Chapter 2 Tow Tractor Model MA-38Section 5 Maintenance Manual

CD444-38M 2 - 5 -3July 2019 (Rev A)

5.1ElectricalSchematics

Figure2-5-1:MA-38StandardElectricalSchematic7188829_RevB(Page1of6)

118

80

12 VOLTBATTERY

93

G7

HORN

SWITCHHORN

NEUTRALRELAY

85

86

104

87

3090

SWITCHIGNITION

6

2

1

5

3 4

P19

(D27)

MASTERRELAY

87

30

86

85

(D10)

(D25)

80 REVERSERELAY

85

86

87

30

HORNRELAY

85

86

87

30

F6 15 AMP

F5 10 AMP

F3 15 AMP

F8 CIRCUIT BREAKER 15 AMP

F9 15 AMP

F7 15 AMP

F2 15 AMP

F1 CIRCUIT BREAKER 15 AMP

FUSE BOX

GROUND BUSBAR (D23)

12

11

10

98

7654321

-

117

93

N

93

IGN2

12

IGN

2

R

IGN15

117

HORN PWR

HORN PWR

HO

RN P

WR

HO

RN P

WR

HO

RN P

WR

HORN PWR

104

IGN3

103

IGN8

IGN8

103

13 SHEET 2

SHEET 6IGN1

114P SHEET 2

IGN4

IGN

7

112 SHEET 2IGN4

IGN11

IGN7 IGN7

IGN11 66 SHEET 4

115 115 SHEET 3

IGN10 IGN10

TCU BAT SHEET 3BA

T1

BAT1

BAT1

TCU IGN SHEET 3

IGN5

F4 15 AMP

113 113

IGN6

63

IGN9

P2

IGN

1

IGN2

SHEET 2

SP1114

P2

SP36

SHEET 5

MVP1

ECM

P266

114

P2

P2

P263

IGN1

IGN3

D27

P2

103

P2

IGN

15

G1 SHEET 3G2 SHEET 3G3 SHEET 2G4 SHEET 2G5 SHEET 3

G6 SHEET 4

G7

G7

G7

G7

G8 SHEET 4

G9 SHEET 3

P212

SHEET 213

(OPTION)

P2112

P2

NP2

P2

TCM BATP2

TCM IGNP2

POWERSTUD

ENGINESHEET 6

SHEET 6

R

G10 SHEET 2

ALL

IGN

WIR

ES

ALL IGN WIRES

SPL

SPL

HBAT

(HALL SYSTEM)SHEET 2

(BOTTOMOF STARTER)

NOT USED

NOT USED

ORHALL SYSTEM

(OPTION)

1, 2, 4, 5, AND 6ARE CONNECTED

DURING START

1, 3, 4, 5, AND 6ARE CONNECTEDDURING IGNITION

SHEET 6

SHEET 6

GROUNDSTUD

ENGINETO

1

11

14

13

10

12

6

7

5

8

32

4

15

9

SHT 3

SHT 3

SHEET 5

SHEET 5

SHT 6

TO STARTER

12

7

4

9

5 21

6

1122

20

14

28

26

30

16

18

24

8

3

10

12

19

13

27

25

29

15

17

23

CB

CB

CB

CB

CB

CB

CB

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2 - 5 -4 CD444-38MJuly 2019 (Rev A)

Tow Tractor Model MA-38 Chapter 2Maintenance Manual Section 5

Figure2-5-2:MA-38StandardElectricalSchematic7188829_RevB(Page2of6)

RIGHT FRONTHEAD LIGHT

LEFT FRONTHEAD LIGHT

PSWITCH

BRAKE LIGHTPRESSURE

BRAKE/TAIL LIGHTRIGHT REAR

BRAKE/TAIL LIGHTLEFT REAR

54

53

106

107

- +

SHIFTERBACK LIGHT

83

D5

D3

D5

D3

D8

D8

D7

D7

(D1)

-+

BRAKE WARNING PRESSURE SWITCH

10

BRAKE WARNING LIGHT

BRKWRN

BRKWRN

P

1

2

110

FUELSENDER

PRESSURE

P

SWITCHPRESSURE

TRANSMISSIONNO

(N.O.)

