Qashqai J11. Driveline - part 1

 

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Qashqai J11. Driveline - part 1

 

 

DLN-1

TRANSMISSION & DRIVELINE

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SECTION 

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CONTENTS

DRIVELINE

TRANSFER: TY21C

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

6

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

6

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

6

Precaution for Battery Service  ..................................

6

Precaution for Procedure without Cowl Top Cover 

......

6

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

6

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

8

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

8

Special Service Tool  .................................................

8

Commercial Service Tool  ..........................................

8

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

11

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

11

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

11

4WD Control Unit  ....................................................

12

Electric Controlled Coupling ....................................

12

4WD Solenoid  .........................................................

12

4WD Mode Switch ...................................................

12

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

13

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

13

Operation Description  .............................................

13

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

15

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

15

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

15

4WD SYSTEM : Control in Each Mode ...................

16

4WD SYSTEM : Circuit Diagram .............................

17

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

17

4WD SYSTEM : Protection Function ......................

18

INFORMATION DISPLAY (COMBINATION 
METER) .....................................................................

18

INFORMATION DISPLAY (COMBINATION 
METER) : 4WD Warning  .........................................

18

INFORMATION DISPLAY (COMBINATION 
METER) : 4WD Torque Distribution Indicator ..........

19

WARNING/INDICATOR/CHIME LIST ........................

19

WARNING/INDICATOR/CHIME LIST : Warning 
Lamp/Indicator Lamp ...............................................

19

WARNING/INDICATOR/CHIME LIST : Warning/
Indicator (On Information Display) ...........................

20

DIAGNOSIS SYSTEM (4WD CONTROL 
UNIT) .................................................................

21

CONSULT Function .................................................

21

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

23

4WD CONTROL UNIT .......................................

23

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

23

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

25

Protection Function ..................................................

26

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

26

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

26

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

28

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

28

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

28

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

33

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

33

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

33

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

34

ADDITIONAL SERVICE WHEN REPLACING 
4WD CONTROL UNIT .......................................

36

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

36

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

36

UNIT CHARACTERISTICS WRITING  ..............

37

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

37

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

37

DLN-2

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

38

C1201 4WD CONTROL UNIT ............................

38

DTC Description  .....................................................

38

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

38

C1203 ABS ACTUATOR AND ELECTRIC 
UNIT (CONTROL UNIT)  ....................................

39

DTC Description  .....................................................

39

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

39

C1204 4WD SOLENOID  ....................................

40

DTC Description  .....................................................

40

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

40

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

42

C1209 MODE SW  ..............................................

43

DTC Description  .....................................................

43

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

43

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

45

C1210 ECM  ........................................................

46

DTC Description  .....................................................

46

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

46

P1804 4WD CONTROL UNIT  ............................

47

DTC Description  .....................................................

47

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

47

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

48

DTC Description  .....................................................

48

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

48

P1809 4WD CONTROL UNIT  ............................

49

DTC Description  .....................................................

49

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

49

P1811 BATTERY VOLTAGE .............................

50

DTC Description  .....................................................

50

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

50

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

53

DTC Description  .....................................................

53

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

53

P181D ENGINE TORQUE SIGNAL ...................

56

DTC Description  .....................................................

56

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

56

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

57

DTC Description  .....................................................

57

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

57

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

58

DTC Description  .....................................................

58

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

58

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

59

DTC Description  .....................................................

59

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

59

POWER SUPPLY AND GROUND CIRCUIT  .....

60

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

60

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

63

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

63

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

63

LOCK INDICATOR LAMP  .................................

64

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

64

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

64

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

65

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

65

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

65

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

65

VEHICLE DOES NOT ENTER 4WD MODE  ......

66

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

66

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

66

4WD HIGH TEMP IS DISPLAYED ON INFOR-
MATION DISPLAY  ............................................

67

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

67

TIRE SIZE INCORRECT IS DISPLAYED ON 
INFORMATION DISPLAY  .................................

68

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

68

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

68

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

69

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

69

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

70

TRANSFER OIL .................................................

70

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

70

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

70

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

70

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

72

4WD CONTROL UNIT  .......................................

72

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

72

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

72

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

72

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

73

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

73

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

73

TRANSFER COVER OIL SEAL  ........................

74

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

74

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

74

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

75

UNIT REMOVAL AND INSTALLATION  ....

