Fault Code Isolation Procedure Index

Fault Code

SPN

FMI

Description

1

520225

0, 6, 15

Motor/Generator Current Sensor

2

520226

3

Motor/Generator Temperature Sensor

3

520227

0

Motor/Generator Temperature

4

520228

0, 2, 21–27

Motor/Generator Rotation Speed Sensor

5

520229

21–29

Motor/Generator AC Cable

6

629

13

No ECU Operation (HCM)

7

629

13

Improper ECU Configuration (HCM)

8

158

4

Loss of Switched Ignition Power Fault (HCM)

9

168

14

Weak Battery Voltage (HCM)

10

168

4

Low Battery Voltage (HCM)

11

629

12

No ECU Operation (TECU)

12

629

13

Improper ECU Configuration (TECU)

14

751

2, 3, 4

Invalid Shifter Range

16

625

2

High Integrity Link (HIL)

17

626

3, 4

Start Enable Relay

18

520200

2, 9

ECA Communication

19

520273

2, 9

CAN ECA Message

22

563

2, 9, 14

J1939 ABS Message (HCM)

24

525

9

J1939 HCM Message (TECU)

26

522

10

Clutch Slip

27

788

7, 14

Clutch Disengagement

32

43

2

Loss of Switched Ignition Power (TECU)

33

168

4

Low Battery Voltage (TECU)

34

168

14

Weak Battery Voltage (TECU)

35

639

2

J1939 Communication Link

36

639

14

J1939 Engine Message (TECU)

37

610

5

Power Supply (TECU)

38

520243

3, 4, 5, 14

Battery Fan Relay

39

520247

3, 4, 5

Heat Exchanger Relay

40

520248

3, 4, 5, 14

Cooling Pump Relay

48

523

2, 9

J1939 Transmission Message (HCM)

49

190

2, 9

J1939 Engine Message (HCM)

50

701

2, 9

J1939 Body Controller Message (HCM)

51

60

2, 3, 4, 10

Rail Position Sensor

52

59

2, 3, 4

Gear Position Sensor

53

520244

12, 14

DC/DC Converter

54

520245

2, 4

DC/DC Converter Output Voltage

Fault Code

SPN

FMI

Description

56

161

2, 3, 4, 5,

10

Input Shaft Speed Sensor

58

191

2, 3, 4, 5

Output Shaft Speed Sensor

59

639

2, 9

J1939 Communication Link (HCM)

60

625

2, 9

CAN Communication Link (HCM)

61

772

5, 6

Rail Select Motor

63

773

5, 6

Gear Select Motor

64

788, 520198,

520199, 524035

0, 12, 13,

21–28

ECA

65

520203

2, 5

ECA Speed Sensor

66

520271

3, 4, 14

ECA Battery Voltage

67

520274

3, 4, 5

ECA Ignition Voltage

68

520231

12, 13, 14

Grade Sensor

70

188, 518, 539, 544

0, 1, 2, 7

Engine Failed to Respond (HCM)

71

520275

7

Failed to Disengage Gear

72

520277

7

Failed to Select Rail

73

520278

7

Failed to Engage Gear

74

93, 190

7

Engine Failed to Respond (TECU)

75*

520276

14

Power Down In Gear

76

520250

3, 4, 16, 18

High-Voltage Battery 1 Potential Voltage

78

520232

6

High-Voltage Battery 1 Current

82

520233

0, 16

High-Voltage Battery 1 Temperature

83

751

12, 13

Invalid Shifter Range

84

751

13

Shift Control Device Not Configured

85

639

12

Shift Control Device Incompatible

88

520223

2, 9

Inverter CAN Message (HCM)

89

520234

2, 9

PECCAN Message (HCM)

94

520237

9

Transfer Case Message

95

520249

3, 4

12-volt Cranking Relay

97

3460

3, 4, 5, 7,

14

PTOEngagement

101

520238

0, 22–31

High-Voltage Battery

103

520265

22–26

Battery Control Unit Communication

105

520240

22–30

Battery Control Unit

107

520242

1

High-Voltage Battery Leak Detection

108

520268

3, 4

Battery Control Unit Power Supply

110

520220

21–29

Inverter

111

520260

12–28

Inverter Communication

112

520221

3, 4

Inverter Voltage

Fault Code

SPN

FMI

Description

113

520222

6, 14

Inverter Current

114

520261

3, 4

Inverter Power Supply

115

520223

0

Inverter Temperature

116

521210, 521211,

521212

3, 4, 5

High-Voltage Relays

116

520224

10, 14, 20

High-Voltage Relays

117

520251

3, 14, 29

PEC Relay Cut Request

118

520252

3, 4, 5

Auxiliary High-Voltage Relay Control Circuit

120

520275

3, 4

APGUnit 1 - AC Voltage

122

520277

6, 14, 15

APGUnit 1 - Output

123

520278

3, 4

APG Unit 1 - High Voltage Battery

125

520280

0

APG Unit 1 - Over Temperature

126

520281

25, 26, 27

APG Unit - Configuration

127

520282

0

APGUnit 1 - AmbientAir Over Temperature

128

520283

9

APGUnit 1 - CAN

165

520320

2

APG Unit 1 -Configuration Error