Infiniti G37 Coupe. Manual — part 832

LAN

LAN-1

ELECTRICAL & POWER CONTROL

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SECTION

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CONTENTS

LAN SYSTEM

CAN FUNDAMENTAL

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

6

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

6

Precautions for Trouble Diagnosis . . . . . . ....

6

Precautions for Harness Repair . . . . . . . ....

6

FUNCTION DIAGNOSIS . . . . . . . ...

7

CAN COMMUNICATION SYSTEM . . . . . .

7

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

7

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

7

CAN Communication Control Circuit . . . . . .....

8

DIAG ON CAN . . . . . . . . . . . . . .

9

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

9

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

9

TROUBLE DIAGNOSIS . . . . . . . . . .

10

Condition of Error Detection . . . . . . . . .

10

Symptom When Error Occurs in CAN Communi-
cation System . . . . . . . . . . . . . . ..

10

CAN Diagnosis with CONSULT-III . . . . . . ..

13

Self-Diagnosis . . . . . . . . . . . . . . .

13

CAN Diagnostic Support Monitor . . . . . . .

13

How to Use CAN Communication Signal Chart . ..

15

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

16

DIAGNOSIS AND REPAIR WORKFLOW . . .

16

Trouble Diagnosis Flow Chart . . . . . . . . .

16

Trouble Diagnosis Procedure . . . . . . . . ..

16

CAN

HOW TO USE THIS MANUAL . . . . . .

21

HOW TO USE THIS SECTION . . . . . . ...

21

Caution . . . . . . . . . . . . . . . . .

21

Abbreviation List . . . . . . . . . . . . . ..

21

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

22

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

22

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

22

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

22

Precautions for Trouble Diagnosis . . . . . . ..

22

Precautions for Harness Repair . . . . . . . ..

22

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

24

DIAGNOSIS AND REPAIR WORKFLOW . .

24

Interview Sheet . . . . . . . . . . . . . .

24

FUNCTION DIAGNOSIS . . . . . . . ..

25

CAN COMMUNICATION SYSTEM . . . . ...

25

CAN System Specification Chart . . . . . . . .

25

CAN Communication Signal Chart . . . . . . ..

25

COMPONENT DIAGNOSIS . . . . . . .

29

CAN COMMUNICATION SYSTEM . . . . ...

29

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

29

Wiring Diagram - CAN SYSTEM - . . . . . . ...

30

MALFUNCTION AREA CHART . . . . . .

36

Main Line . . . . . . . . . . . . . . . . .

36

Branch Line . . . . . . . . . . . . . . . .

36

Short Circuit . . . . . . . . . . . . . . . .

36

MAIN LINE BETWEEN BCM AND DLC CIR-
CUIT . . . . . . . . . . . . . . . . ..

37

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

37

MAIN LINE BETWEEN DLC AND ADP CIR-
CUIT . . . . . . . . . . . . . . . . ..

38

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

38

MAIN LINE BETWEEN ADP AND ABS CIR-
CUIT . . . . . . . . . . . . . . . . ..

39

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

39

ECM BRANCH LINE CIRCUIT . . . . . . .

41

LAN-2

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

41

A-BAG BRANCH LINE CIRCUIT . . . . . ..

42

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

42

AV BRANCH LINE CIRCUIT . . . . . . . .

43

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

43

BCM BRANCH LINE CIRCUIT . . . . . . ..

44

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

44

PSB BRANCH LINE CIRCUIT . . . . . . ...

45

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

45

TCM BRANCH LINE CIRCUIT . . . . . . ..

46

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

46

AFS BRANCH LINE CIRCUIT . . . . . . ...

47

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

47

DLC BRANCH LINE CIRCUIT . . . . . . ...

48

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

48

M&A BRANCH LINE CIRCUIT . . . . . . ..

49

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

49

STRG BRANCH LINE CIRCUIT . . . . . .

50

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

50

ADP BRANCH LINE CIRCUIT . . . . . . ..

51

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

51

RAS BRANCH LINE CIRCUIT . . . . . . ..

52

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

52

ABS BRANCH LINE CIRCUIT . . . . . . ..

53

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

53

ICC BRANCH LINE CIRCUIT . . . . . . .

54

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

54

IPDM-E BRANCH LINE CIRCUIT . . . . . .

55

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

55

CAN COMMUNICATION CIRCUIT . . . . .

56

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

56

CAN SYSTEM (TYPE 1)

COMPONENT DIAGNOSIS . . . . . .

58

MAIN LINE BETWEEN BCM AND DLC CIR-
CUIT . . . . . . . . . . . . . . . . ...

58

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

58

MAIN LINE BETWEEN DLC AND ADP CIR-
CUIT . . . . . . . . . . . . . . . . ...