76

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

76

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

76

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

76

DLN-3

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

77

UNIT DISASSEMBLY AND ASSEMBLY  ....

78

TRANSFER COVER ...........................................

78

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

78

Disassembly ............................................................

79

Assembly .................................................................

80

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

81

RING GEAR SHAFT ...........................................

82

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

82

Disassembly ............................................................

83

Assembly .................................................................

84

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

85

DRIVE PINION ....................................................

86

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

86

Disassembly ............................................................

87

Assembly .................................................................

87

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

88

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

93

TRANSFER CASE  .............................................

94

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

94

Disassembly ............................................................

95

Assembly .................................................................

95

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

96

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

97

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

97

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

97

Preload Torque  .......................................................

97

Backlash ..................................................................

97

Companion Flange Runout  .....................................

97

TRANSFER: TY30A

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

98

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

98

Precautions for Removing Battery Terminal  ...........

98

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

99

Precaution for Procedure without Cowl Top Cover 

....

99

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

99

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

101

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

101

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

101

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

102

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

104

DIAGNOSIS AND REPAIR WORKFLOW  .......

104

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

104

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

105

AWD SYSTEM  ................................................

105

System Diagram  ....................................................

105

System Description ................................................

106

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

108

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

108

DIAGNOSIS SYSTEM (AWD CONTROL 
UNIT) ...............................................................

109

CONSULT Function ...............................................

109

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

111

C1201 AWD CONTROL UNIT  ........................

111

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

111

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

111

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

111

C1203 ABS ACTUATOR AND ELECTRIC 
UNIT (CONTROL UNIT) ..................................

112

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

112

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

112

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

112

C1204 AWD SOLENOID .................................

113

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

113

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

113

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

113

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

115

C1209 MODE SW ............................................

116

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

116

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

116

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

116

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

118

C1210 ECM  .....................................................

119

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

119

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

119

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

119

P1804 CONTROL MODULE  ...........................

120

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

120

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

120

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

121

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

121

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

121

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

122

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

122

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

122

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

122

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

123

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

123

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

123

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

123

POWER SUPPLY AND GROUND CIRCUIT  ..

124

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

124

DLN-4

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

124

AWD WARNING LAMP  ...................................

126

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

126

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

126

AWD MODE INDICATOR LAMP (AWD)  .........

127

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

127

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

127

LOCK INDICATOR LAMP  ...............................

128

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

128

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

128

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

129

AWD CONTROL UNIT .....................................

129

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

129

Wiring Diagram - AWD SYSTEM -  ........................

131

Fail Safe  ................................................................

140

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

141

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

141

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

143

AWD SYSTEM SYMPTOMS  ...........................

143

Symptom Table  .....................................................

143

AWD WARNING LAMP DOES NOT TURN ON 

.

144

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

144

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

144

AWD WARNING LAMP DOES NOT TURN 
OFF ..................................................................

145

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

145

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

145

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

146

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

146

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

146

VEHICLE DOES NOT ENTER AWD MODE  ...

147

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

147

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

147

AWD WARNING LAMP BLINKS QUICKLY  ...

148

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

148

AWD WARNING LAMP BLINKS SLOWLY  ....

149

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

149

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

149

NORMAL OPERATING CONDITION  ..............

150

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

150

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

151

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

151

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

152

TRANSFER OIL ................................................

152

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

152

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

152

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

152

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

153

AWD CONTROL UNIT  .....................................

153

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

153

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

153

AWD MODE SWITCH .......................................

154

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

154

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

154

UNIT REMOVAL AND INSTALLATION  ...

155

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

155

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

155

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

155

UNIT DISASSEMBLY AND ASSEMBLY ..

157

ADAPTER CASE ..............................................

157

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

157

Disassembly ..........................................................

158

Assembly ..............................................................

158

Inspection After Disassembly ................................

159

RING GEAR SHAFT  .........................................

160

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

160

Disassembly ..........................................................

161

Assembly ..............................................................

162

Inspection After Disassembly ................................

163

DRIVE PINION ..................................................

164

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

164

Disassembly ..........................................................

165

Assembly ..............................................................

166

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

167

Inspection After Disassembly ................................

176

TRANSFER CASE ............................................

177

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

177

Disassembly ..........................................................

178

Assembly ..............................................................

178

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

179

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

180

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

180

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

180

Preload Torque  .....................................................

180

Backlash ...............................................................

180

Companion Flange Runout  ...................................

