mxt magna mp1528 transfer case

7/30/2019 MXT Magna MP1528 Transfer Case

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SERVICE MANUAL

SERVICE MANUAL SECTION

MXT Magna MP1528 Transfer Case - Service and Electrical

Troubleshooting

Model: MXT

S13038

11/08/2007

S13038

Copyright 11/08/2007 International Truck and Engine Corporation


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MXT Magna MP1528 Transfer Case - Service and Electrical Troubleshooting 1

1. DESCRIPTION

NOTICE

The information supplied herein has been furnished by the manufacturer an/or the supplier for use

with its product. International Truck and Engine Corporation reprints this information based onrepresentations made to the Company by the manufacturer and/or supplier and is not responsible for

any errors or mishaps resulting from such errors or from any misuse of the product. Every user is

urged to carefully follow the instructions which accompany the product.

Supplier drawings for the special tools that may be required for servicing the transfer case are after the Service

Procedures part of this document. These tool drawings may be used for local sourcing/fabrication as required.

International Truck and Engine Corporation also may have available a set of these tools for loan to individual

dealers. Contact the Service Tools Department by e-mail at [email protected] for information.

S13038


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M a g n a P o w e r t r a i n U S A , I n c . N e w P r o c e s s G e a r

M P 1 5 2 8 S e r v i c e I n s t r u c t i o n s P a g e 1 o f 3 6

M a g n a P o w e r t r a i n U S A , I n c .N e w P r o c e s s G e a r , I n c .

6 6 0 0 N e w V e n t u r e G e a r D r i v eE . S y r a c u s e , N e w Y o r k 1 3 0 5 7 U S A

w w w . m a g n a p o w e r t r a i n . c o m

International MXTMP1528 T rans fe r Case Serv ice Procedures


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TABLE OF CONTENTS

S E C T I O N

1 . T R A N S F E R C A S E I D E N T I F I C A T I O N T A G S U M M A R Y

2 . S U M M A R Y O F S E R V I C A B L E C O M P O N E N T S

3 . T R A N S F E R C A S E S E R V I C E P R O C E D U R E S

A . 1 I n p u t F l a n g e R e m o v a l

A . 2 I n p u t S e a l S l i n g e r R e m o v a l

A . 3 I n p u t S e a l R e m o v a l

A . 4 I n p u t S e a l I n s t a l l a t i o n

A . 5 I n p u t S e a l S l i n g e r I n s t a l l a t i o n

A . 6 I n p u t F l a n g e I n s t a l l a t i o n

B . 1 F r o n t O u t p u t F l a n g e R e m o v a l

B . 2 F r o n t O u t p u t S e a l S l i n g e r R e m o v a l

B . 3 F r o n t O u t p u t S e a l R e m o v a l

B . 4 F r o n t O u t p u t S e a l I n s t a l l a t i o n

B . 5 F r o n t O u t p u t S e a l S l i n g e r I n s t a l l a t i o n

B . 6 F r o n t O u t p u t F l a n g e I n s t a l l a t i o n

C . 1 R e a r O u t p u t F l a n g e R e m o v a l

C . 2 R e a r O u t p u t S e a l S l i n g e r R e m o v a l

C . 3 I n p u t S e a l R e m o v a l

C . 4 R e a r O u t p u t S e a l I n s t a l l a t i o n

C . 5 R e a r O u t p u t S e a l S l i n g e r I n s t a l l a t i o n

C . 6 R e a r O u t p u t F l a n g e I n s t a l l a t i o n

D . 1 S h i f t S h a f t O - R i n g R e t a i n e r R e m o v a l a n d R e p l a c e m e n t

D . 2 S h i f t S h a f t O - R i n g R e m o v a l a n d R e p l a c e m e n t

E . 1 E l e c t r i c A c t u a t o r ( M o t o r ) R e m o v a l

E . 2 E l e c t r i c A c t u a t o r ( M o t o r ) I n s t a l l a t i o n

F . 1 T r a n s f e r C a s e V e n t R e m o v a l

F . 2 T r a n s f e r C a s e V e n t I n s t a l l a t i o n

G . 1 D e t e n t S c r e w / O - r i n g A s s e m b l y R e p l a c e m e n t

H . 1 T r a n s f e r C a s e F a s t e n e r R e p l a c e m e n t

4 . T R A N S F E R C A S E S H I F T P O S I T I O N S

5 . T R A N S F E R C A S E M A I N T E N A N C E S C H E D U L E A N D P R O C E D U R E S

6 . A P P E N D I X

P a g e #

3

4

7

7

8

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1 1

1 2

1 3

1 4

1 5

1 6

1 7

1 8

1 9

2 0

2 1

2 2

2 3

2 4

2 5

2 6

2 7

2 8

2 9

3 0

3 1

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1 . T R A N S F E R C A S E I D E N T I F I C A T I O N T A G S U M M A R Y

T h e M a g n a P o w e r t r a i n N e w P r o c e s s G e a r i d e n t i f i c a t i o n t a g i sa t t a c h e d t o t h e r e a r h ou s i n g o f t h e t r a n s f e r c a s e . U n i t s p e c i f i ci n f o r m a t i o n i s c o n t a i n e d o n t h i s t a g . S e e f i g u r e 1 .

F i g u r e 1 : T r a n s f e r C a s e I d e n t i f i c a t i o n T a g


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2 . S U M M A R Y O F S E R V I C A B L E C O M P O N E N T S

1 . V e n t P / N 5 1 4 1 12 . I n p u t / R ea r O u t pu t F l a n g e P / N 2 5 4 4 03 . I n p u t / R ea r O u t pu t N u t P / N 2 5 5 4 14 . I n p u t S e a l S l i n g e r P / N 5 3 3 1 75 . F r o n t O u t p u t N u t P / N 1 3 3 6 86 . F r o n t O u t p u t F l a n g e P / N 2 5 8 7 17 . O u t p u t S e a l S l i n g e r P / N 5 1 6 7 68 . C a s e F l a n g e M o u n t S t u d P / N 5 1 3 5 89 . R e a r R e t a i n e r M o u n t S t u d P / N 5 1 3 6 21 0 . I n p u t S e a l P / N 5 1 3 4 71 1 . I n p u t M o u n t S t u d P / N 2 6 0 7 01 2 . E l e c t r i c A c t u a t o r P / N 4 8 4 0 81 3 . M o t o r S c r e w P / N 1 7 1 9 21 4 . O u t p u t S e a l P / N 2 4 2 8 81 5 . O i l F i l l / D r a i n P l u g P / N 5 1 4 1 21 6 . D e t e n t S c r e w / O - R i n g A s s e m b l y P / N 2 3 9 8 91 7 . D e t e n t S p r i n g ( n o t s h o w n ) P / N 1 7 1 7 41 8 . D e t e n t ( n o t s h o w n ) P / N 1 6 7 5 41 9 . S h i f t - S h a f t O - R i n g R e t a i n e r P / N 1 3 7 2 6

