Infiniti QX56 (Z62). Manual - part 450

DLK-266

< REMOVAL AND INSTALLATION >

AUTOMATIC BACK DOOR SWITCH

AUTOMATIC BACK DOOR SWITCH

Removal and Installation

INFOID:0000000006226133

REMOVAL

1.

Remove the instrument driver lower panel. Refer to 

IP-14, "Removal and Installation"

.

2.

Widen the pawl, and remove the automatic back door switch from automatic back door switch finisher.

INSTALLATION

Install in the reverse order of removal.

DLN-1

TRANSMISSION & DRIVELINE

C

E

F

G

H

I

J

K

L

M

SECTION 

DLN

A

B

DLN

N

O

P

CONTENTS

DRIVELINE

TRANSFER: ATX90A

PRECAUTION ...............................................

6

PRECAUTIONS ...................................................

6

Precaution for Supplemental Restraint System 
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ...................................................................

6

Precaution Necessary for Steering Wheel Rota-
tion after Battery Disconnect  .....................................

6

Service Notice or Precautions for Transfer  ...............

7

PREPARATION ............................................

8

PREPARATION ...................................................

8

Special Service Tools ................................................

8

Commercial Service Tools  ........................................

8

SYSTEM DESCRIPTION  .............................

10

COMPONENT PARTS  .......................................

10

Component Parts Location ......................................

10

Component Description ...........................................

11

Transfer Control Unit ...............................................

11

Transfer Control Actuator ........................................

11

Transfer Hi-Lo Position Sensor  ...............................

12

Transfer Rotary Position Sensor  .............................

12

Transfer Lock Position Sensor  ................................

12

Transfer Fluid Temperature Sensor  ........................

12

STRUCTURE AND OPERATION .......................

13

Sectional View .........................................................

13

Torque Split Mechanism  .........................................

13

SYSTEM .............................................................

18

4WD SYSTEM  ...........................................................

18

4WD SYSTEM : System Description ......................

18

4WD SYSTEM : Fail-Safe  .......................................

20

DIAGNOSIS SYSTEM (TRANSFER CON-
TROL UNIT) ........................................................

21

CONSULT-III Function  ............................................

21

ECU DIAGNOSIS INFORMATION ..............

24

TRANSFER CONTROL UNIT  ...........................

24

Reference Value ......................................................

24

Fail-Safe ..................................................................

28

DTC Inspection Priority Chart ..................................

29

DTC Index  ...............................................................

29

WIRING DIAGRAM  ......................................

31

4WD SYSTEM  ...................................................

31

Wiring Diagram ........................................................

31

BASIC INSPECTION  ...................................

38

DIAGNOSIS AND REPAIR WORK FLOW  .......

38

Work Flow ................................................................

38

Diagnostic Work Sheet  ............................................

39

ADDITIONAL SERVICE WHEN REPLACING 
TRANSFER CONTROL UNIT  ...........................

41

Description ...............................................................

41

Work Procedure .......................................................

41

ADDITIONAL SERVICE WHEN REPLACING 
TRANSFER ASSEMBLY  ..................................

42

Description ...............................................................

42

Work Procedure .......................................................

42

TRANSFER LOCK POSITION SENSOR 
LEARNING ........................................................

44

Description ...............................................................

44

Work Procedure .......................................................

44

TRANSFER ROTARY POSITION SENSOR 
LEARNING ........................................................

46

Description ...............................................................

46

Work Procedure .......................................................

46

TRANSFER FLUID VISCOSITY LEARNING ....

47

Description ...............................................................

47

DLN-2

Work Procedure ......................................................

47

CONFIGURATION (TRANSFER CONTROL 
UNIT) ..................................................................

48

Description ..............................................................

48

Work Procedure ......................................................

48

DTC/CIRCUIT DIAGNOSIS .........................

51

P1802, P1803, P1804, P1809 TRANSFER 
CONTROL UNIT  ................................................

51

DTC Logic ...............................................................

51

Diagnosis Procedure  ..............................................