180

REAR PROPELLER SHAFT: C-CVJ-C

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

181

DLN-5

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

181

Precautions for Removing Battery Terminal  .........

181

Service Notice or Precautions for Propeller Shaft 

..

181

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

183

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

183

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

183

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

184

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

184

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

184

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

185

REAR PROPELLER SHAFT ............................

185

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

185

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

186

REAR PROPELLER SHAFT ............................

186

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

186

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

186

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

189

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

191

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

191

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

191

Propeller Shaft Runout ..........................................

191

Journal Axial Play ..................................................

191

REAR FINAL DRIVE: R145

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

192

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

192

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

192

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

193

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

193

Service Notice or Precautions for Rear Final Drive 

..

193

Precautions for Removing Battery Terminal  .........

193

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

195

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

195

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

195

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

196

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

198

REAR FINAL DRIVE ASSEMBLY  ...................

198

System Diagram ....................................................

198

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

199

REAR DIFFERENTIAL GEAR OIL  .................

199

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

199

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

199

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

199

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

200

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

200

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

200

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

200

SIDE OIL SEAL ...............................................

202

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

202

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

202

ELECTRIC CONTROLLED COUPLING  .........

203

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

203

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

203

UNIT REMOVAL AND INSTALLATION ....

207

REAR FINAL DRIVE ASSEMBLY  ..................

207

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

207

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

207

UNIT DISASSEMBLY AND ASSEMBLY  ..

209

ELECTRIC CONTROLLED COUPLING  .........

209

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

209

Disassembly ..........................................................

210

Assembly ...............................................................

210

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

212

Inspection After Disassembly  ................................

212

DIFFERENTIAL ASSEMBLY  ..........................

213

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

213

Disassembly ..........................................................

214

Assembly ...............................................................

215

Inspection After Disassembly  ................................

218

DRIVE PINION  ................................................

219

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

219

Disassembly ..........................................................

220

Assembly ...............................................................

221

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

224

Inspection After Disassembly  ................................

227

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

229

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

229

General Specification  ............................................

229

Drive Gear Runout .................................................

229

Differential Side Gear Clearance ...........................

229

Preload Torque ......................................................

229

Backlash ................................................................

229

Companion Flange Runout ....................................

229

DLN-6

< PRECAUTION >

[TRANSFER: TY21C]

PRECAUTIONS

PRECAUTION

PRECAUTIONS

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

INFOID:0000000010590148

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. Information necessary to service the system safely is included in the SR and SB section of
this Service Manual.

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 performed by
an authorized NISSAN/INFINITI dealer.

• Improper maintenance, including incorrect removal and installation of the SRS, can lead to personal

injury caused by unintentional activation of the system. For removal of Spiral Cable and Air Bag
Module, see the SR 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 har-
ness connectors.

PRECAUTIONS WHEN USING POWER TOOLS (AIR OR ELECTRIC) AND HAMMERS

WARNING:

• When working near the Airbag Diagnosis Sensor Unit or other Airbag System sensors with the Igni-

tion ON or engine running, DO NOT use air or electric power tools or strike near the sensor(s) with a
hammer. Heavy vibration could activate the sensor(s) and deploy the air bag(s), possibly causing
serious injury.

• When using air or electric power tools or hammers, always switch the Ignition OFF, disconnect the

battery and wait at least 3 minutes before performing any service.

Precaution for Battery Service

INFOID:0000000010590149

Before disconnecting the battery, lower both the driver and passenger windows. This will prevent any interfer-
ence between the window edge and the vehicle when the door is opened/closed. During normal operation, the
window slightly raises and lowers automatically to prevent any window to vehicle interference. The automatic
window function will not work with the battery disconnected.

Precaution for Procedure without Cowl Top Cover

INFOID:0000000010590150

When performing the procedure after removing cowl top cover, cover
the lower end of windshield with urethane, etc. to prevent damage to
windshield.

Service Notice or Precautions for Transfer

INFOID:0000000010590151

• After overhaul refill the transfer with new transfer oil.
• Check the oil level or replace the oil only with the vehicle parked on level surface.
• During removal or installation, keep inside of transfer clear of dust or dirt.
• Replace all tires at the same time. Always use tires of the proper size and the same brand and pattern. Fit-

ting improper size and unusual wear tires applies excessive force to vehicle mechanism and can cause lon-
gitudinal vibration.

• Disassembly should be done in a clean work area.