P25

1 2 3 4 5 6 1 2 3 4 5 6

P24

MVP1

MVP

1

CAN

H+

SHEET 3

CAN

L-

SHEET 3

G4

P88

FOOT

5+VD

C

5+VD

C1

5+VDC2

5+VD

C2

APS

2

APS2

APS

2

APS2

111

111

APS

1 SI

G

GN

D

GND

SP30

APS

1 G

ND

APS2 GND

APS

2 G

ND

84

114SHEET 1

SP2

RIGHTREV LIGHT

SP5LEFT

REV LIGHT

12

SHEET 1

OR(OPTION)

(OPTION)

(D11)

D7

D7

REVERSEALARM

D28

SP8

SP37

95

7189

84

101

83A

D7

HEADLIGHT SWITCH OPTIONS(D20)

THROTTLE

78

77

D7

G3

MVP DISPLAY

SP4

D7

D7

(SHEET 4)

(SHEET 4)

G6

G6

12

83D8

(TURN SIGNAL OPTION SHEET 4)

1

2

APS1

G6

95 G6

STD

(OPTION)

95

WIRED TO IGN)(HEADLIGHTSNO SWITCH

(OPTION)

BOTTOM OF PAGESEE OPTIONS

(D20)

(OPTION)

CN12A CN12B

NC

NC NC

(LOCATION: DASH)

G6

SHEET 4G6

G6 SHEET 4

G6 SHEET 4

12

12

120 OHMS

D

E

F

B

A

C

13

OR

95

WIRED TO IGN)(HEADLIGHTSNO SWITCH

(OPTION)

AND

89

101

71 89

101

71 89

101

71

+

-

BATT

ERY

STA

RT

IGN

/ACC

HALL 12V CONTROLLER

4-PIN TWIST LOCK CONNECTOR

GREEN ILLUMINATED PUSH BUTTON IGNITION

G10

OUT OF FUEL SIGNAL

2

3

1

4

5

6

GRA

Y

RED

BLU

E

GLOW PLUG SIGNAL

ORANGE

BLACK

PURPLE

SHEET 1

NOT USED NOT USED

CONNECT TO P19

(OPTION)

P31P5

P31P5

NORMAL OPERATION:LOW FUEL(240 OHMS)-HIGH FUEL(33 OHMS)APS1 MIN(0.9V)-MAX(3.6V)APS2 MIN(0.5V)-MAX(1.7V)

1

1

2

2

4

5

9

9

2

1

12

74

3

6

1

2

SHT 1

SHT 4

SHT 1

SHT 1

SHT 1

SHT 4

SP31

SP28

Propert

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Chapter 2 Tow Tractor Model MA-38Section 5 Maintenance Manual

CD444-38M 2 - 5 -5July 2019 (Rev A)

Figure2-5-3:MA-38StandardElectricalSchematic7188829_RevB(Page3of6)