51

P1807 OUT PUT SHAFT SPEED SENSOR  ......

52

DTC Logic ...............................................................

52

Diagnosis Procedure  ..............................................

52

P1808 WHEEL SPEED SENSOR ......................

53

DTC Logic ...............................................................

53

Diagnosis Procedure  ..............................................

53

P180C SENSOR POWER SUPPLY (5V)  ..........

54

Description ..............................................................

54

DTC Logic ...............................................................

54

Diagnosis Procedure  ..............................................

54

P180D TRANSFER ROTARY POSITION 
SENSOR ............................................................

57

DTC Logic ...............................................................

57

Diagnosis Procedure  ..............................................

57

P180E SENSOR POWER SUPPLY (8V) ...........

59

Description ..............................................................

59

DTC Logic ...............................................................

59

Diagnosis Procedure  ..............................................

59

P180F TRANSFER INTERNAL SPEED SEN-
SOR ....................................................................

61

DTC Logic ...............................................................

61

Diagnosis Procedure  ..............................................

61

P1811 POWER SUPPLY CIRCUIT FOR 
TRANSFER CONTROL UNIT ............................

64

Description ..............................................................

64

DTC Logic ...............................................................

64

Diagnosis Procedure  ..............................................

64

P1813 4WD MODE SWITCH  .............................

67

DTC Logic ...............................................................

67

Diagnosis Procedure  ..............................................

67

Component Inspection ............................................

68

P1816 PARKING/NEUTRAL POSITION 
SWITCH .............................................................

69

DTC Logic ...............................................................

69

Diagnosis Procedure  ..............................................

69

P1817 TRANSFER MOTOR  ..............................

70

DTC Logic ...............................................................

70

Diagnosis Procedure  ..............................................

70

Component Inspection  ............................................

71

P181A TRANSFER MOTOR TEMPERATURE 
SENSOR ............................................................

72

DTC Logic  ...............................................................

72

Diagnosis Procedure ...............................................

72

Component Inspection  ............................................

73

P181B INCOMPLETE SELFSHUT ....................

74

DTC Logic  ...............................................................

74

Diagnosis Procedure ...............................................

74

P181C TRANSFER MOTOR POWER SUP-
PLY ....................................................................

76

Description ..............................................................

76

DTC Logic  ...............................................................

76

Diagnosis Procedure ...............................................

76

P181E STEERING ANGLE SENSOR  ...............

77

DTC Logic  ...............................................................

77

Diagnosis Procedure ...............................................

77

P181F INCOMPLETE CALIBRATION  ..............

78

DTC Logic  ...............................................................

78

Diagnosis Procedure ...............................................

78

P1820 ENGINE SPEED SIGNAL  ......................

79

DTC Logic  ...............................................................

79

Diagnosis Procedure ...............................................

79

P1826 TRANSFER FLUID TEMPERATURE  ....

80

DTC Logic  ...............................................................

80

Diagnosis Procedure ...............................................

80

Component Inspection  ............................................

81

P1829 ACCELERATOR PEDAL POSITION 
SENSOR ............................................................

82

DTC Logic  ...............................................................

82

Diagnosis Procedure ...............................................

82

P182A TRANSFER HI-LO POSITION SEN-
SOR ...................................................................

83

DTC Logic  ...............................................................

83

Diagnosis Procedure ...............................................

83

P182B TRANSFER LOCK POSITION SEN-
SOR ...................................................................

85

DTC Logic  ...............................................................

85

Diagnosis Procedure ...............................................

85

P1830 ABS OPERATION SIGNAL  ...................

88

DTC Logic  ...............................................................

88

Diagnosis Procedure ...............................................

88

P1831 VDC OPERATION SIGNAL  ...................

89

DTC Logic  ...............................................................

89

Diagnosis Procedure ...............................................

89

P1832 TCS OPERATION SIGNAL ....................

90

DTC Logic  ...............................................................

90

Diagnosis Procedure ...............................................

90

DLN-3

C

E

F

G

H

I

J

K

L

M

A

B

DLN

N

O

P

U1000 CAN COMM CIRCUIT .............................