2 0 . S h i f t - S h a f t O - R i n g ( n o t s h o w n ) P / N 1 3 7 2 52 1 . T r a n s f e r C a s e C o n t r o l l e r M o d u l e ( n o t s h o w n ) P / N 5 2 7 4 4


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3 . T R A N S F E R C A S E S E R V I C E P R O C E D U R E S

N O T E : U n l e s s o t h e r w i s e n o t e d , a l l re m o v e d p a r t s s h o u l d b ev i s u a l l y i n s p e c t e d a n d s a v e d f o r r e b u i l d .

F o r a n y s e r v i c e p e r f o r m e d w i t h t h e t r a n s f e r c a s e r e m o v e d f r o m t h e

v e h i c l e , u s e p a l l e t a s m . P / N P R 5 5 4 6 2 t o p r o p e r l y s u p p o r t t h e u n i t .U s e c a r e t o n o t d a m a g e t h e i n p u t m o u n t i n g s t u d s w h e n p l a c i n g t h et r a n s f e r c a s e o n t h e p a l l e t a s m .

A . 1 I n p u t F l a n g e R e m o v a l

1 . R e m o v e i n p u t f l a n g e n u t . U s e f l a n g e s p a n n e r w r e nc h P / NP R 5 5 4 6 3 t o h o l d f l a n g e .

2 . P l a c e f l a n g e r e m o v a l p r e s s j a w s u n d e r f l a n g e a n d r e m o v ef l a n g e b y t u r n i n g f l a n g e r e m o v a l p r e s s s h a f t c l o c k w i s e .S e e f i g u r e A 1 .

F i g u r e A 1 : I n p u t F l a n g e R e m o v a l


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A . 2 I n p u t S e a l S l i n g e r R e m o v a l

1 . R e m o v e i n p u t f l a n g e p e r I n p u t F l a n g e R e m o v a l .2 . U s e a m a l l e t t o r e m o v e i n p u t s e a l s l i n g e r a s s h o w n i n

f i g u r e A 2 . U s e c a r e t o a v o i d d a m a g e t o t h e f l a n g e .3 . D i s c a r d r e m o v e d i n p u t s e a l s l i n g e r .

F i g u r e A 2 : I n p u t S e a l S l i n g e r R e m o v a l


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A . 3 I n p u t S e a l R e m o v a l

1 . R e m o v e d r a i n p l u g a n d f u l l y d r a i n u n i t o f o i l .2 . R e m o v e i n p u t s e a l b y g e n t l y p r y i n g u n d e r s e a l b o d y w i t h s e a l

r e m o v a l t o o l ( S n a p - O n s t o c k # Y A 1 0 5 o r e q u i v a l e n t ) a s s h o w n

i n f i g u r e A 3 . I f r e q u i r e d , g e n t l y p r y u n d e r t h e s e a l f l a n g e .D i s c a r d r e m o v e d s e a l .

3 . V i s u a l l y i n s p e c t h o u s i n g s e a l b o r e a n d l e ad - i n c h a m f e r f o r a n y d a m a g e .

F i g u r e A 3 : I n p u t S e a l R e m o v a l


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M P 1 5 2 8 S e r v i c e I n s t r u c t i o n s P a g e 1 0 o f 3 6

A . 4 I n p u t S e a l I n s t a l l a t i o n

1 . C l e a n a n d v i s u a l l y i n s p e c t h o u s i n g i np u t s e a l b o r e t o e n s u r en o d e b r i s o r c o n t a m i n a t i o n .

2 . A p p l y P e r f e c t S e a l s e a l a n t o r e q u i v a l e n t , a s n e e d e d , t o t h em e t a l p o r t i o n o f t h e s e a l O D .

3 . A l i g n s e a l t o s e a l b o r e a n d s t a r t i n l e a d - i n c h a m f e r .4 . P l a c e i n p u t s e a l i n s t a l l a t i o n t o o l P / N P R 5 5 4 6 6 o v e r s e a l .5 . S e a t i n p u t s e a l b y d r i v i n g s e a l i n s t a l l a t i o n t o o l w i t h a r u b b e r

m a l l e t . S e e f i g u r e A 4 .6 . V i s u a l l y i n s p e c t a n d c l e a n r e p a i r a r e a .7 . R e p l a c e d r a i n p l u g a n d r e f i l l u n i t w i t h 5 . 0 - 5 . 5 p i n t s o f T e x a c o

P / N 1 8 5 4 D e x r o n I I I A T F o r a p p r o v e d e q u i v a l e n t . S e e T r a n s f e r C a s e F l u i d F i l l f o r a d d i t i o n a l i n f o r m a t i o n .

< ! > C a u t i o n

U s e c a r e t o e n s u r e t h a t i n p u t s e a l l i p i s n o t r o l l e d o r o t h e r w i s e d a m a g e d d u r i n g a s s e m b l y o n t o i n p u t g e a r a s s e m b l y

( s e a l j o u r n a l ) .

F i g u r e A 4 : I n p u t S e a l I n s t a l l a t i o n


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A . 5 I n p u t S e a l S l i n g e r I n s t a l l a t i o n

1 . P l a c e s l i n g e r p r e s s - b a s e P / N P R 5 3 5 2 9 i n a p p r o p r i a t e p r e s s .2 . P l a c e s l i n g e r o n p r e s s b a s e , a l i g n f l a n g e a n d p r e s s f l a n ge

u s i n g i n p u t / r e a r o u t p u t s l i n g e r p r e s s t o o l P / N P R 5 3 5 3 1 u n t i ls l i n g e r i s f l u s h t o f l a n g e s h o u l d e r , a s s h o w n i n f i g u r e A 5 .

F i g u r e A 5 : I n p u t S e a l S l i n g e r I n s t a l l a t i o n


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A . 6 I n p u t F l a n g e I n s t a l l a t i o n

1 . A l i g n i n p u t f l a n g e s p l i n e t o i n p u t s h a f t s p l i n e a n da s s e m b l e f l a n g e o n t o s h a f t .

