Nissan Xterra. Instruction — part 622

TM-1

TRANSMISSION & DRIVELINE

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SECTION

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CONTENTS

TRANSAXLE & TRANSMISSION

6MT: FS6R31A

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

6

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

6

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

6

DESCRIPTION . . . . . . . . . . . . .

7

Cross-Sectional View . . . . . . . . . . . ....

7

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

9

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

9

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

9

Service Notice or Precaution . . . . . . . . .....

9

Precaution for Work . . . . . . . . . . . . ..

9

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

11

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

11

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

11

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

13

PERIODIC MAINTENANCE . . . . . . .

15

M/T OIL . . . . . . . . . . . . . . . ...

15

Changing . . . . . . . . . . . . . . . . .

15

Checking . . . . . . . . . . . . . . . . .

15

REMOVAL AND INSTALLATION . . . ...

16

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

16

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

16

POSITION SWITCH . . . . . . . . . . .

17

Checking . . . . . . . . . . . . . . . . .

17

SHIFT CONTROL . . . . . . . . . . . ...

18

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

18

AIR BREATHER HOSE . . . . . . . . .

20

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

20

UNIT REMOVAL AND INSTALLATION . ..

21

TRANSMISSION ASSEMBLY . . . . . . ..

21

Removal and Installation from Vehicle . . . . .

21

UNIT DISASSEMBLY AND ASSEMBLY .

24

TRANSMISSION ASSEMBLY . . . . . . ..

24

Overhaul . . . . . . . . . . . . . . . . ..

24

CASE COMPONENTS . . . . . . . . . ..

30

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

30

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

33

SHIFT CONTROL COMPONENTS . . . . ...

40

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

40

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

43

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

43

GEAR COMPONENTS . . . . . . . . . ..

48

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

48

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

54

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

57

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

71

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

71

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

71

Gear End Play . . . . . . . . . . . . . . .

72

Snap Rings . . . . . . . . . . . . . . . ..

72

Baulk Ring Clearance . . . . . . . . . . . ..

72

5AT: RE5R05A

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

74

DIAGNOSIS AND REPAIR WORKFLOW . .

74

TM-2

How to Perform Trouble Diagnosis for Quick and
Accurate Repair . . . . . . . . . . . . . .
.

74

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

75

INSPECTION AND ADJUSTMENT . . . . ...

77

ADDITIONAL SERVICE WHEN REPLACING
TRANSMISSION ASSEMBLY . . . . . . . . .
.

77

ADDITIONAL SERVICE WHEN REPLACING
TRANSMISSION ASSEMBLY : Description . . ..
.

77

ADDITIONAL SERVICE WHEN REPLACING
TRANSMISSION ASSEMBLY : Special Repair
Requirement . . . . . . . . . . . . . . ..
.

77

SYSTEM DESCRIPTION . . . . . . .

78

A/T CONTROL SYSTEM . . . . . . . . ...

78

Cross-Sectional View . . . . . . . . . . . .

78

Shift Mechanism . . . . . . . . . . . . . .

79

TCM Function . . . . . . . . . . . . . . .

90

CAN Communication . . . . . . . . . . . ..

91

Input/Output Signal of TCM . . . . . . . . ....

92

Line Pressure Control . . . . . . . . . . . .

92

Shift Control . . . . . . . . . . . . . . ....

94

Lock-up Control . . . . . . . . . . . . . ..

95

Engine Brake Control . . . . . . . . . . . .

96

Control Valve . . . . . . . . . . . . . . ..

96

A/T Electrical Parts Location . . . . . . . . ..

98

A/T SHIFT LOCK SYSTEM . . . . . . . .

100

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

100

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

100

ON BOARD DIAGNOSTIC (OBD) SYSTEM ...

101

Introduction . . . . . . . . . . . . . . .

101

OBD-II Function for A/T System . . . . . . .

101

One or Two Trip Detection Logic of OBD-II . . ...

101

OBD-II Diagnostic Trouble Code (DTC) . . . .

101

Malfunction Indicator Lamp (MIL) . . . . . . ..

102

DIAGNOSIS SYSTEM (TCM) . . . . . . ..