PIIB3706J

PRECAUTIONS

DLN-7

< PRECAUTION >

[TRANSFER: TY21C]

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• Before proceeding with disassembly, thoroughly clean the transfer. It is important to prevent the internal

parts from becoming contaminated by dirt or other foreign matter.

• Check for the correct installation status prior to removal or disassembly. If matching marks are required, be

certain they do not interfere with the function of the parts when applied.

• All parts should be carefully cleaned with a general purpose, non-flammable solvent before inspection or

reassembly.

• Check appearance of the disassembled parts for damage, deformation, and unusual wear. Replace them

with a new one if necessary.

• Gaskets, seals, O-rings and lock nuts should be replaced any time when the transfer is disassembled.
• In principle, tighten bolts or nuts gradually in several steps working diagonally from inside to outside. If tight-

ening sequence is specified, use it.

• Observe the specified torque when assembling.
• Clean and flush the parts sufficiently and blow-dry them.
• Be careful not to damage sliding surfaces and mating surfaces.
• Use lint-free cloth or towels for wiping parts clean. Common shop rags can leave fibers that could interfere

with the operation of the transfer.

DLN-8

< PREPARATION >

[TRANSFER: TY21C]

PREPARATION

PREPARATION

PREPARATION

Special Service Tool

INFOID:0000000010590152

The actual shape of the tools may differ from those illustrated here.

Commercial Service Tool

INFOID:0000000010590153

Tool number
(TechMate No.)
Tool name

Description

ST33061000
(J-8107-2)
Drift
a: 38 mm (1.50 in) dia.
b: 28.5 mm (1.122 in) dia.

Removing ring gear bearing (left) inner race 
(transfer case side)

KV381054S0
(J-34286)
Puller

Removing ring gear shaft oil seal

ST3127S000
(J-25765-A)
Preload gauge

Measuring preload torque

ZZA0810D

ZZA0601D

ZZA0503D

Tool name

Description

Power tool

Loosening nuts, screws and bolts

Drift
a: 52 mm (2.05 in) dia.
b: 44 mm (1.73 in) dia.

Removing gear ring bearing inner race 
(adapter case side)

PIIB1407E

ZZA1002D

PREPARATION

DLN-9

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Drift
a: 56.5 mm (2.224 in) dia.
b: 48 mm (1.89 in) dia.

Installing side oil seal (installing transfer case 
oil seal)

Drift
a: 44 mm (1.73 in) dia.
b: 33 mm (1.3 in) dia.

Installing ring gear shaft oil seal

Puller

Removing ring gear bearing (left) inner race 
(transfer case side)

Drift
a: 70 mm (2.76 in) dia.
b: 60 mm (2.36 in) dia.

Installing oil seal (installing pinion bearing 
seal)

Drift
a: 78 mm (3.07 in) dia.
b: 68 mm (2.68 in) dia.

Installing side oil seal (installing transfer cover 
oil seal)

Replacer

• Removing drive pinion
• Removing ring gear bearing (left) inner race 

(transfer cover side)

Drift
a: 58 mm (2.28 in) dia.
b: 55 mm (2.17 in) dia.

Installing ring gear bearing (left) inner race 
(transfer case side)

Tool name

Description

NT115

NT115

NT077

NT115

NT115

ZZA0700D

NT115

DLN-10

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PREPARATION

Drift
a: 62 mm (2.44 in) dia.
b: 58 mm (2.28 in) dia.

Installing ring gear bearing (right) inner race 
(transfer cover side)

Drift
a: 73.5 mm (2.894 in) dia.

Installing ring gear bearing (left) outer race 
(transfer case side)

Drift
a: 87 mm (3.43 in) dia.

Installing ring gear bearing (right) outer race 
(transfer cover side)

Drift
a: 20 mm (0.79 in) dia.

Removing drive pinion

Drift
a: 50 mm (1.97 in) dia.
b: 41 mm (1.61 in) dia.

Installing pinion bearing

Drift
a: 40 mm (1.57 in) dia.
b: 25 mm (0.98 in) dia.

Installing companion flange

Tool name

Description

NT115

SCIA5338E

SCIA5338E

SCIA5338E

NT115

NT115

COMPONENT PARTS

DLN-11

< SYSTEM DESCRIPTION >

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SYSTEM DESCRIPTION

COMPONENT PARTS

Component Parts Location

INFOID:0000000010755224

Console switch panel

Rear wheel house outer panel in lug-
gage room of left side

Rear final drive

No.