2 . H o l d f l a n g e u s i n g f l a n g e s p a n n e r w r e n c h P / N P R 5 5 4 6 3 .I n s t a l l i n p u t / r e a r o u t p u t n u t P / N 2 5 4 4 1 t o d r a w d o w n

a n d s e a t f l a n g e o n t o s h a f t . T i g h t e n n u t t o 2 1 7 - 2 8 5 N - m( 1 6 0 . 1 - 2 1 0 . 2 l b - f t ) . S e e f i g u r e A 6 .

F i g u r e A 6 : I n p u t F l a n g e I n s t a l l a t i o n


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B . 1 F r o n t O u t p u t F l a n g e R e m o v a l

1 . R e m o v e f r o n t o u t p u t f l a n g e n u t . U s e f l a n g e s p a n n er w r e n c h P / N P R 5 5 4 6 3 t o h o l d f l a n g e .

2 . P l a c e f l a n g e r e m o v a l p r e s s j a w s u n d e r f l a n g e a n d r e m o v ef l a n g e b y t u r n i n g f l a n g e r e m o v a l p r e s s s h a f t c l o c k w i s e .

S e e f i g u r e B 1 .

F i g u r e B 1 : F r o n t O u t p u t F l a n g e R e m o v a l


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B . 2 F r o n t O u t p u t S e a l S l i n g e r R e m o v a l

1 . R e m o v e f r o n t o u t p u t f l a n g e p e r F r o n t O u t p u t F l a n g eR e m o v a l p r o c e d u r e .

2 . U s e a m a l l e t t o r e m o v e f r o n t o u t p u t s e a l s l i n g e r a ss h o w n i n f i g u r e B 2 . U s e c a r e t o a v o i d d a m a g e t o t h e

f l a n g e .3 . D i s c a r d r e m o v e d f r o n t o u t p u t s e a l s l i n g e r .

F i g u r e B2 : F r o n t O u t p u t S e a l S l i n g e r Re m o v a l


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B . 3 F r o n t O u t p u t S e a l R e m o v a l

1 . R e m o v e d r a i n p l u g a n d f u l l y d r a i n u n i t o f o i l .2 . R e m o v e f r o n t o u t p u t s e a l b y g e n t l y p r y i n g u n de r s e a l b o d y

w i t h s e a l r e m o v a l t o o l ( S n a p - O n s t o c k # Y A 1 0 5 o r e q u i v a l e n t ) a s s h o w n i n f i g u r e B 3 . I f r e q u i r e d , g e n t l y p r y

u n d e r t h e s e a l f l a n g e . D i s c a r d r em o v e d s e a l .3 . V i s u a l l y i n s p e c t h o u s i n g s e a l b o r e f o r a n y d a m a g e .

F i g u r e B 3 : F r o n t O u t p u t S e a l R e m o v a l


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B . 4 F r o n t O u t p u t S e a l I n s t a l l a t i o n

1 . C l e a n a n d v i s u a l l y i n s p e c t h o u s i n g f r o n t o u t p u t s e a lb o r e t o e n s u r e n o d e b r i s o r c o n t a m i n a t i o n .

2 . A p p l y P e r f e c t S e a l s e a l a n t o r e q u i v a l e n t , a s n e e d e d ,t o t h e m e t a l p o r t i o n o f t h e s e a l O D .

3 . A l i g n s e a l t o s e a l b o r e a n d s t a r t i n l e a d - i n c h a m f e r .4 . P l a c e o u t p u t s e a l i n s t a l l a t i o n t o o l P / N P R 5 5 4 6 7 o v e r

s e a l .5 . S e a t f r o n t o u t p u t s e a l b y d r i v i n g s e a l i n s t a l l a t i o n t o o l

w i t h a r u b b e r m a l l e t . S e e f i g u r e B 4 .6 . V i s u a l l y i n s p e c t a n d c l e a n r e p a i r a r e a .7 . R e p l a c e d r a i n p l u g a n d r e f i l l u n i t w i t h 5 . 0 - 5 . 5 p i n t s o f

T e x a c o P / N 1 8 5 4 D e x r o n I I I A T F o r a p p r o v e de q u i v a l e n t . S e e T r a n s f e r C a s e F l u i d F i l l f o r a d d i t i o n a l i n f o r m a t i o n .

< ! > C a u t i o n

U s e c a r e t o e n s u r e t h a t f r o n t o u t p u t s e a l l i p i s n o t r o l l e d o r o t h e r w i s e d a m a g e d d u r i n g a s s e m b l y o n t o f r o n t o u t p u t s h a f t( s e a l j o u r n a l ) .

F i g u r e B 4 : F r o n t O u t p u t S e a l I n s t a l l a t i o n


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B . 5 F r o n t O u t p u t S e a l S l i n g e r I n s t a l l a t i o n

1 . P l a c e s l i n g e r p r e s s - b a s e P / N P R 5 3 5 2 9 i n a p p r o p r i a t ep r e s s .

2 . P l a c e s l i n g e r o n p r e s s b a s e , a l i g n f l a n g e a n d p r e s s f l a ng eu s i n g f r o n t o u t p u t s l i n g e r p r e s s t o o l P / N P R 5 3 5 3 0 u n t i l

s l i n g e r i s f l u s h t o f l a n g e s h o u l d e r , a s s h o w n i n f i g u r e B 5 .

F i g u r e B5 : F r o n t O u t p u t S e a l S l i n g e r I n s t al l a t i o n


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B . 6 F r o n t O u t p u t F l a n g e I n s t a l l a t i o n

1 . A l i g n f r o n t o u t p u t f l a n g e s p l i n e t o f r o n t o u t p u t s h a f t s p l i n ea n d a s s e m b l e f l a n g e o n t o s h a f t .

2 . H o l d f l a n g e u s i n g f l a n g e s p a n n e r w r e n c h P / N P R 5 5 4 6 3 .I n s t a l l f r o n t o u t p u t n u t P / N 1 3 3 6 8 t o d r a w d o w n a n d s e a t

f l a n g e o n t o s h a f t . T i g h t e n n u t t o 1 7 6- 2 7 1 N - m ( 1 2 9 . 8 -1 9 9 . 9 l b - f t ) . S e e f i g u r e B 6 .

F i g u r e B 6 : F r o n t O u t p u t F l a n g e I n s t a l l a t i o n


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C . 1 R e a r O u t p u t F l a n g e R e m o v a l

1 . R e m o v e o u t p u t f l a n g e n u t . U s e f l a n g e s p a n n er w r e n c hP / N P R 5 5 4 6 3 t o h o l d f l a n g e .