1

18 A

WG

YEL

+12

V

3

20 A

WG

BLK

GN

D

4 8 2

GRY

/ORN

SIG

NA

L BE

LT U

P SE

NSO

R

7

7

BRN

/BLK

SIG

NA

L

29

5

8

S5

123 4

18 A

WG

YEL

+12

V

20 A

WG

BLK

GN

D

20 A

WG

BLK

GN

D

S6

GRY

/YEL

SIG

NA

L

20 A

WG

BLK

GN

D

PC5ATH

MHTH

WH

T/RE

D C

AN

1 H

TWISTEDPAIR

18 AWG BLK GROUND

6

18 A

WG

YEL

+12

V

TCU

TWISTEDPAIR

TWISTEDPAIR

TWISTEDPAIR

WH

T/BL

K CA

N1-

LTWISTED

PAIRTWISTED

PAIR

WHT/BLK CAN1-L

WHT/RED CAN1 H

18 AWG YEL +12V

4L70E 2010 SPECIAL TRANSMISSION (INCHING) TCU MODULE 2800

C6 PC5A

C5C61C8 2 3 4 5 6 7 8

YEL/

RED

AN

A IN

2

YEL/

LT.G

RN A

NA

IN 3

YEL/

LT.B

LU A

NA

IN 4

YEL/

WH

T A

NA

IN 5

VIO

/WH

Y PW

M 5

VIO

/ORN

PW

M 6

PNK/

WH

T D

IG O

UT

5

PNK/

ORN

DIG

OU

T 6

1C7 2 3 4 5 6 7 8

46 47 48 49 51 52 55 56 10 30 31 32 33 34 35 36

GRY

/PN

K D

IG IN

8

BRN

/RED

DIG

IN 1

0

BRN

/LT.

BRN

DIG

IN 1

1

BRN

/LT.

BLU

DIG

IN 1

2

BRN

/WH

T D

IG IN

13

BRN

/ORG

DIG

IN 1

4

BRN

/YEL

DIG

IN 1

5

BRN

/PN

K D

IG IN

16

92

17 G2

V-

V+

SIG

PX

1 2 34

NO

T U

SED

P30

90

PX

PARK BRAKEPROXIMITY SENSOR

(PNP)+12V W/ BRAKEDISENGAGED

G2

NO

TU

SED

NO

TU

SED

NO

TU

SED

NO

TU

SED

NO

TU

SED

NO

TU

SED

SWITCH

SHIFT

PRESSUREP

G5

INHIBIT

(D2)

BRAKE

NO

TU

SED

ENABLESHIFT

LIGHT

18

SPL 34

(INDICATES SHIFTING ABILITY)

(SEL)

1

2

17

17115SHEET 1

NSHEET 1

RSHEET 1

NO

TU

SED

NO

TU

SED

NO

TU

SED

NO

TU

SED

NO

TU

SED

NO

TU

SED

NO

TU

SED

BAC5

CAN INTERFACE DIAGNOSTIC PLUG

CA

N H

I +

CAN

LO

W -

SHIE

LD G

ND

G9

C

SP 22

SP 23

CANL-

CAN

H+

CANL-

CAN

L-

(LOCATION: LH RAIL FRAME)

SHEET 4

SHEET 4CANH+ CANH+SHEET 2

SHEET 2

CAN

H+

CAN

L-

SHEET 4

SHEET 4

SHEET 4

SHEET 4

MAIN HRN

SHT 1

SHT 1

SHT 1

SHT 5 SHT 5

Propert

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2 - 5 -6 CD444-38MJuly 2019 (Rev A)

Tow Tractor Model MA-38 Chapter 2Maintenance Manual Section 5

Figure2-5-4:MA-38StandardElectricalSchematic7188829_RevB(Page4of6)

8

WH

T/RE

D C

AN

1 H

S3

15

12

42

S2

18 A

WG

BLK

GRO

UN

D

GRY

/WH

T D

I-5

PNK/

LT G

RN C

K TR

AN

S LT

40

5

1P3

11

TCU

IGN

TCU

IGN

YEL

12VO

LTS

IGN

10

20

RED

+12

V BA

TTTC

U B

AT

2 3

ORG

/BLK

TACH

IN

G1

1

WH

T/BL

K CA

N1-

L

16

S4

7

6

MAIN HRN

TRANS

24

TCU BAT

TCU IGN

C4

ORG

+5V

SEN

S

21 45

WH

T TP

S SI

G

BLK

SIG

GN

D

9 46

DHMH

C4A

OUTPUTSHAFTSPEED

SENSOR

B

ORG

/RED

TO

SS +

BLK/

WH

T SE

NSO

R G

ND

2523

AC3

OPTIONALCOM

NOT REQUIREDFOR USE

B

RED

SER

IAL

RX

WH

T RS

232

GN

D

2728

C

BLK

SERI

AL

TX

26

C2

53

A

4L70E TRANSMISSION (INCHING)