Component

Function

ECM

Mainly transmits the following signals to 4WD control unit via CAN communication.
• Accelerator pedal position signal
• Engine speed signal
• Engine status signal
For detailed installation location, refer to 

ECM-14, "ENGINE CONTROL SYSTEM : 

Component Parts Location"

 (MR20DD).

Steering angle sensor

Mainly transmits the following signals to 4WD control unit via CAN communication.
• steering angle sensor signal
For detailed installation location, refer to 

STC-7, "Component Parts Location"

.

Combination meter

Mainly transmits the following signals to 4WD control unit via CAN communication.
• Parking brake switch signal
Mainly receives the following signals from 4WD control unit via CAN communication.
• 4WD warning lamp signal
• 4WD mode indicator lamp signal
• Torque distribution indicator signal
For detailed installation location, refer to 

MWI-6, "Component Parts Location"

.

JSDIA5445ZZ

DLN-12

< SYSTEM DESCRIPTION >

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COMPONENT PARTS

4WD Control Unit

INFOID:0000000010755225

• Controls driving force distribution by signals from each sensor from front wheel driving mode (100:0) to 4-

wheel driving mode (50:50).

• Fail-safe mode is available if malfunction is detected in 4WD system. For fail-safe, refer to 

DLN-17, "4WD

SYSTEM : Fail-Safe"

.

4WD ACTUATOR RELAY

4WD actuator relay is integrated with 4WD control unit, and supplies 4WD solenoid with voltage. 

Electric Controlled Coupling

INFOID:0000000010755226

Electric controlled coupling is integrated with rear final drive and transmits driving force to rear final drive. For
operation, refer to 

DLN-13, "Operation Description"

.

4WD Solenoid

INFOID:0000000010755227

• 4WD solenoid is integrated with electric controlled coupling.
• Controls electric controlled coupling by command current from 4WD control unit.

4WD Mode Switch

INFOID:0000000010755228

4WD mode is selectable among 2WD mode, AUTO mode, and LOCK mode by operating the 4WD mode
switch while the engine is running.

ABS actuator and electric unit (con-
trol unit)

Mainly transmits the following signals to 4WD control unit via CAN communication.
• Each wheel speed signal
• Decel G sensor signal
• Side G sensor signal
• Yaw rate sensor signal
For detailed installation location, refer to 

BRC-8, "Component Parts Location"

 or 

BRC-

148, "Component Parts Location"

.

4WD mode switch

Refer to 

DLN-12, "4WD Mode Switch"

.

4WD control unit
• 4WD actuator relay

Refer to 

DLN-12, "4WD Control Unit"

.

Electric controlled coupling

Refer to 

DLN-12, "Electric Controlled Coupling"

.

4WD solenoid

Refer to 

DLN-12, "4WD Solenoid"

.

No.

Component

Function

STRUCTURE AND OPERATION

DLN-13

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STRUCTURE AND OPERATION

Sectional View

INFOID:0000000010755229

Operation Description

INFOID:0000000010755230

POWER TRANSFER DIAGRAM

1.

Transfer cover

2.

Transfer case

3.

Ring gear bearing (transfer case side)

4.

Ring gear shaft

5.

Pinion bearing

6.

Drive pinion

7.

Companion flange

8.

Ring gear

9.

Ring gear bearing (transfer cover 
side)

JSDIA3966ZZ

DLN-14

< SYSTEM DESCRIPTION >

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STRUCTURE AND OPERATION

ELECTRIC CONTROLLED COUPLING

1.

The 4WD control unit supplies command current to electric con-
trolled coupling (4WD solenoid).

2.

The control clutch is engaged by electromagnet and torque is
detected in control clutch.

3.

The cam operates in response to control clutch torque and
applies pressure to main clutch.

4.

The main clutch transmits torque to front wheels according to
pressing power.

• Transmission torque to the rear wheels is determined accord-

ing to command current.

Engine

Transaxle

Transfer

Propeller shaft

Electric controlled coupling

Rear final drive

JSDIA0961ZZ

JSDIA0972GB

SDIA1844E

SYSTEM

DLN-15

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SYSTEM

4WD SYSTEM

4WD SYSTEM : System Description

INFOID:0000000010755231

• Pressing force of multiple disc clutch is controlled by electric control. Driving torque distribution of front and

rear wheels changes automatically between approximately 100 : 0 (2WD) and 50 : 50 (4WD) to have an opti-
mized torque distribution adapted to road condition change.

