Daewoo Musso. Manual - part 301

5D2-6  TRANSFER CASE (TOD)

Input/Output diagram

TOD control unit and main wiring harness is linked by 30 pin
connector. Each pin joins with switche and actuator whose
details refer to the below diagram.

Battery Power

Ignition ON/OFF

Position Encoder 1

Position Encoder 2

Position Encoder 3

Position Encoder 4

4H / 4L Switch Signal

A/T “N” Position Signal

Speed / TPS Supply

Front Speed Sensor Input

Rear Speed Sensor Input

ABS Operation Signal

Brake Switch Signal

4

5

27

10

28

30

9

24

16

11

29

25

26

19

CAN H

CAN L

Shift Motor output port
(LO-HI)

Shift Motor output port
(HI-LO)

EMC

'4L' Indicator

Position Return

'4WD CHECK' IND

TPS/speed Sensor Ground
(Speed / TPS Return)

2

1

3

21

6

7

13

15

14

K-Line

20

22

23

17

18

TRANSFER CASE (TOD)  5D2-7

1. K-LINE : Communication line for coding and diagnosis with SCANNER.

Classification of Pin No.

Classification

Pin No.

Pin Name

Description

Power Supply

17,18

Ground

TOD control unit ground

4,19

Battery

TOD control unit battery supply : (Fuse No 13,20A)

5

Ignition

Ignition ON / OFF

27

Position 1

Position encoder 1 : check of shift motor position

10

Position 2

Position encoder 2 : check of shift motor position

28

Position 3

Position encoder 3 : check of shift motor position

30

Position 4

Position encoder 4 : check of shift motor position

9

4H/4L Switch

Transfer case mode input

24

Auto T/M Neutral

Check of neutral gear position in Auto T/M

16

Speed

5V supply (TPS / speed sensor)

11

Front Speed

Front speed sensor signal input

Signal Input

29

Rear Speed

Rear speed sensor signal input

25

ABS Operation

ABS ON / OFF

6

Position Return

Position encoder ground

13

Speed / TPS Return

Ground for speed sensor / TPS

22

CAN-L

CAN bus low line

23

CAN-H

CAN bus high line

2,15

Motor LO-HI

Motor output port
-

LO to HI : join with battery

-

HI to LO (or motor brake) : join with ground

1,14

Motor HI-LO

Motor output port
-

HI to LO : join with battery

-

LO to HI (or motor brake) : join with ground

3

EMC

TOD output

Signal Output

21

4L Illumination

Illuminates “4L” indicator

7

Diagnosis Display

4WD check lamp illuminator
-

Upon defect ; Ground circuit

20

K-LINE

1)

Diagnosis

5D2-8  TRANSFER CASE (TOD)

Position Code 1/2/3/4

1110

1010

0010

0000

1110

Initial Operation of TOD Control Unit

When ignition “ON”, “4L” and "4WD check" lamps illuminates
for 0.6second to check bulb in instrument panel, then perform
diagnosis of system.

Position Encoder

The Position Encoder is used by the TCCU to determine the
position of the Shift Motor. Each motor position is identified by
a position code as shown.

Notice

1. All other position codes are invalid

2. Position Input Open Circuit (> 4.5V) = 1

3. Position Input shorted to Speed/Position Return (< 0.5V) = 0

Motor Position

Left Stop

Left of High

High

Right of High

Zone 1

Position Code 1/2/3/4

1001

0001

0101

0100

Motor Position

Neutral

Zone 2

Low

Right Stop

TRANSFER CASE (TOD)  5D2-9

4H/4L Switch Input

4H

4H

4H

4H

4H

4H

4H

4H

4H

4L

4L

4L

4L

4L

4L

4L

4L

4L

Position Sensor Interpretation

1. When the module powers up, it will read the position sensor

and the 4H/4L switch input and respond to the possible
codes as follows

2. A command to shift will only be acted upon if the TCCU is

reading a valid code at the time the command to shift is
made.

3. After a shift has started, the TCCU will power the shift motor

until the code for the requested position is read. If an invalid
code is read, the TCCU will go into a default mode.

4. During a shift attempt, the shift motor will be energized for a

maximum of 5 seconds.

Motor Position

Left Stop

Left of High

High

Right of High

Zone 1

Neutral

Zone 2

Low

Right Stop

Left Stop

Left of High

High

Right of High

Zone 1

Neutral

Zone 2

Low

Right Stop

Action

No action required. 4L bulb off.

No action required. 4L bulb off.

No action required. 4L bulb off.

Blink 4L bulb. After the shift conditions are met, attempt a shift

to 4H under conditions of below 87 rpm in front and rear

propshaft and “Neutral” position. After succesfully shifting into

4H, stop blinking 4L bulb.

Same as above

Same as above

Same as above

Same as above

Same as above

Blink 4L bulb. After the shift conditions are met, attempt a shift

to 4L. After succesfully shifting into 4L, stop blinking 4L bulb.

Same as above

Same as above

Same as above

Same as above

Same as above

Same as above

No action required. 4L bulb on.

No action required. 4L bulb on.