59

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

59

MAIN LINE BETWEEN ADP AND ABS CIR-
CUIT . . . . . . . . . . . . . . . . ...

60

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

60

ECM BRANCH LINE CIRCUIT . . . . . . ..

62

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

62

A-BAG BRANCH LINE CIRCUIT . . . . . ..

63

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

63

AV BRANCH LINE CIRCUIT . . . . . . . .

64

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

64

BCM BRANCH LINE CIRCUIT . . . . . . ..

65

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

65

DLC BRANCH LINE CIRCUIT . . . . . . ..

66

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

66

M&A BRANCH LINE CIRCUIT . . . . . . ..

67

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

67

STRG BRANCH LINE CIRCUIT . . . . . .

68

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

68

ADP BRANCH LINE CIRCUIT . . . . . . ..

69

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

69

ABS BRANCH LINE CIRCUIT . . . . . . ..

70

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

70

IPDM-E BRANCH LINE CIRCUIT . . . . . .

71

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

71

CAN COMMUNICATION CIRCUIT . . . . ...

72

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

72

CAN SYSTEM (TYPE 2)

COMPONENT DIAGNOSIS . . . . . ...

74

MAIN LINE BETWEEN BCM AND DLC CIR-
CUIT . . . . . . . . . . . . . . . . ...

74

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

74

MAIN LINE BETWEEN DLC AND ADP CIR-
CUIT . . . . . . . . . . . . . . . . ...

75

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

75

MAIN LINE BETWEEN ADP AND ABS CIR-
CUIT . . . . . . . . . . . . . . . . ...

76

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

76

ECM BRANCH LINE CIRCUIT . . . . . . ..

78

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

78

A-BAG BRANCH LINE CIRCUIT . . . . . ..

79

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

79

AV BRANCH LINE CIRCUIT . . . . . . . .

80

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

80

BCM BRANCH LINE CIRCUIT . . . . . . ..

81

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

81

DLC BRANCH LINE CIRCUIT . . . . . . ..

82

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

82

M&A BRANCH LINE CIRCUIT . . . . . . ..

83

LAN

LAN-3

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

83

STRG BRANCH LINE CIRCUIT . . . . . . .

84

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

84

ADP BRANCH LINE CIRCUIT . . . . . . ...

85

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

85

RAS BRANCH LINE CIRCUIT . . . . . . ...

86

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

86

ABS BRANCH LINE CIRCUIT . . . . . . ...

87

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

87

IPDM-E BRANCH LINE CIRCUIT . . . . . ..

88

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

88

CAN COMMUNICATION CIRCUIT . . . . .

89

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

89

CAN SYSTEM (TYPE 3)

COMPONENT DIAGNOSIS . . . . . . .

91

MAIN LINE BETWEEN BCM AND DLC CIR-
CUIT . . . . . . . . . . . . . . . . .

91

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

91

MAIN LINE BETWEEN DLC AND ADP CIR-
CUIT . . . . . . . . . . . . . . . . .

92

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

92

MAIN LINE BETWEEN ADP AND ABS CIR-
CUIT . . . . . . . . . . . . . . . . .

93

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

93

ECM BRANCH LINE CIRCUIT . . . . . . ...

95

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

95

A-BAG BRANCH LINE CIRCUIT . . . . . ...

96

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

96

AV BRANCH LINE CIRCUIT . . . . . . . ..

97

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

97

BCM BRANCH LINE CIRCUIT . . . . . . ..

98

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

98

PSB BRANCH LINE CIRCUIT . . . . . . ...

99

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

99

AFS BRANCH LINE CIRCUIT . . . . . . .

100

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

100

DLC BRANCH LINE CIRCUIT . . . . . . .

101

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

101

M&A BRANCH LINE CIRCUIT . . . . . .

102

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

102

STRG BRANCH LINE CIRCUIT . . . . . ...

103

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

103

ADP BRANCH LINE CIRCUIT . . . . . . .

104

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

104

ABS BRANCH LINE CIRCUIT . . . . . .

105

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

105

ICC BRANCH LINE CIRCUIT . . . . . . .

106

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

106

IPDM-E BRANCH LINE CIRCUIT . . . . ...

107

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

107

CAN COMMUNICATION CIRCUIT . . . . .

108

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

108

CAN SYSTEM (TYPE 4)

COMPONENT DIAGNOSIS . . . . . ...

110

MAIN LINE BETWEEN BCM AND DLC CIR-
CUIT . . . . . . . . . . . . . . . .

110

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

110

MAIN LINE BETWEEN DLC AND ADP CIR-
CUIT . . . . . . . . . . . . . . . .

111

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

111

MAIN LINE BETWEEN ADP AND ABS CIR-
CUIT . . . . . . . . . . . . . . . .

