing.
5.
CHECK RAS CONTROL UNIT
Replace RAS control unit. Check the symptom of malfunction again.
Is the malfunction corrected?
YES
>> RAS control unit malfunction
NO
>> GO TO 6.
6.
REPLACE RAS ACTUATOR ASSEMBLY
Replace RAS actuator assembly. Check the symptom of malfunction again.
Is the malfunction corrected?
YES
>> RAS actuator malfunction
NO
>> Check rear suspension components. Refer to
.
Neutral position (A)
Actuator stroke (B)
: 2.8 - 3.0 mm (0.110 - 0.118 in)
SGIA1240E
Actuator stroke (B)
: 2.3 - 2.5 mm (0.091 - 0.098 in)
SGIA1240E
STC-50
[RAS]
TROUBLE DIAGNOSIS
Component Inspection
NGS000F4
RAS MOTOR RELAY
1.
Check the resistance between RAS motor relay connector
B480.
2.
When applying or not supplying approximately 12 V between
RAS motor relay connector, check continuity RAS motor relay
connector B480.
RAS MOTOR
1.
Check the resistance RAS motor connector B463.
2.
Remove RAS motor from RAS actuator, and then turn the motor
by 6 V battery.
CAUTION:
Do not apply 12 V (battery voltage) to the RAS motor termi-
nal because RAS motor might be damaged.
REAR WHEEL STEERING ANGLE SENSOR
1.
Disconnect rear wheel steering angle sensor harness connector B465.
2.
Check resistance of rear wheel steering angle sensor connec-
tors B465.
Terminal 1 – 2
: Approx. 74
Ω
SGIA1266E
Terminal 3 – 5
: When applying 12 V voltage: Continu-
ity exist.
: When not applying 12 V voltage: Con-
tinuity not exist.
SGIA1286E
Terminal 1 – 2
: Approx. 0.6
Ω
If it is normal, it turns.
SGIA1287E
Terminal 2 – 3
: Approx. 1 k
Ω
Terminal 4 – 3
Terminal 1 – 3
: Approx. 1.25 k
Ω
SGIA1288E
TF-1
TRANSFER
D DRIVELINE/AXLE
CONTENTS
C
E
F
G
H
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J
K
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M
SECTION
TF
A
B
TF
TRANSFER
PRECAUTIONS . . . . . . . . . . . . . . .. 3
PREPARATION . . . . . . . . . . . . . . ... 5
Special Service Tools . . . . . . . . . . . ... 5
Commercial Service Tools . . . . . . . . . . 7
NOISE, VIBRATION AND HARSHNESS (NVH)
TROUBLESHOOTING . . . . . . . . . . . . 8
NVH Troubleshooting Chart . . . . . . . . . . 8
TRANSFER FLUID . . . . . . . . . . . . . . 9
Replacement . . . . . . . . . . . . . . . 9
DRAINING . . . . . . . . . . . . . . . . 9
FILLING . . . . . . . . . . . . . . . . . 9
Inspection . . . . . . . . . . . . . . . . . 9
FLUID LEAKAGE AND FLUID LEVEL . . . . .. 9
AWD SYSTEM . . . . . . . . . . . . . . .. 10
Power Transfer Diagram . . . . . . . . . . 10
System Description . . . . . . . . . . . . 10
System Diagram . . . . . . . . . . . . . . 12
COMPONENTS FUNCTION DESCRIPTION . . 13
CAN Communication . . . . . . . . . . . .. 13
SYSTEM DESCRIPTION . . . . . . . . . 13
TROUBLE DIAGNOSIS . . . . . . . . . . . 14
Fail-Safe Function . . . . . . . . . . . . .. 14
How to Perform Trouble Diagnosis . . . . . . 14
BASIC CONCEPT . . . . . . . . . . . ... 14
AWD CONTROL UNIT INSPECTION TABLE . . 20
CONSULT-II Function (ALL MODE AWD/4WD) . . 21
TROUBLE DIAGNOSIS FOR SYSTEM . . . . . 26
Power Supply Circuit for AWD Control Unit . . . 26
AWD Control Unit . . . . . . . . . . . . ... 27
DIAGNOSTIC PROCEDURE . . . . . . . .. 27
ABS System . . . . . . . . . . . . . . ... 27
DIAGNOSTIC PROCEDURE . . . . . . . .. 27
AWD Solenoid . . . . . . . . . . . . . . 28
AWD Actuator Relay . . . . . . . . . . . ... 31
Engine Control Signal . . . . . . . . . . . . 32
DIAGNOSTIC PROCEDURE . . . . . . . .. 32
CAN Communication Line . . . . . . . . . .. 32
DIAGNOSTIC PROCEDURE . . . . . . . .. 32
TROUBLE DIAGNOSIS FOR SYMPTOMS . . . .. 33
AWD Warning Lamp Does Not Turn ON When The
Ignition Switch Is Turned to ON . . . . . . . .. 33
DIAGNOSTIC PROCEDURE . . . . . . . .. 33
AWD Warning Lamp Does Not Turn OFF Several
Seconds after Engine Started . . . . . . . . . 33
TF-2
Started . . . . . . . . . . . . . . . . . 35
DIAGNOSTIC PROCEDURE . . . . . . . .. 35
Vehicle Does Not Enter AWD Mode Even Though
AWD Warning Lamp Turned to OFF . . . . . ... 36
DIAGNOSTIC PROCEDURE . . . . . . . .. 36
DIAGNOSTIC PROCEDURE . . . . . . . .. 37
AWD CONTROL UNIT . . . . . . . . . . . .. 39
Removal and Installation . . . . . . . . . . 39
REMOVAL . . . . . . . . . . . . . . ... 39
INSTALLATION . . . . . . . . . . . . . 39
FRONT OIL SEAL . . . . . . . . . . . . . . 40
Removal and Installation . . . . . . . . . . 40
REMOVAL . . . . . . . . . . . . . . ... 40
INSTALLATION . . . . . . . . . . . . . 40
REAR OIL SEAL . . . . . . . . . . . . . ...41
Removal and Installation . . . . . . . . . . .41
REMOVAL . . . . . . . . . . . . . . . 41
INSTALLATION . . . . . . . . . . . . . 42
AIR BREATHER HOSE . . . . . . . . . . . .43
Removal and Installation . . . . . . . . . . .43
TRANSFER ASSEMBLY . . . . . . . . . . ...44
Removal and Installation . . . . . . . . . . .44
REMOVAL . . . . . . . . . . . . . . . 44
INSTALLATION . . . . . . . . . . . . . 44
Disassembly and Assembly . . . . . . . . . 45
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