91

Description ..............................................................

91

DTC Logic  ...............................................................

91

Diagnosis Procedure ...............................................

91

U1010 CONTROL UNIT (CAN)  ..........................

92

Description ..............................................................

92

DTC Logic  ...............................................................

92

Diagnosis Procedure ...............................................

92

POWER SUPPLY AND GROUND CIRCUIT ......

93

Description ..............................................................

93

Diagnosis Procedure ...............................................

93

4WD WARNING LAMP  ......................................

97

Component Function Check ....................................

97

Diagnosis Procedure ...............................................

97

4WD INDICATOR LAMP  ....................................

98

Component Function Check ....................................

98

Diagnosis Procedure ...............................................

98

SYMPTOM DIAGNOSIS  ..............................

99

HEAVY TIGHT-CORNER BRAKING SYMP-
TOM OCCURS  ...................................................

99

Description ..............................................................

99

Diagnosis Procedure ...............................................

99

4WD MODE DOES NOT CHANGE  ..................

100

Description ............................................................

100

Diagnosis Procedure .............................................

100

4WD MODE INDICATOR LAMP CONTINUES 
BLINKING .........................................................

101

Description ............................................................

101

Diagnosis Procedure .............................................

101

4WD WARNING LAMP BLINKS QUICKLY .....

102

Description ............................................................

102

4WD WARNING LAMP BLINKS SLOWLY  .....

103

Description ............................................................

103

Diagnosis Procedure .............................................

103

INFORMATION DISPLAY IS NOT DIS-
PLAYED ...........................................................

104

Description ............................................................

104

Diagnosis Procedure .............................................

104

NOISE, VIBRATION AND HARSHNESS 
(NVH) TROUBLESHOOTING  ..........................

105

NVH Troubleshooting Chart  ..................................

105

PERIODIC MAINTENANCE .......................

106

TRANSFER FLUID  ...........................................

106

Inspection ..............................................................

106

Draining .................................................................

106

Refilling .................................................................

106

REMOVAL AND INSTALLATION .............

107

TRANSFER CONTROL UNIT  .........................

107

Removal and Installation  .......................................

107

4WD MODE SWITCH ......................................

108

Removal and Installation  .......................................

108

FRONT OIL SEAL ...........................................

109

Exploded View .......................................................

109

Removal and Installation  .......................................

109

REAR OIL SEAL  .............................................

111

Exploded View .......................................................

111

Removal and Installation  .......................................

111

Adjustment .............................................................

112

TRANSFER CONTROL ACTUATOR  .............

114

Exploded View .......................................................

114

Removal and Installation  .......................................

114

Inspection ..............................................................

114

TRANSFER HI-LO POSITION SENSOR  ........

116

Exploded View .......................................................

116

Removal and Installation  .......................................

116

Inspection ..............................................................

116

TRANSFER ROTARY POSITION SENSOR ...

117

Exploded View .......................................................

117

Removal and Installation  .......................................

117

Inspection ..............................................................

118

TRANSFER LOCK POSITION SENSOR ........

119

Exploded View .......................................................

119

Removal and Installation  .......................................

119

Inspection ..............................................................

119

TRANSFER FLUID TEMPERATURE SEN-
SOR .................................................................

120

Exploded View .......................................................

120

Removal and Installation  .......................................

120

Inspection ..............................................................

120

UNIT REMOVAL AND INSTALLATION ....

121

TRANSFER ASSEMBLY  ................................

121

Exploded View .......................................................

121

Removal and Installation  .......................................

121

INPUT OIL SEAL  ............................................

123

Exploded View .......................................................

123

Removal and Installation  .......................................

123

SERVICE DATA AND SPECIFICATIONS 
(SDS) ..........................................................

124

SERVICE DATA AND SPECIFICATIONS 
(SDS) ...............................................................

124

General Specifications ...........................................

124

FRONT PROPELLER SHAFT: 2F P15

PREPARATION .........................................

125

PREPARATION ...............................................

125