103

CONSULT Function (TRANSMISSION) . . . .

103

Diagnosis Procedure without CONSULT . . . ...

108

DTC/CIRCUIT DIAGNOSIS . . . . . .

111

U0100 LOST COMMUNICATION (ECM A) . .

111

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

111

On Board Diagnosis Logic . . . . . . . . . .

111

Possible Cause . . . . . . . . . . . . . ..

111

DTC Confirmation Procedure . . . . . . . .

111

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

111

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

112

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

112

On Board Diagnosis Logic . . . . . . . . . .

112

Possible Cause . . . . . . . . . . . . . ..

112

DTC Confirmation Procedure . . . . . . . .

112

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

112

P0615 STARTER RELAY . . . . . . . .

113

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

113

CONSULT Reference Value in Data Monitor
Mode . . . . . . . . . . . . . . . . . .

113

On Board Diagnosis Logic . . . . . . . . .

113

Possible Cause . . . . . . . . . . . . . .

113

DTC Confirmation Procedure . . . . . . . .

113

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

113

P0700 TRANSMISSION CONTROL . . . .

115

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

115

On Board Diagnosis Logic . . . . . . . . .

115

Possible Cause . . . . . . . . . . . . . .

115

DTC Confirmation Procedure . . . . . . . .

115

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

115

P0705 TRANSMISSION RANGE SENSOR A ..

116

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

116

CONSULT Reference Value in Data Monitor
Mode . . . . . . . . . . . . . . . . . .

116

On Board Diagnosis Logic . . . . . . . . .

116

Possible Cause . . . . . . . . . . . . . .

116

DTC Confirmation Procedure . . . . . . . .

116

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

116

P0717 INPUT SPEED SENSOR A . . . . ...

118

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

118

CONSULT Reference Value in Data Monitor
Mode . . . . . . . . . . . . . . . . . .

118

On Board Diagnosis Logic . . . . . . . . .

118

Possible Cause . . . . . . . . . . . . . .

118

DTC Confirmation Procedure . . . . . . . .

118

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

118

P0720 OUTPUT SPEED SENSOR . . . . ...

120

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

120

CONSULT Reference Value in Data Monitor
Mode . . . . . . . . . . . . . . . . . .

120

On Board Diagnosis Logic . . . . . . . . .

120

Possible Cause . . . . . . . . . . . . . .

120

DTC Confirmation Procedure . . . . . . . .

120

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

121

P0725 ENGINE SPEED . . . . . . . . .

123

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

123

CONSULT Reference Value in Data Monitor
Mode . . . . . . . . . . . . . . . . . .

123

On Board Diagnosis Logic . . . . . . . . .

123

Possible Cause . . . . . . . . . . . . . .

123

DTC Confirmation Procedure . . . . . . . .

123

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

123

P0731 1GR INCORRECT RATIO . . . . . .

125

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

125

On Board Diagnosis Logic . . . . . . . . .

125

Possible Cause . . . . . . . . . . . . . .

125

DTC Confirmation Procedure . . . . . . . .

125

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

126

P0732 2GR INCORRECT RATIO . . . . . .

127

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

127

TM-3

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On Board Diagnosis Logic . . . . . . . . .

127

Possible Cause . . . . . . . . . . . . . .

127

DTC Confirmation Procedure . . . . . . . .

127

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

128

P0733 3GR INCORRECT RATIO . . . . . .

129

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

129

On Board Diagnosis Logic . . . . . . . . .

129

Possible Cause . . . . . . . . . . . . . .

129

DTC Confirmation Procedure . . . . . . . .

129

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

130

P0734 4GR INCORRECT RATIO . . . . . .

131

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

131

On Board Diagnosis Logic . . . . . . . . .

131

Possible Cause . . . . . . . . . . . . . .

131

DTC Confirmation Procedure . . . . . . . .

131

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

132

P0735 5GR INCORRECT RATIO . . . . . .

133

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

133

On Board Diagnosis Logic . . . . . . . . .

133

Possible Cause . . . . . . . . . . . . . .

133

DTC Confirmation Procedure . . . . . . . .

