Isuzu N-Series. Service manual - part 742

 Engine Control System (4JH1)    6E-19

62

LT GRN/ BLK

Exhaust Brake Cut Signal Output 
to EHCU (ABS Module)

63

—

Not Used

64

LT GRN/ BLU Exhaust Brake Switch Signal

65

WHT/BLK

Brake Pedal 2 Switch Signal

66

—

Not Used

67

—

Not Used

68

YEL/GRN

VSS Signal

69

GRN/BLK

Idle Switch Signal

70

—

Not Used

71

—

Not Used

72

—

Not Used

73

—

Not Used

77

—

Not Used

78

—

Not Used

79

—

Not Used

80

—

Not Used

81

—

Not Used

Connector No.

B-234

Connector Color

Black

Test Adapter No.

J-35616-4A (Pin 1 – 5)

J-35616-64A (Pin 6 – 81)

Pin

Wire Color

Pin Function

121

120

119

113

105

97

89

112

104

96

88

111

103

95

87

110

102

94

86

109

101

93

85

108

100

92

84

107

99

91

83

106

98

90

82

116

115

114

118

117

N6A3798E

Connector No.

B-233

Connector Color

Black

Test Adapter No.

J-35616-64A

Pin

Wire Color

Pin Function

82

—

Not Used

83

WHT/RED

MAF Sensor 5 Volts Reference

84

BLK/BLU

IAT Sensor Signal

85

—

Not Used

Connector No.

B-233

Connector Color

Black

Test Adapter No.

J-35616-64A

Pin

Wire Color

Pin Function

6E-20    Engine Control System (4JH1) 

Engine Controls Connector End Views

Accelerator Pedal Position (APP) Sensor

Brake Switch

86

—

Not Used

87

BLK/WHT

Neutral Switch Input

88

GRN/RED

MAF Sensor Signal

89

GRY

ECT Sensor Signal

90

RED

CKP Sensor Signal

91

PNK

CKP Sensor Signal Output

92

BLK/RED

MAF Sensor & IAT Sensor Low 
Reference

93

BLK/PNK

ECT Sensor  Low Reference

94

BLK/RED

Glow Relay Control

95

LT GRN/ 

WHT

Intake Throttle Solenoid Control

96

—

Not Used

97

BLK/ORN

EGR Solenoid Valve Control

98

WHT

CKP Sensor Low Reference

99

BLU

CAN Low Signal

100

YEL

CAN High Signal

101

BLK

CKP Sensor Shield Ground

102

—

Not Used

102

—

Not Used

103

—

Not Used

105

ORN

Engine Shutoff (ESO) Solenoid 
Valve Control Signal Output

106-121

—

Not Used

Connector No.

B-233

Connector Color

Black

Test Adapter No.

J-35616-64A

Pin

Wire Color

Pin Function

Connector No.

B-80

Connector Color

Gray

Test Adapter No.

J-35616-33

Pin

Wire Color

Pin Function

1

BLK/GRN

APP Sensor Low Reference

2

GRN/ORN

APP Sensor Signal

3

RED/GRN

APP Sensor 5 Volts Reference

N6A3799E

1

2

3

2

3

4

1

N6A3800E

 Engine Control System (4JH1)    6E-21

Crankshaft Position (CKP) Sensor

Clutch Switch

Data Link Connector (DLC)

Connector No.

B-66

Connector Color

Brown

Test Adapter No.

J-35616-42

Pin

Wire Color

Pin Function

1

GRN/YEL

Brake Pedal 1 Switch (Stoplamp 
Pedal Switch) 12 Volts Feed

2

BLU/RED

Brake Pedal 2 Switch Ignition 
Voltage

3

WHT/BLK

Brake Pedal 2 Switch Signal

4

GRN

Brake Pedal 1 Switch (Stoplamp 
Pedal Switch) Signal

Connector No.

J-183

Connector Color

Black

Test Adapter No.

J-35616-4A

Pin

Wire Color

Pin Function

1

WHT

 CKP Sensor Low Reference

2

RED

CKP Sensor Signal

3

BLK

CKP Sensor Shield Ground

N6A3801E

1

2

3

Connector No.

B-89

Connector Color

White

Test Adapter No.

J-35616-42

Pin

Wire Color

Pin Function

1

BLU/RED

Clutch Pedal Switch Ignition 
Voltage

2

YEL

Clutch Pedal Switch Signal

Connector No.

B-79

Connector Color

Black

Test Adapter No.

J-35616-2A

Pin

Wire Color

Pin Function

1

—

Not Used

2

WHT/BLK

J1850 (Class 2)

1

2

N6A3802E

8

7

6

5

4

3

2

1

16

15

14

13

12

11

10

9

N6A3803E

6E-22    Engine Control System (4JH1) 

EGR Solenoid Valve

Engine Coolant Temperature (ECT) Sensor

Engine Warm Up Switch

3

—

Not Used

4

BLK

Ground

5

BLK

Ground

6

BLU

Diagnostic Request Switch 
(ECM)

7

YEL/BLU

Keyword 2000

8

—

Not Used

9

—

Not Used

10

—

Not Used

11

—

Not Used

12

WHT/GRN

Diagnostic Request Switch 
(EHCU [ABS Module])

13

—

Not Used

14

—

Not Used

15

—

Not Used

16

BLK/YEL

Power Supply

Connector No.

J-105

Connector Color

Black

Test Adapter No.

J-35616-4A

Pin

Wire Color

Pin Function

1

BLU/RED

Solenoid Valve 12 Volts Feed

2

BLK/ORN

Solenoid Valve Control

Connector No.

B-79

Connector Color

Black

Test Adapter No.

J-35616-2A

Pin

Wire Color

Pin Function

1

2

N6A3804E

Connector No.

E-16

Connector Color

Gray

Test Adapter No.

J-35616-4A

Pin

Wire Color

Pin Function

1

GRY

ECT Sensor Signal

2

BLK/PNK

ECT Sensor Low Reference

Connector No.

B-31

Connector Color

Gray

Test Adapter No.

J-35616-42

Pin

Wire Color

Pin Function

1

BRN

Indicator Lamp Control

2

GRN/RED

Illumination Lamp 12V Feed

1 2

N6A3805E

1

2

3

4

5

6

N6A3806E