2 . P l a c e f l a n g e r e m o v a l p r e s s j a w s u n d e r f l a n g e a n dr e m o v e f l a n g e b y t u r n i n g f l a n g e r e m o v a l p r e s s s h a f t

c l o c k w i s e . S e e f i g u r e C 1 .

F i g u r e C 1 : R e a r O u t p u t F l a n g e R e m o v a l


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C . 2 R e a r O u t p u t S e a l S l i n g e r R e m o v a l

1 . R e m o v e r e a r o u t p u t f l a n g e p e r R e a r O u t p u t F l a n g eR e m o v a l p r o c e d u r e .

2 . U s e a m a l l e t t o r e m o v e r e a r o u t p u t s e a l s l i n g e r a ss h o w n i n f i g u r e C 2 . U s e c a r e t o a v o i d d a m a g e t o t h e

f l a n g e .3 . D i s c a r d r e m o v e d r e a r o u t p u t s e a l s l i n g e r .

F i g u r e C2 : R e a r O u t p u t Se a l S l i n g e r Re m o v a l


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C . 3 R e a r O u t p u t S e a l R e m o v a l

1 . R e m o v e d r a i n p l u g a n d f u l l y d r a i n u n i t o f o i l .2 . R e m o v e r e a r o u t p u t s e a l b y g e n t l y p r y i n g u n d e r s e a l

b o d y w i t h s e a l r e m o v a l t o o l ( S n a p - O n s t o c k # Y A 1 0 5 o r e q u i v a l e n t ) a s s h ow n i n f i g u r e C 3 . I f r e q u i r e d , g e n t l y

p r y un d e r t h e s e a l f l a n g e . D i s c a r d r e m o v e d s e a l .3 . V i s u a l l y i n s p e c t h o u s i n g s e a l b o r e f o r a n y d a m a g e .

F i g u r e C 3 : R e a r O u t p u t S e a l R e m o v a l


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C . 4 R e a r O u t p u t S e a l I n s t a l l a t i o n

1 . C l e a n a n d v i s u a l l y i n s p e c t h o u s i n g r e a r o u t p u t s e a lb o r e t o e n s u r e n o d e b r i s o r c o n t a m i n a t i o n .

2 . A p p l y P e r f e c t S e a l s e a l a n t o r e q u i v a l e n t , a s n e e d e d ,t o t h e m e t a l p o r t i o n o f t h e s e a l O D .

3 . A l i g n s e a l t o s e a l b o r e a n d s t a r t i n l e a d - i n c h a m f e r .4 . P l a c e o u t p u t s e a l i n s t a l l a t i o n t o o l P / N P R 5 5 4 6 7 o v e r

s e a l .5 . S e a t r e a r o u t p u t s e a l b y d r i v i n g s e a l i n s t a l l a t i o n t o o l

w i t h a r u b b e r m a l l e t . S e e f i g u r e C 4 .6 . V i s u a l l y i n s p e c t a n d c l e a n r e p a i r a r e a .7 . R e p l a c e d r a i n p l u g a n d r e f i l l u n i t w i t h 5 . 0 - 5 . 5 p i n t s o f

T e x a c o P / N 1 8 5 4 D e x r o n I I I A T F o r a p p r o v e de q u i v a l e n t . S e e T r a n s f e r C a s e F l u i d F i l l f o r a d d i t i o n a l i n f o r m a t i o n .

< ! > C a u t i o n

U s e c a r e t o e n s u r e t h a t r e a r o u t p u t s e a l l i p i s n o t r o l l e d o r o t h e r w i s e d a m a g e d d u r i n g a s s e m b l y o n t o o u t p u t s h a f t ( s e a lj o u r n a l ) .

F i g u r e C 4 : R e a r O u t p u t S e a l I n s t a l l a t i o n


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C . 5 R e a r O u t p u t S e a l S l i n g e r I n s t a l l a t i o n

1 . P l a c e s l i n g e r p r e s s - b a s e P / N P R 5 3 5 2 9 i n a p p r o p r i a t ep r e s s .

2 . P l a c e s l i n g e r o n p r e s s b a s e , a l i g n f l a n g e a n d p r e s s f l a ng eu s i n g i n p u t / r e a r o u t p u t s l i n g e r p r e s s t o o l P / N P R 5 3 5 3 1

u n t i l s l i n g e r i s f l u s h t o f l a n g e s h o u l d e r , a s s h o w n i n f i g u r eC 5 .

F i g u r e C5 : R e a r O u t p u t S e a l S l i n g e r I n s t a l l a t i o n


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C . 6 R e a r O u t p u t F l a n g e I n s t a l l a t i o n

1 . A l i g n r e a r o u t p u t f l a n g e s p l i n e t o r e a r o u t p u t s h a f ts p l i n e a n d a s s e m b l e f l a n g e o n t o s h a f t .

2 . H o l d f l a n g e u s i n g f l a n g e s p a n n e r w r e n c h P / N P R 5 5 4 6 3 .I n s t a l l i n p u t / r e a r o u t p u t n u t P / N 2 5 4 4 1 t o d r a w d o w n

a n d s e a t f l a n g e o n t o s h a f t . T i g h t e n n u t t o 2 1 7 - 2 8 5 N - m( 1 6 0 . 1 - 2 1 0 . 2 l b - f t ) . S e e f i g u r e C 6 .

F i g u r e C 6 : R e a r O u t p u t F l a n g e I n s t a l l a t i o n


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D . 1 S h i f t S h a f t O - R i n g R e t a i n e r R e m o v a l a n dR e p l a c e m e n t

1 . R e m o v e e l e c t r i c a c t u a t o r p e r e l e c t r i c a c t u a t o r r e m o v a l p r o c e d u r e .

2 . P r y s h i f t s h a f t o - r i n g r e t a i n e r f r o m c o u n t e r b o r e u s i n g

a p i c k or s m a l l sc r e w d r i v e r . S e e f i g u r e D 1 f o r d e t a i l .3 . R e v e r s e p r o c e d u r e t o i n s t a l l .

< ! > C a u t i o n

U s e c a r e t o e n s u r e t h a t o - r i n g c o u n t e r b o r e i s n o t d a m a g e dd u r i n g d i s a s s e m b l y .

F i g u r e D 1 : S h i f t S h a f t O - R i n g R e t a i n e r R e m o v a l a n dR e p l a c e m e n t


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D . 2 S h i f t S h a f t O - R i n g R e m o v a l a n d R e p l a c e m e n t

1 . R e m o v e e l e c t r i c a c t u a t o r p e r e l e c t r i c a c t u a t o r r e m o v a l p r o c e d u r e .

