Hummer H1 (2002+). Manual — part 57

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Transmission/Transfer Case 5-27

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05745159

Figure 5-27: Transmission Wiring Diagrams 6 of 6

Automatic
Transmission
Fluid
Pressure
Manual Valve
Position
Switch
(TFP)

Trans

Range C

Input

Trans

Range B

Input

Trans

Range A

Input

C34

P

R

N

D

E

C

Rev

Switch

Lo

Switch

D2

Switch

D3

Switch

D4

Switch

C32-S

C32-H

C32-K

764 PP

763 DB

762 OR

C29-B4

C29-B5

C29-B6

A / T ISS

High

A / T ISS

Low

Tw i s t e d

P a i r

B

C32-A

B

A

Auto Trans Input Shaft

Speed Sensor

A/T ISS

C27-D1

C27-D11

495 DB

496 GY

POWERTRAIN
CONTROL
MODULE
(PCM)

9-S12-071

5-28

Transmission/Transfer Case

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Connector Legend

76 WAY BULKHEAD LOCATION: LEFT SIDE FIREWALL

PIN

CKT

COLOR

CIRCUIT DESCRIPTION

1

400

LG

Ignition Feed +

2

739

PP

Left heated windshield power +

3

740

YL

Right heated windshield power +

4

43

DB

Trailer Brake activation

5

962

BR

Trailer lights

6

33

WH

neutral safety switch feed

7

37E

YL

start relay feed

8

37D

YL

Ignition switch feed

9

786

RD

Fuel selector valve control

10

537

OR

Battery

11

787

GY

Fuel pump + to selector valve

C1 MALE

9-S12-048

PIN 1

PIN 12

PIN 13

PIN 26

PIN 27

PIN 38

PIN 50

PIN 64

PIN 76

PIN39

PIN 51

PIN 65

C1 FEMALE

9-S12-047

CAV 1

CAV 13

CAV 27

CAV 39

CAV 51

CAV 65

CAV 12

CAV 26

CAV 38

CAV 50

CAV 64

CAV 76

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Transmission/Transfer Case 5-29

®

05745159

12

37

RD

Ignition relay feed

13

688

RD

Rear window defrost feed

14

723

YL

APP 3 5volt reference

15

724

DG

APP 3 signal

16

17

PP

+ From dimmer module

17

718

DB

APP 1 signal

18

353

YL

Speedometer signal

19

607

TN

ABS module diagnostic line

20

717

WH

APP 1 5-volt reference

21

961

PP

TT4 lamp activation

22

720

TN

APP 2 5-volt reference

23

640

OR

IGN+ CTIS warning circuits

24

92

GY

CTIS rear inflate solenoid activation

25

714

DB

Check throttle lamp activation

26

37

RD

Battery feed to interiror accessories

27

338

DB

Wait lamp activation

28

658

BR

Check engine lamp activation

29

151

GY

Cruise control ON/OFF signal

30

31

TN

Oil pressure signal

31

22

RD

Brake switch signal – rest

32

721

LB

APP 2 sensor signal

33

580

BR

Not Used for 99

34

606

OR

ABS diagnostic line

35

29

PK

Fuel guage signal

36

39

DG

Engine temperature signal

37

153

LG

Cruise resume/accelerate signal

38

42

BR

Low brake fluid lamp activation

39

198

TN

A/C request

40

810

PP

TCC brake switch signal

41

2

LG

Right front turn signal

42

152

DB

Cruise set/coast signal

43

298

BR

Backup light switch feed

44

722

PP

APP 2 ground

PIN

CKT

COLOR

CIRCUIT DESCRIPTION

5-30

Transmission/Transfer Case

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®

45

327

YL

Water-in-fuel lamp activation

46

80

WH

Underhood lamp power

47

3

LB

Left front turn signal

48

914

PP

PCM class 2 communication line to DLC

49

644

YL

Tachometer signal

50

210

DG

Low washer fluid level lamp activation

51

195

YL

Headlight switch feed

52

603

DG

ABS lamp activation

53

719

BR

APP 1 ground

54

793

YL

Low coolant lamp activation

55

794

RD

Low air warning lamp activation

56

41

TN

Brake fluid level sensor feed

57

428

PK

CTIS buzzer activation

58

47

LG

Deflate solenoid activation

59

46

WH

CTIS compressor relay activation

60

725

GY

APP 3 Ground

61

767

BR

Compass mirror temperature signal

62

1

DB

Horn relay activation

63

91

TN

CTIS front inflate solenoid activation

64

37

RD

Batt feed to interior fuse box

65

12

OR

Headlamp high beam feed

66

13

TN

Headlamp low beam feed

67

38

RD

Headlamp switch feed

68

16

LG

Ignition supply to exterior fuse box fuses 2A, 2B, and 3B

69

175

LB

Power window relay feed

70

943

BR

Upper windshield washer pump activation

71

5

DG

Right rear turn signal

72

9

YL

Left rear turn signal

73

20

RD

Front park lamps

74

21

GY

Rear tail lamp feed

75

789

BR

Fuel selector valve control

76

941

TN

Lower windshield washer pump activation

PIN

CKT

COLOR

CIRCUIT DESCRIPTION