133

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

134

P0740 TORQUE CONVERTER . . . . . .

135

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

135

CONSULT Reference Value in Data Monitor
Mode . . . . . . . . . . . . . . . . . .

135

On Board Diagnosis Logic . . . . . . . . .

135

Possible Cause . . . . . . . . . . . . . .

135

DTC Confirmation Procedure . . . . . . . .

135

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

135

P0744 TORQUE CONVERTER . . . . . .

137

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

137

CONSULT Reference Value in Data Monitor
Mode . . . . . . . . . . . . . . . . . .

137

On Board Diagnosis Logic . . . . . . . . .

137

Possible Cause . . . . . . . . . . . . . .

137

DTC Confirmation Procedure . . . . . . . .

137

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

137

P0745 PRESSURE CONTROL SOLENOID A ..

139

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

139

CONSULT Reference Value in Data Monitor
Mode . . . . . . . . . . . . . . . . . .

139

On Board Diagnosis Logic . . . . . . . . .

139

Possible Cause . . . . . . . . . . . . . .

139

DTC Confirmation Procedure . . . . . . . .

139

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

139

P1705 TP SENSOR . . . . . . . . . . ..

141

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

141

CONSULT Reference Value in Data Monitor
Mode . . . . . . . . . . . . . . . . . .

141

On Board Diagnosis Logic . . . . . . . . .

141

Possible Cause . . . . . . . . . . . . . .

141

DTC Confirmation Procedure . . . . . . . .

141

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

141

P1710 TRANSMISSION FLUID TEMPERA-
TURE SENSOR . . . . . . . . . . . ...

143

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

143

CONSULT Reference Value in Data Monitor
Mode . . . . . . . . . . . . . . . . . ..

143

On Board Diagnosis Logic . . . . . . . . . .

143

Possible Cause . . . . . . . . . . . . . ..

143

DTC Confirmation Procedure . . . . . . . .

143

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

144

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

145

P1721 VEHICLE SPEED SIGNAL . . . . ..

146

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

146

CONSULT Reference Value in Data Monitor
Mode . . . . . . . . . . . . . . . . . ..

146

On Board Diagnosis Logic . . . . . . . . . .

146

Possible Cause . . . . . . . . . . . . . ..

146

DTC Confirmation Procedure . . . . . . . .

146

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

146

P1730 INTERLOCK . . . . . . . . . .

148

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

148

On Board Diagnosis Logic . . . . . . . . . .

148

Possible Cause . . . . . . . . . . . . . ..

148

DTC Confirmation Procedure . . . . . . . .

148

Judgment of Interlock . . . . . . . . . . .

148

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

148

P1731 1ST ENGINE BRAKING . . . . . ..

150

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

150

CONSULT Reference Value in Data Monitor
Mode . . . . . . . . . . . . . . . . . ..

150

On Board Diagnosis Logic . . . . . . . . . .

150

Possible Cause . . . . . . . . . . . . . ..

150

DTC Confirmation Procedure . . . . . . . .

150

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

150

P1752 INPUT CLUTCH SOLENOID . . . ...

152

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

152

CONSULT Reference Value in Data Monitor
Mode . . . . . . . . . . . . . . . . . ..

152

On Board Diagnosis Logic . . . . . . . . . .

152

Possible Cause . . . . . . . . . . . . . ..

152

DTC Confirmation Procedure . . . . . . . .

152

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

152

P1757 FRONT BRAKE SOLENOID . . . ...

154

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

154

CONSULT Reference Value in Data Monitor
Mode . . . . . . . . . . . . . . . . . ..

154

On Board Diagnosis Logic . . . . . . . . . .

154

Possible Cause . . . . . . . . . . . . . ..

154

DTC Confirmation Procedure . . . . . . . .

154

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

154

P1762 DIRECT CLUTCH SOLENOID . . .

156

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

156

TM-4

CONSULT Reference Value in Data Monitor
Mode . . . . . . . . . . . . . . . . . ..

156

On Board Diagnosis Logic . . . . . . . . . .

156

Possible Cause . . . . . . . . . . . . . ..

156

DTC Confirmation Procedure . . . . . . . .