• Driving mode is selectable among 2WD mode, AUTO mode, and LOCK mode by operating the 4WD mode

switch.

• In accordance with fail-safe function, when system is malfunctioning, 4WD control stops, and the system

becomes 2WD or slight 4WD (rear-wheels still have some driving torque). Refer to 

DLN-17, "4WD SYSTEM

: Fail-Safe"

.

• When a high load status continues for electric controlled coupling, 4WD control temporarily becomes front

wheel drive, according to protection function. Refer to 

DLN-18, "4WD SYSTEM : Protection Function"

.

SYSTEM DIAGRAM

Signal with Communication Line

Major signal transmission between each unit via CAN communication lines are shown in the following table.

JSDIA6026GB

Component parts

Signal item

Combination meter

Mainly transmits the following signals to 4WD control unit via CAN communication.
• Parking brake switch signal
Mainly receives the following signals from 4WD control unit via CAN communication.
• 4WD warning lamp signal
• 4WD mode indicator lamp signal
• Torque distribution indicator signal

Steering angle sensor

Mainly transmits the following signals to 4WD control unit via CAN communication.
• steering angle sensor signal

DLN-16

< SYSTEM DESCRIPTION >

[TRANSFER: TY21C]

SYSTEM

4WD SYSTEM : Control in Each Mode

INFOID:0000000010755232

2WD MODE

• Vehicle is in front-wheel drive.

CAUTION:

If front wheels are slipping in 2WD mode, do not switch to AUTO or LOCK. This can cause difficulties
for the system.
NOTE:
The 4WD control unit may distribute the minimum necessary driving torque to rear wheels even when the
2WD mode is selected, depending on the driving condition. (However AUTO or LOCK indicator lamp does not
illuminate.)

AUTO MODE

• Electronic control allows optimal distribution of torque to front/rear wheels to match road conditions.
• Pressing force of multiple disc clutch is controlled by electric control. Driving torque distribution of front and

rear wheels changes automatically between approximately 100 : 0 (2WD) and 50 : 50 (4WD) to have an opti-
mized torque distribution adapted to road condition change.

• Sensor inputs determine the vehicle's turning condition, and tight cornering/braking are controlled by distrib-

uting optimum torque to rear wheels.

Vehicle Starts Control

• At the start, torque distribution for front and rear wheels is fixed by electric control and stable start is

achieved.

• Makes possible stable driving, with no wheel spin, on snowy roads or other slippery surfaces.

Normal Control

• On roads which do not require 4WD, it contributes to improved fuel economy by driving in conditions close to

front-wheel drive and it results in better fuel efficiency.

• When spin occurs on front wheel, distribute optimum torque to rear wheel and keep stable driving.
• The vehicle cornering status is judged according to information from each sensor, and the optimum torque is

distributed to rear wheels for preventing tight cornering/braking symptom.

LOCK MODE

• Front/rear wheel torque distribution is fixed, ensuring stable driving when climbing slopes.
• In LOCK mode, the pressing force to the multiple disc clutches is maximized by the electronic control and

the driving torque distribution of front and rear wheels is fixed to obtain the 4WD status of approximately 50 :
50.
NOTE:
Only torque distribution may be switched to the control same as the one in AUTO mode, depending on the
driving condition.

• LOCK mode will change to AUTO mode automatically, when the vehicle has been driven at a high speed.

Then LOCK mode control is canceled and the LOCK indicator lamp turns off.

• When vehicle speed exceeds the specified speed, the mode cannot be switched from AUTO mode to LOCK

mode.

• LOCK mode will change to AUTO mode automatically, when the ignition switch is turned OFF in LOCK

mode.

NOTE:

ABS actuator and electric unit (control unit)

Mainly transmits the following signals to 4WD control unit via CAN communication.
• Each wheel speed signal
• Decel G sensor signal
• Side G sensor signal
• Yaw rate sensor signal

ECM

Mainly transmits the following signals to 4WD control unit via CAN communication.
• Accelerator pedal position signal
• Engine speed signal
• Engine status signal

TCM

Mainly transmits the following signals to 4WD control unit via CAN communication.
• Input shaft revolutional signal
• CVT ratio signal

Component parts

Signal item

 

 

 

 

 

 

 

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