2 . R e m o v e s h i f t s h a f t o - r i n g r e t a i n e r p e r s h i f t s h a f t o -r i n g r e t a i n e r r e m o v a l p r o c e d u r e .

3 . P r y s h i f t s h a f t o - r i n g f r o m c o u n t e r b o r e u s i n g a p i c ko r s m a l l s c r e w d r i v e r . S e e f i g u r e D 2 f o r d e t a i l .

4 . R e v e r s e p r o c e d ur e t o i n s t a l l . A p p l y u n i f o r m p r e s s ur ew h e n i n s t a l l i n g r e p l a c e m e n t o - r i n g t o p r e v e n t r o l l i n go r c r e a s i n g . A p p l y t r a n s f e r c a s e l u b r i c a n t ( A T F ) t ot h e r e p l a c e m e n t o - r i n g a s n e e d e d t o a i d a s s e m b l y .C l e a n e x c e s s o i l f r o m m o u n t i n g f a c e b e f o r er e i n s t a l l i n g e l e c t r i c a c t u a t o r ( m o t o r ) .

< ! > C a u t i o n

U s e c a r e t o e n s u r e t h a t o - r i n g c o u n t e r b o r e i s n o t d a m a g e dd u r i n g d i s a s s e m b l y .

U s e c a r e t o e n s u r e o - r i n g i s n o t c r e a s e d o r o t h e r w i s ed a m a g e d d u r i n g r e a s s e m b l y .

F i g u r e D2 : S h i f t S h a f t O - R i n g R e m o v a l a n dR e p l a c e m e n t


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E . 1 E l e c t r i c A c t u a t o r ( M o t o r ) R e m o v a l

1 . D i s c o n n e c t a l l e l e c t r i c a l c o n n e c t i o n s f r o m e l e c t r i ca c t u a t o r ( i f r e p l a c e m e n t i s d o n e i n v e h i c l e ) .

2 . R e m o v e ( 3 ) M 8 e l e c t r i c ac t u a t o r s c r e ws . S e e f i g u r eE 1 .

3 . P u l l e l e c t r i c a c t u a t o r s t r a i g h t o f f p i l o t a n d s p l i n e ds h a f t t o d i s e n g a g e .

F i g u r e E 1 : E l e c t r i c Ac t u a t o r ( M o t o r ) R e m o v a l


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E . 2 E l e c t r i c A c t u a t o r ( M o t o r ) I n s t a l l a t i o n

1 . L i g h t l y g r e a s e h o u s i n g m o t o r f a c e .2 . A l i g n e l e c t r i c a c t u a t o r t o s h i f t s h a f t s p l i n e , f r o n t

h o u s i n g a d a p t e r p i l o t c o u n t e r b o r e a n d ( 3 ) a c t u a t o r m o t o r s c r e w h o l e s .

N O T E : M i s s i n g t o o t h i n a c t u a t o r d r i v e s p l i ne m u s tb e a l i g n e d t o m i s s i n g t o o t h o n s h i f t s h a f t .

3 . S l i d e o n t o s h i f t s h a f t , i n t o c o u n t e r b o r e a n d s e a t t om o u n t i n g f a c e .

4 . I n s t a l l ( 3 ) e l e c t r i c a c t u a t o r m o u n t i n g s c r e w s .A s s e m b l e a l l s c r e w s u n t i l t h e y a r e l i g h t l y s e a t e d t ot h e e l e c t r i c a c t u a t o r s c r e w b o s s f a c e s .

5 . T i g h t e n ( 3 ) e l e c t r i c a c t u a t o r m o u n t i n g s c r e w s t o1 6 . 0 - 2 4 . 0 N- m ( 1 1 . 8 - 1 7 . 7 L b - f t ) . S e e f i g u r e E 2 .

< ! > C a u t i o n

D o n o t f u l l y t o r q u e a n y e l e c t r i c a c t u a t o r s c r e w s b e f o r e a l l

h a v e b e e n s e a t e d a g a i n s t t h e e l e c t r i c a c t u a t o r s c r e w b o s sf a c e s . F a i l u r e t o e v e n l y t i g h t e n t h e s e f a s t e n e r s m a y c a u s ee x c e s s m i s a l i g n m e n t a n d e l e c t r i c a c t u a t o r f a i l u r e .

F i g u r e E 2 : E l e c t r i c A c t u a t o r ( M o t o r ) I n s t a l l a t i o n


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F . 1 T r a n s f e r C a s e V e n t R e m o v a l

1 . G r a s p t r a n s f e r c a s e v e n t w i t h l o c k i n g p l i e r s o r e q u i v a l e n t . R o t a t e w h i l e p u l l i n g v e n t s t r a i g h t o u t o f t h e t r a n s f e r c as e . S e e f i g u r e F 1 .

< ! > C a u t i o n

E x c e s s i v e r o c k i n g o r b e n d i n g o f t h e v e n t d u r i n g r e m o v a l m a yd a m a g e t h e f r o n t h o u s i n g m a c h i n e d v e n t h o l e .

F i g u r e F 1 : T r a n s f e r C a s e V e n t R e m o v a l


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F . 2 T r a n s f e r C a s e V e n t I n s t a l l a t i o n

1 . A p p l y L o c t i t e 6 8 0 ( o r e q u i v a l e n t ) s e a l a n t t o t h eo u t s i d e o f t h e v e n t w h e r e i t e n g a g e s t h e h o u s i n gb o r e .

2 . A l i g n a n d h a n d s t a r t v e n t i n t o h o u s i n g .

3 . U s e v e n t i n s t a l l a t i o n t o o l P / N P R 5 5 4 6 4 a n d m a l l e t t of u l l y s e a t v e n t a s s h o w n i n f i g u r e F 2 .

4 . W i p e a n y e x c e s s s e a l a n t f r o m v e n t a n d h o u s i n g a f t e r i n s t a l l a t i o n .

F i g u r e F 2 : T r a n s f e r C a s e V e n t I n s t a l l a t i o n


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G . 1 D e t e n t S c r e w / O - r i n g A s s e m b l y R e p l a c e m e n t

1 . R e m o v e d r a i n p l u g a n d f u l l y d r a i n u n i t o f o i l .2 . R e m o v e d e t e n t s c r e w / o - r i n g a s s e m b l y .3 . C l e a n a n d v i s u a l l y i n s p e c t d e t e n t s c r e w t h r e a d e d

h o l e .