112

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

112

ECM BRANCH LINE CIRCUIT . . . . . ...

114

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

114

A-BAG BRANCH LINE CIRCUIT . . . . .

115

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

115

AV BRANCH LINE CIRCUIT . . . . . . ..

116

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

116

BCM BRANCH LINE CIRCUIT . . . . . ...

117

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

117

PSB BRANCH LINE CIRCUIT . . . . . .

118

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

118

AFS BRANCH LINE CIRCUIT . . . . . .

119

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

119

DLC BRANCH LINE CIRCUIT . . . . . .

120

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

120

M&A BRANCH LINE CIRCUIT . . . . . ...

121

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

121

STRG BRANCH LINE CIRCUIT . . . . . .

122

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

122

ADP BRANCH LINE CIRCUIT . . . . . .

123

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

123

RAS BRANCH LINE CIRCUIT . . . . . .

124

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

124

ABS BRANCH LINE CIRCUIT . . . . . .

125

LAN-4

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

125

ICC BRANCH LINE CIRCUIT . . . . . . ..

126

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

126

IPDM-E BRANCH LINE CIRCUIT . . . . ...

127

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

127

CAN COMMUNICATION CIRCUIT . . . . ..

128

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

128

CAN SYSTEM (TYPE 5)

COMPONENT DIAGNOSIS . . . . . ...

130

MAIN LINE BETWEEN BCM AND DLC CIR-
CUIT . . . . . . . . . . . . . . . . .

130

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

130

MAIN LINE BETWEEN DLC AND ADP CIR-
CUIT . . . . . . . . . . . . . . . . .

131

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

131

MAIN LINE BETWEEN ADP AND ABS CIR-
CUIT . . . . . . . . . . . . . . . . .

132

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

132

ECM BRANCH LINE CIRCUIT . . . . . .

134

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

134

A-BAG BRANCH LINE CIRCUIT . . . . .

135

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

135

AV BRANCH LINE CIRCUIT . . . . . . ...

136

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

136

BCM BRANCH LINE CIRCUIT . . . . . .

137

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

137

TCM BRANCH LINE CIRCUIT . . . . . .

138

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

138

DLC BRANCH LINE CIRCUIT . . . . . . .

139

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

139

M&A BRANCH LINE CIRCUIT . . . . . .

140

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

140

STRG BRANCH LINE CIRCUIT . . . . . ..

141

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

141

ADP BRANCH LINE CIRCUIT . . . . . .

142

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

142

ABS BRANCH LINE CIRCUIT . . . . . .

143

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

143

IPDM-E BRANCH LINE CIRCUIT . . . . ...

144

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

144

CAN COMMUNICATION CIRCUIT . . . . ..

145

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

145

CAN SYSTEM (TYPE 6)

COMPONENT DIAGNOSIS . . . . . ..

147

MAIN LINE BETWEEN BCM AND DLC CIR-
CUIT . . . . . . . . . . . . . . . . ..

147

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

147

MAIN LINE BETWEEN DLC AND ADP CIR-
CUIT . . . . . . . . . . . . . . . . ..

148

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

148

MAIN LINE BETWEEN ADP AND ABS CIR-
CUIT . . . . . . . . . . . . . . . . ..

149

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

149

ECM BRANCH LINE CIRCUIT . . . . . . .

151

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

151

A-BAG BRANCH LINE CIRCUIT . . . . . .

152

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

152

AV BRANCH LINE CIRCUIT . . . . . . .

153

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

153

BCM BRANCH LINE CIRCUIT . . . . . . .

154

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

154

TCM BRANCH LINE CIRCUIT . . . . . . .

155

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

155

DLC BRANCH LINE CIRCUIT . . . . . . .

156

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

156

M&A BRANCH LINE CIRCUIT . . . . . . .

157

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

157

STRG BRANCH LINE CIRCUIT . . . . . ...

158

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

158

ADP BRANCH LINE CIRCUIT . . . . . . .

159

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

159

RAS BRANCH LINE CIRCUIT . . . . . . .

160

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

160

ABS BRANCH LINE CIRCUIT . . . . . . .

161

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

161

IPDM-E BRANCH LINE CIRCUIT . . . . .

162

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

162

CAN COMMUNICATION CIRCUIT . . . . ..

163

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

163

CAN SYSTEM (TYPE 7)

COMPONENT DIAGNOSIS . . . . . ..

165

MAIN LINE BETWEEN BCM AND DLC CIR-
CUIT . . . . . . . . . . . . . . . . ..

165

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

165

MAIN LINE BETWEEN DLC AND ADP CIR-
CUIT . . . . . . . . . . . . . . . . ..

166

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

166