Hummer H1 (2002+). Manual - part 121

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 Brake System  7-43

®

05745159

Figure 7-47:   ABS/TT4 Main System Diagram.

609 YL

RIGHT
REAR

994 BR

995 BK

C2-23

C2-22

16

33

WHEEL

SPEED

SENSOR

LEFT
REAR

992 BR

993 BK

C2-32

C2-31

18

35

WHEEL

SPEED

SENSOR

RIGHT
FRONT

998 BR

999 BK

C2-19

C2-20

17

34

WHEEL

SPEED

SENSOR

970 TN

971 PP

972 YL

973 OR

974 DB

975 LB

976 RD

977 WH

978 BK

677 GY

1

2

10

11

13

12

5

4

6

9

OUTLET V

A

L

V

E

LF

INLET V

A

L

V

E

OUTLET V

A

L

V

E

RF

INLET V

A

L

V

E

OUTLET V

A

L

V

E

LR

INLET V

A

L

V

E

OUTLET V

A

L

V

E

RR

INLET V

A

L

V

E

REF GROUND

SHUTTLE

VA

LV

E

SWITCH

G1

58 BK

PUMP

 RELA

Y

 1

G2

PUMP MOTOR

PUMP

 RELA

Y

 2

605 PP

610 RD

58 BK

MAXI FUSE

40A 7M

EXTERIOR
FUSE BOX

TO

BATTERY

LEFT
FRONT

996 BR

997 BK

C2-11

C2-10

15

32

WHEEL

SPEED

SENSOR

B

A

M

WSS LOW

WSS HIGH

WSS LOW

WSS HIGH

WSS LOW

WSS HIGH

24

23

7

6

22

21

5

4

31

MOTOR

MONITOR

11

30

12

WSS LOW

WSS HIGH

25

9-S07-001

C7

C7

C11

MODULATOR

ECU

7-44

Brake System

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®

Figure 7-48:   ABS/TT4 Power, Ground and Warning Lamp Circuit.

58

BLK

DLC

C1-19

C1-34

7

15

606 OR

607 TN

13

14

DIAGNOSTIC

ABS
ECU

IGN

FUSE

2B

5 AMP

Exterior

Fuse

Box

9

601 PK

TO IGNITION

SWITCH

19

8

990 PK

991 LB

990 PK

ABS
VALVE
RELAY

G2

575 OR

FUSE IC

25 AMP

Exterior

Fuse

Box

ABS
WARNING
RELAY

58BK

G2

G2

58 BK

603 RD

ABS W

ARNING

C1-52

C3-E2

ABS WARNING
LAMP

TO GUAGES

FUSE

C1-21

961 PP

C3-D3

ATC INFORMATION
LAMP

TO GUAGES

FUSE

1

26

3

TO

BATTERY

9-S07-002

27

570 BK

G2

C9-C

C10-E

STATUS

CENTER

RH

STATUS

CENTER

LH

____________________________________________________________

 Brake System  7-45

®

05745159

Figure 7-49:   35 Pin ECU Connector Female Half 

PIN

CKT

COLOR

DESCRIPTION

1

990

PK

ABS valve relay input

3

961

PP

TT4 lamp activation

4

977

WH

Right rear inlet valve activation

5

976

RD

Right rear outlet valve activation

6

973

OR

Right front inlet valve activation

7

972

YL

Right front outlet valve activation

8

991

LB

ABS valve relay activation

9

601

PK

Ignition feed

11

605

PP

Positive pump relay activation

12

610

RD

Negative pump relay activation

13

606

OR

Diagnostic line

14

607

TN

Diagnostic line

15

997

BK

Left front wheel speed sensor low

16

995

BK

Right rear wheel speed sensor low

17

999

BK

Right front wheel speed sensor low

18

993

BK

Left rear wheel speed sensor low

19

990

PK

ABS valve relay redundant input

21

975

LB

Left rear inlet valve activation

22

974

DB

Left rear outlet valve activation

23

971

PP

Left front inlet valve activation

24

970

TN

Left front outlet valve activation

C7 FEMALE ONLY

9-S12-043

D1

D2

D3

D4

D5

D6

D7

D8

D9 D10 D11 D12 D13 D14 D15 D16 D17 D18

D19 D20 D21 D22 D23 D24 D25 D26 D27 D28 D29 D30 D31 D32 D33 D34 D35

7-46

Brake System

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®

Figure 7-50:   13 Pin Modulator Connector Female Half

25

677

GY

Shuttle valve switch signal

26

603

DG

ABS warning lamp activation

27

570

BK

Ground

30

609

YL

Pump motor monitor

31

978

BK

Reference ground

32

996

BR

Left front wheel speed sensor high

33

994

BR

Right rear wheel speed sensor high

34

998

BR

Right front wheel speed sensor high

35

992

BR

Left rear wheel speed sensor high

PIN

CKT

COLOR

DESCRIPTION

PIN

CKT

COLOR

DESCRIPTION

1

970

TN

Left front outlet valve activation

2

971

PP

Left front inlet valve activation

4

977

WH

Right rear inlet valve activation

5

976

RD

Right rear outlet valve activation

6

978

BK

Reference ground

9

677

GY

Shuttle valve switch signal

10

972

YL

Right front outlet valve activation

11

973

OR

Right front inlet valve activation

12

975

LB

Left rear inlet valve activation

13

974

DB

Left rear outlet valve activation

9-S12-014

C11 FEMALE ONLY

CAV 1

CAV 6

CAV 10

CAV 5

CAV 9 

CAV 13