4 . I n s t a l l r e p l a c e m e n t d e t e n t s c r e w / o - r i n g a s s e m b l y .T i g h t e n d e t e n t s c r e w t o 1 6 . 0 - 2 4 . 0 N - m ( 1 1 . 8 - 1 7 . 7 L b -f t ) .

5 . S e e f i g u r e s G 1 a n d G 2 f o r d e t a i l .

F i g u r e G 1 : D e t e n t S c r e w A s s e m b l y

F i g u r e G 2 : D e t e n t S c r e w A s m D e t a i l


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H . 1 T r a n s f e r C a s e F a s t e n e r R e p l a c e m e n t

S e e t h e c h a r t b e l o w f o r s e r v i c e a b l e f a s t e n e r s , r e p l a c e m e n t p a r tn u m b e r s a n d a s s e m b l y t o r q u e s . F u r t h e r d e t a i l r e g a r d i n gs e r v i c e a b l e f a s t e n e r s c a n b e f o u n d i n s e c t i o n 2 o f t h i s m a n u a l .

F a s t e n e r N a m e P a r t N u m b e r A s s e m b l y R e q u i r e m e n t

C a s e f l a n g e m o u n ts t u d

5 1 3 5 8T o r q u e t o 2 3 . 7 - 3 0 . 5 N - m( 1 7 . 5 - 2 2 . 5 L b - f t )

R e a r r e t a i n e r m o u n ts t u d

5 1 3 6 2T o r q u e t o 2 7 . 0 - 3 4 . 0 N - m( 1 9 . 9 - 2 5 . 1 L b - f t )

I n p u t m o u n t s t u d 2 6 0 7 0D r i v e t o 3 0 + / - 0 . 6 4 m mi n s t a l l e d h e i g h t


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4 . T r a n s f e r C a s e S h i f t P o s i t i o n s

T r a n s f e r c a s e s h i f t p o s i t i o n c a n b e c o n f i r m e d b y t h e p o s i t i o n o f t h es h i f t s h a f t m i s s i n g t o o t h . S e e f i g u r e 4 . M o d e c a n b e c o n f i r m e d b yr o t a t i n g t h e f r o n t o u t p u t ;

- F r o n t o u t p u t r o t a t e s f r e e l y

2 W D- F r o n t o u t p u t d o e s n o t r o t a t e ( l o c k e d t o i n p u t ) 4 W D

U s e s e c t o r s h a f t s o c k e t P / N P R 5 3 8 7 7 t o m a k e a n y r e q u i r e d s h i f tp o s i t i o n c h a n g e s w h e n t h e e l e c t r i c a c t u a t o r i s r e m o v e d f r o m t h eu n i t .

T h e s e c t o r s h a f t s o c k e t c a n b e u s e d t o c o n f i r m a u n i t s p h y s i c a la b i l i t y t o s h i f t i f r e q u i r e d i n t h e c o u r s e o f i s s u e t r o u b l e s h o o t i n g .

T r a n s f e r c a s e s h i f t p o s i t i o n m u s t m a t c h t h e e l e c t r i c a c t u a t o r p o s i t i o n b e f o r e r e a s s e m b l y .

F i g u r e 4 : T r a n s f e r C a s e S h i f t P o s i t i o n s( m i s s i n g t o o t h p o s i t i o n )


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5 . T R A N S F E R C A S E M A I N T E N A N C E S C H E D U L E A N DP R O C E D U R E S

F l u i d l e v e l c h e c k p r o c e d u r e

T r a n s f e r C a s e l u b r i c a n t l e v e l s h o u l d b e c h e c k e d a f t e r e v e r y1 0 0 0 0 m i l e s o f v e h i c l e o p e r a t i o n o r a t r o u t i n e v e h i c l es e r v i c e , w h i c h e v e r c o m e s f i r s t .

N O T E : V e h i c l e s ho u l d b e o n a l e v e l s u r f a c e d u r i n g f l u i dc h e c k

1 . R e m o v e t r a n s f e r c a s e f i l l p l u g .2 . U s e f i n g e r o r a l l e n w r e n c h t o c o n f i r m f l u i d l e v e l i s

w i t h i n 3 / 8 o f t h e bo t t o m o f t h e f i l l h o l e . A d d f l u i da s n e e d e d p e r f l u i d f i l l p r o c e d u r e i f b e l o w t h i sl e v e l .

3 . R e p l a c e f i l l p l u g a n d t i g h t e n t o 2 0 - 3 4 N - m ( 1 4 . 8 -

2 5 . 1 L b - f t ) .

< ! > C a u t i o n

D o N o t Us e I m p a c t W r e n c h O n F i l l O r D r a i n P l u g s . D a m a g eT o t h e T h r e a d s / P l u g s M a y R e s u l t .

F l u i d d r a i n a n d r e p l a c e m e n t p r o c e d u r e

T r a n s f e r c a s e l u b r i c a n t i s t o b e d r a i n e d a n d r e p l a c e d a f t e r e v e r y 6 0 0 0 0 m i l e s o f v e h i c l e o p e r a t i o n .

N O T E : V e h i c l e s ho u l d b e o n a l e v e l s u r f a c e d u r i n g f l u i dc h e c k

1 . R e m o v e t r a n s f e r c a s e f i l l a n d d r a i n p l u g s a n d f u l l yd r a i n u n i t .

2 . C l e a n , v i s u a l l y i n s p e c t a n d r e p l a c e d r a i n p l u g .T i g h t e n t o 2 0 - 3 4 N - m ( 1 4 . 8 - 2 5 . 1 L b - f t ) .

3 . F i l l u n i t w i t h 5 . 0 - 5 . 5 p i n t s o f T e x a c o P / N 1 8 5 4D e x r o n I I I A T F o r a p p r o v e d e q u i v a l e n t . U s e f i n g e r t o c o n f i r m f l u i d l e v e l i s w i t h i n o f t h e b o t t o m o f t h e f i l l h o l e . A d d f l u i d a s n e e d e d t o a c h i e v e t h i sl e v e l .

4 . R e p l a c e f i l l p l u g a n d t i g h t e n t o 2 0 - 3 4 N - m ( 1 4 . 8 -

2 5 . 1 L b - f t ) .