B

PWM

8-PN

K/RE

D-S

HIF

T SO

L B

PWM

7-PN

K/BL

K-SH

IFT

SOL

A

C

18 A

WG

-YEL

-LIIN

E PR

ESS

+

PWM

1-VI

O/B

LK-L

INE

PRES

S -

E

18 A

WG

-YEL

-PO

WER

F

DN

1-G

RY/B

LK-IM

S A

G

DN

2-G

RY/R

ED-IM

S C

H

DN

3-G

RY/L

T G

RN-IM

S B

JK L

DN

4-G

RY/L

T BL

U-IM

S P

ORN

/LT

GRN

-TU

RB S

PEED

+

AD

6-YE

L/O

RN-T

FT

M R S T

BLK/

WH

T-SE

NSO

R G

ND

VIO

/LT

GRN

-FW

D-C

L

VIO

/BLU

-REV

-CL

VIO

/WH

T-TC

C O

N/O

FF

VIO

/RED

-TCC

PW

M P

RESS

U

1119 2 3 4 538 50 9 13 14 41 12BL

K/W

HT-

IMS

GN

D

BLK/

WH

T TU

RBO

SPE

ED -

37

NV

S7

S1

54 18

DP W

4L70E TRANSMISSION (INCHING) TCU MODULE 2800

TWISTEDPAIR

TWISTEDPAIR

C1

YEL 12VOLTS IGN

18 AWG YEL +12V

BLK SIG GND

CANL-

CANH+

18 AWG YEL +12V

BLK SIG GND

CAN1-H

CAN1-L

GND

+12V

NO

TU

SED N

OT

USE

D

NO

TU

SED

NO

TU

SED

NO

TU

SED

NO

TU

SED

NO

TU

SED

SHEET 1

SHEET 1

SHEET 1

APS

1 SI

G

APS1 SIGSHEET 2

SHEET 3

SHEET 3

SHEET 3

SHEET 3

SHEET 3

SHEET 3

NO

TU

SED

Propert

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Chapter 2 Tow Tractor Model MA-38Section 5 Maintenance Manual

CD444-38M 2 - 5 -7July 2019 (Rev A)

Figure2-5-5:MA-38StandardElectricalSchematic7188829_RevB(Page5of6)

FRONTWIPERMOTOR

FRONTWIPER

SWITCH

66W

HT

BLK

62 G8

CABHEATERMOTOR

M

M

6365

HEATERSWITCH

SWITCH

DOMELIGHT

DOMELIGHT

D7

(D17)

113SHEET 1

LED LIGHTBEACON

FLASHING/

LT20

FLASHUNIT

YEL

BEACONPROGRAMING

WIRE

+

-

ROTATING

63SHEET 1

HL

M FANVENTILATION

(OPTION)

CAB

M4

G8

68

C

WORKLIGHTSWITCH(D29)

116

OPTION

+

-WORKLIGHT

8383

54

56

53

5451

+

PILOT LT

CONTROL SWITCHTURN SIGNAL

83

58

-52

51

53

LEFT FRONTTURN LT

RIGHT FRONTTURN LT

5556

LED TURN

FLASHERSIGNAL

XL

1N5406DIODE

1N5406DIODE

SHEET 2

SHEET 2

SP6

(D8)

OPTIONAL LED TURN SIGNAL CONTROLLER WIRING

(D6)

RIGHT REARTURN LT

(D7)

55A

SP 7

55

(D4)

10

LEFT REARTURN LT

(D7)

56A11

83SHEET 2

D7

D7

G6

SHEET 2

SHEET 2

SP3

G6

SHEET 1 G6

SHEET 2

G6

G6

G6

G6

G6

G6

G6

G6

(D9)

1

7

5

4

3

1

2

12

2

58

58

58

(D26)

(D21)

6

8 G6

CAB HRN

MAIN HRN

(OPTION)

(OPTION)

+

-

MAIN HRN

CAB HRN

G6

G6

63

113

G6

68

5

9

9

9

SHT 1SHT 1SP35

Propert

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2 - 5 -8 CD444-38MJuly 2019 (Rev A)

Tow Tractor Model MA-38 Chapter 2Maintenance Manual Section 5

Figure2-5-6:MA-38StandardElectricalSchematic7188829_RevB(Page6of6)

ENGINE VIC1

(RED) 109

PUMPFUEL

M (WHT) 108

(P1)