156

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

156

P1767 HIGH AND LOW REVERSE CLUTCH
SOLENOID . . . . . . . . . . . . . ...

158

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

158

CONSULT Reference Value in Data Monitor
Mode . . . . . . . . . . . . . . . . . ..

158

On Board Diagnosis Logic . . . . . . . . . .

158

Possible Cause . . . . . . . . . . . . . ..

158

DTC Confirmation Procedure . . . . . . . .

158

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

158

P1772 LOW COAST BRAKE SOLENOID . ..

160

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

160

CONSULT Reference Value in Data Monitor
Mode . . . . . . . . . . . . . . . . . ..

160

On Board Diagnosis Logic . . . . . . . . . .

160

Possible Cause . . . . . . . . . . . . . ..

160

DTC Confirmation Procedure . . . . . . . .

160

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

160

P1774 LOW COAST BRAKE SOLENOID . ..

162

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

162

CONSULT Reference Value in Data Monitor
Mode . . . . . . . . . . . . . . . . . ..

162

On Board Diagnosis Logic . . . . . . . . . .

162

Possible Cause . . . . . . . . . . . . . ..

162

DTC Confirmation Procedure . . . . . . . .

162

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

163

MAIN POWER SUPPLY AND GROUND CIR-
CUIT . . . . . . . . . . . . . . . . .

164

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

164

CLOSED THROTTLE POSITION AND WIDE
OPEN THROTTLE POSITION CIRCUIT . . .

166

CONSULT Reference Value in Data Monitor
Mode . . . . . . . . . . . . . . . . . ..

166

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

166

BRAKE SIGNAL CIRCUIT . . . . . . . ..

167

CONSULT Reference Value in Data Monitor
Mode . . . . . . . . . . . . . . . . . ..

167

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

167

A/T SHIFT LOCK SYSTEM . . . . . . . .

168

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

168

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

168

OVERDRIVE CONTROL SWITCH . . . . ..

170

CONSULT Reference Value in Data Monitor
Mode . . . . . . . . . . . . . . . . . ..

170

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

170

1ST POSITION SWITCH . . . . . . . . .

172

CONSULT Reference Value in Data Monitor
Mode . . . . . . . . . . . . . . . . . .

172

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

172

ECU DIAGNOSIS INFORMATION . . .

174

TCM . . . . . . . . . . . . . . . . ..

174

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

174

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

176

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

177

DTC No. Index . . . . . . . . . . . . . ..

177

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

179

A/T CONTROL SYSTEM . . . . . . . . ..

179

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

179

A/T SHIFT LOCK SYSTEM . . . . . . . ..

186

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

186

SYMPTOM DIAGNOSIS . . . . . . ...

188

SYSTEM SYMPTOM . . . . . . . . . .

188

Symptom Chart . . . . . . . . . . . . . .

188

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

210

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

210

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

210

Precaution for Work . . . . . . . . . . . ..

210

Precaution for On Board Diagnosis (OBD) System
of A/T and Engine . . . . . . . . . . . . .

210

Precaution . . . . . . . . . . . . . . . .

211

Service Notice or Precaution . . . . . . . .

212

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

213

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

213

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

213

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

214

PERIODIC MAINTENANCE . . . . . ..

215

A/T FLUID . . . . . . . . . . . . . . .

215

Checking the A/T Fluid (ATF) . . . . . . . ...

215

Changing the A/T Fluid (ATF) . . . . . . . ...

217

A/T Fluid Cooler Cleaning . . . . . . . . . .

218

INSPECTIONS BEFORE TROUBLE DIAG-
NOSIS . . . . . . . . . . . . . . . ...

221

Fluid Condition Check . . . . . . . . . . ...

221

Stall Test . . . . . . . . . . . . . . . ...

221

Line Pressure Test . . . . . . . . . . . .

222

ROAD TEST . . . . . . . . . . . . . .

225

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

225

Check Before Engine Is Started . . . . . . .

225

Check at Idle . . . . . . . . . . . . . . .

225

Cruise Test - Part 1 . . . . . . . . . . . ...

226

Cruise Test - Part 2 . . . . . . . . . . . ...

228

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