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T r a n s f e r c a s e / v e h i c l e u n d e r b o d y w a s h C a u t i o n s

W h e n p r e s s u r e w a s h i n g t h e t r a n s f e r c a s e o r v e h i c l eu n d e r b o d y , u s e c a u t i o n t o a v o i d a n y h i g h p r e s s u r e w a t e r s t r e a m d i r e c t l y o n t o a n y t r a n s f e r c a s e s e a l l i p s , m o t o r c o n n e c t i o n , v e n t o r v e n t t u b e i n t e r f a c e . D i r e c t h i g h p r e s s u r es t r e a m s o n t h e s e s u r f a c e s / c o m p o n e n t m a y l e a d t o w a t e r i n t r u s i o n i n t o t h e t r a n s f e r c a s e .


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6 . A P P E N D I X

T r a n s f e r C a s e S e r v i c e a b l e C o m p o n e n t T o r q u e C h a r t

Assembly TorqueComponent

PartNumber N-m Lbf-ft

Stud - Rear Case 51358 23.7-30.5 17.5-22.5

Bolt - Retainer 25625 27.0-34.0 19.9-25.1

Stud - Rear Retainer 51362 27.0-34.0 19.9-25.1

Plug - Fill 51412 20.0-34.0 14.8-25.1

Plug - Drain 51412 20.0-34.0 14.8-25.1

Bolt - Motor 17192 16.0-24.0 11.8-17.7

Nut - Rear Output 25441 217.0-285.0 160.1-210.2

Nut - Front Input 25411 217.0-285.0 160.1-210.2

Nut - Front Output 13368 176.0-271.0 129.8-199.9

Adapter - Motor 31915 27.0-34.0 19.9-25.1

Screw Asm - Detent 23989 16.0-24.0 11.8-17.7

A p p r o v e d T r a n s f e r C a s e F l u i d s

1 . T e x a c o P / N 1 8 5 4 D e x r o n I I I A T F


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International MXT

MP1528 Transfer Case

Electrical Troubleshooting

Procedures


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Table of Contents:

1. General

1.1. Definitions

1) Actuator

2) Module

3) Transfer Case

4) Mode Shift

5) Range Shift

1.2. Required Tools

2. Troubleshooting

2.1. From 2H to 4H

2.2. From 4H to 4L

2.3. From 4L to 4H

2.4. From 4H to 2H

2.5. From 2H to 4L

2.6. From 4L to 2H

2.7. Indicator Test Procedure

2.8. Diagnost ic Test Procedure

2.9. Diagnost ic Connector Test Procedure

3. References

3.1. Mechanization Diagram

3.2. Actuator

1) Mounting Position

2) Interface Connector

3) Actuator Position Voltages

3.3. Module

1) Pinout Diagram

2) Module I/O Voltages

3) Effects of Faults

3.4. Switch


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1. General

1.1. Definitions

1) Actuator

An electrical motor that controls the physical shifting inside the transfer case. It is also known as

Transfer Case Rotary Actuator.

2) Module

A control module that includes a microprocessor that controls the actuator. It is also known asTransfer Case Control Module.

3) Transfer Case

A device that receives power from the transmission and sends it to both the front and rear axles.

4) Mode Shift

A shift between any of the high range modes (2H, 4H).

5) Range Shift

A shift between H range and L range. Any shift into or out of 4L is considered a Range Shift.

1.2. Required Tools

1) A tool to verify that the module is communicating on the Controller Area Network (CAN).

2) A tool to verify that the module is communicating the correct transmission position.

3) A tool to verify that the module is communicating the correct vehicle speed.

4) A multimeter to check the voltage and to conduct continuity tests.


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2. Troubleshooting

2.1. From 2H to 4H

Step: Condition: Yes: No:

1 Is the selector switch in the 4H position? Proceed to the next step. Switch to the 4H position.

2 Does the 2H indicator remain solid with the 4Hindicator flashing?

Proceed to the next step. Proceed to the indicatortest procedure. (Section2.7)

3 Does the 4H indicator remain solid with the 2Hindicator turned off?

Test completed. Proceed to the diagnostictest procedure. (Section2.8)


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2.2. From 4H to 4L


1 Is the selector switch in the 4L position? Proceed to the next step. Switch to the 4L position.

2 Is the vehicle in neutral? (Use a tool forverification.)

Proceed to the next step. Put the vehicle intoneutral.

3 Is the vehicle below 3 mph? (Use a tool forverification.)

Proceed to the next step. Slow down the vehicle to3mph or below.

4 Does the 4H indicator remain solid with the 4Lindicator flashing?


5 Does the 4L indicator remain solid with the 4Hindicator turned off?

Test completed. Proceed to the next step.

6 Does the 4L indicator stop flashing after 30seconds with the 4H indicator turned solid?

Check that the vehicleconditions from steps 1and 2 were met, andrestart the test.

Proceed to the next step.

7 Does the 4L indicator stop flashing before 30seconds with the 2H or 4H indicator turnedsolid?

Proceed to the diagnostictest procedure. (Section2.8)

Refer to actuator section ofMechanical ServiceManual.


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2.3. From 4L to 4H







4 Does the 4L indicator remain solid with the 4Hindicator flashing?


5 Does the 4H indicator remain solid with the 4Lindicator turned off?



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2.4. From 4H to 2H



2 Does the 4H indicator remain solid with the 2Hindicator flashing?


3 Does the 2H indicator remain solid with the 4Hindicator turned off?



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2.5. From 2H to 4L


1 Is the selector switch in the 4L position? Proceed to the next step. Switch to the 4L position.





4 Does the 2H indicator remain solid with the 4Lindicator flashing?


5 Does the 4L indicator remain solid with the 2Hindicator turned off?


6 Does the 4L indicator stop flashing after 30seconds with the 2H indicator turned solid?

Check that the vehicleconditions from steps 1and 2 were met, andrestart the test.

Proceed to the next step.

7 Does the 4L indicator stop flashing before 30seconds with the 2H or 4H indicator turnedsolid?

Proceed to the diagnostictest procedure. (Section2.8)

Refer to actuator section ofMechanical ServiceManual.


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2.6. From 4L to 2H







4 Does the 4L indicator remain solid with the 2Hindicator flashing?


5 Does the 2H indicator remain solid with the 4Lindicator turned off?



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2.7. Indicator Test Procedure


1 Is the vehicle off? Proceed to the next step. Turn off the vehicle andwait 5 minutes, then restartthe test.

2 Turn the key to the RUN position. Did the2H, 4H, and 4L indicators turned on for 2seconds during the lamp check sequence?

Proceed to step 4. Proceed to the next step.

3 Test the continuity between the switch and themodule. Verify the switch output voltages(Section 3.4). Are the values correct?