117SHEET 1

ECMSHEET 1

ALL SWITCHES, RELAYS SHOWN IN DE-ENERGIZED POSITIONSALL SWITCHES, RELAYS SHOWN IN DE-ENERGIZED POSITIONS

C

D

F

A

P

N

(D30)

SHEET 3

SHEET 3

CANL-

CANH+

MANIFOLD

FUELPRESSURE

(TO ENGINE POWER STUD)

(TO ENGINE POWER STUD)

+ -

TWISTED PAIR

R

E

G

H

B

L

J

S

M

K

NOT USED

NOT USED

NOT USED

NOT USED

NOT USED

NOT USED

NOT USED

NOT USED

NOT USED

NOT USED

NOT USEDNOT USEDNOT USED

NOT USEDNOT USED

NOT USED

NOT USED

NOT USED

NOT USED

NOT USEDNOT USEDNOT USED

NOT USED

ENGINE HARNESS

NOT USED

ALL FUSES AND RELAYS LOCATED IN ENGINE FUSEBOX ON SHEET 1

1 2

2 1

SHEET 1

GROUNDSTUD

ENGINE

SHEET 1(TO BATTERY GROUND)

(TO BATTERY GROUND)

SHT 1

SHT 1

SPK_COIL1A

SPK_COIL2B

SPK_COIL2A

SPK_COIL1B

INJ1_LS

INJ4_LS

INJ2_LS

INJ3_LS

KNK1-

KNK1+

CAM-

CAM+

CRANK+

MAP

STARTER

AUX_PWM5 REC

DBW-

TPS1

AUX_ANA_PU3

DBW+

GOV1

EGOH_1

EGO2

EGOH_2

CAN1-

5V_EXT1

GND

ECT

OIL PRESS

AUX_ANA_PD2

AUX_PWM2

GND

5VRTN1

SPK_GND

AUX_ANA_PD1

CAN1+

SPEED+

AUX_DIG3

AUX_DIG2

TPS2

AUX_PWM5

SPEED-

EGO1

AUX_DIG4

AUX_ANA_PU2

IAT

AUX_PWM6

VSW

AUX_PWM3

RELAY

MIL

5V_RTN2

5V_EXT2

FPP1

AUX_ANA_PU1

AUX PWM3_REC

TACH

1 2

1 2

1 2

1 2

21

21

21

1 2

1 2

1 2

21

CRANK-

ABCD

1 2 3

4 5 6

A C

B D

B D

A C

1

1

Joint A

FPP2_IVS

VBAT

AUX PWM1

A

B

C

D

5A FUSE

30A FUSE

15A FUSE

15A FUSE

1

5

3

2

64

67

65

66

52

5126

25

27

28

23

36

82

80

48

47

21

62

22

61

14

15

19

20

35

37

38

13

53

31

54

32

87

74

79

73

90

44

78

89

72

83

84

43

85

39

40

42

34

50

41

29

30

12

469

81

ECM(2/2)

COIL_CYL_#1

COIL_CYL_#2

COIL_CYL_#3

COIL_CYL_#4

INJ_CYL_#1

INJ_CYL_#2

INJ_CYL_#3

INJ_CYL_#4

Joint A

Knock sensor

Crank sensor

Cam sensor

Joint CJoint D

TMAP(BOOST)

Joint CJoint D

Joint A

Joint DJoint A

Joint D

Throttle actuator

O2 sensorPost Catalyst

O2 sensorPre Catalyst

DIAG_TOOL Connector

CAN Tool

Coolant Temperature Sensor

Oil Switch

Joint C

Joint D

Joint A

Alternator

Starter

STARTER

Starter Relay

VSW

Fuel Pump Relay

FUEL PUMP

Power Relay

ECM

ECM(1/2)

Joint D

Joint C

2

Joint D

10A FUSE

Joint A

IGNITION

A

B

C

D

60A FUSE

Joint C

Joint D

50A FUSE

POWR_FMOLEX 19432-0013

POWR_MMOLEX 19433-0013

EFFECTIVE ON SERIALNUMBER 2023056

Propert

y of A

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