Proceed to the next step. Replace the switch, and tryshifting again.

4 Is the wiring harness connected securely onthe module and the indicator panel?

Proceed to the next step. Reconnect the wiringharness, then restart thetest.

5 Verify the module I/O voltages (Section 3.3).Are the values correct?

Replace indicator lamp,and try shifting again.

Replace the module, andtry shifting again.


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2.8. Diagnost ic Test Procedure


1 Is the wiring harness connected securely onthe module (Section 3.3)?

Proceed to the next step. Reconnect the wiringharness, and try shiftingagain.

2 Is the wiring harness connected securely onthe actuator (Section 3.2)?

Proceed to the next step. Reconnect the wiring

harness, and try shiftingagain.

3 Is there CAN communication? (Use a tool forverification.)

Proceed to the next step. Proceed to the diagnosticconnector test procedure.(Section 2.9)

4 Roll the vehicle below 3 mph and try shiftingagain. Did the transfer case shift successfully?


5 Verify the actuator connector voltages(Section 3.2). Are the values correct?

Proceed to the next step. Test the continuitybetween the module I/Opins and the actuatorconnector pins. Replacethe wiring harness, and tryshifting again.

6 Replace the actuator, and try shifting again.Did the transfer case shift successfully?


7 Verify the module I/O voltages (Section 3.3).Are the values correct?

The cause of the problemis not electrical. Consultthe mechanicaltroubleshooting manual.

Replace the module, andtry shifting again.


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2.9. Diagnost ic Connector Test Procedure


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Test case: Expected value: Cause:

Diagnostic connector cavityB to ground:

12 1.5V If voltage is missing, check for open or shorts incircuits between diagnostic connector and F6.

Also check for blown fuse F6.

Diagnostic connector cavity

B to cavity A:

12 1.5V If voltage is missing, check for open in ground

circuits between diagnostic connector and groundstud (1851).

If voltage is correct, then the diagnostic connectoris inoperative. It should be replaced.

Diagnostic connector cavityC to cavity A:

2.5 0.5V If voltage is missing, check for open in circuitsbetween diagnostic connector and 1939 data linkcircuits.

Diagnostic connector cavityD to cavity A:

2.5 0.5V If voltage is missing, check for open in circuitsbetween diagnostic connector and 1939 data linkcircuits.

(1650) Pin F to ground: Approximately 4V (+) data link circuit. If voltage is low, check for open

in positive data link circuits.(1650) Pin G to ground: Approximately 1V (-) data link circuit. If voltage is low, check for open

in negative data link circuits. If voltage is high,check for crossed data link circuits.

Extended Descripti on:

Battery voltage required to operate the diagnostic circuits is supplied from fuse F6 on circuit A98 to diagnosticconnector (1650) pin B. Ground is supplied from ground stud connector (1851) to diagnostic connector (1650).


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3. References

3.1. Mechanization Diagram


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3.2. Actuator

1) Mounting Position

Actuator mounting position

Actuator


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2) Interface Connector

Yazaki P/N w/CPA:7283-5927-10

- 2.8 x 0.8 HPA Series, Dark Grey

- Water and airtight sealed connector configuration

- Female terminals 7116-4150-02 & 7116-4152-02 copper alloy material

- Similar to 8-pin male connector assembly: 7282-5574-10 (Polarity A type)

Connector Pin: Signal Description: Module Pin: AWG# for Pigtail Option:

1 Encoder Supply J 1-9 20

2 Encoder Signal J 1-3 20

3 Encoder Return J 1-10 20

4 Motor A Signal J 3-C 14

5 Motor B Signal J 3-D 14

6 - - -

7 - - -

8 - - -


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3) Actuator Position Voltages

Mode: High Target (Encoder Signal Pin J1-3): Low Target (Encoder Signal Pin J1-3):

2HI 4.423V 4.137V

4HI 3.533V 3.247V

4LO 1.703V 1.3V


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3.3. Module

1) Pinout Diagram

NPG 52744 module pinout diagram

NPG 52744 module


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2) Module I/O Voltages

Selector Switch at2HI:

Selector Switch at4HI:

Selector Switch at4LO:

Pin J1-2 (Mode SwitchSupply):

4.805V 5.091V 4.805V 5.091V 4.805V 5.091V

Pin J1-3 (Encoder Signal): 4.137V 4.423V 3.247V 3.533V 1.3V 1.703VPin J1-6 (2HI Lamp): 0V - -

Pin J1-9 (EncoderSupply):

4.805V 5.091V 4.805V 5.091V 4.805V 5.091V

Pin J1-10 (EncoderReturn):

0V 0V 0V

Pin J1-11 (Mode SwitchSelect):

2.9V 3.3V 3.8V 4.1V 4.3V 4.6V

Pin J1-12 (4HI Lamp): - 0V -

Pin J1-13 (4LO Lamp): - - 0V


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3) Effects of Faults

Open Short to Ground Short to Battery(+12V)

Pin J1-2 (ModeSwitch Supply):

No shift due to the switchnot being operational.



Pin J1-3 (EncoderSignal):

No shift due to no encoderfeedback. No shift due to no encoderfeedback. No shift due to encodererror.

Pin J1-6 (2HI Lamp): LED not operational. LED lights up regardlessof position.

LED not operational.

Pin J1-9 (EncoderSupply):

No shift due to no encodersupply voltage.

No shift due to no encodersupply voltage. Possiblycausing a fuse to blow.

No shift due to encodererror.

Pin J1-10 (EncoderReturn):

No shift due to no encoderreturn.

Normal operation. No shift due to no encoderreturn. Possibly causing afuse to blow.

Pin J1-11 (Mode

Switch Select):

No shift due to the switch

not being operational.





Pin J1-12 (4HILamp):

LED not operational. LED lights up regardlessof position.


Pin J1-13 (4LOLamp):

LED not operational. LED lights up regardlessof position.


Pin J3-C (MOTORA):

No shift due to no powerto motor.

Motor will only shift in onedirection.

Motor will only shift in onedirection automatically andstop. No further shifts canbe done.

Pin J3-D (MOTOR

B):

No shift due to no powerto motor.

Motor will only shift in onedirection.

Motor will only shift in onedirection automatically andstop. No further shifts canbe done..


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3.4. Switch

2HI: 4HI: 4LO:

Pin 3 (Mode SwitchSupply):

4.805V 5.091V 4.805V 5.091V 4.805V 5.091V

mxt magna mp1528 transfer case

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