Discovery 2. Manual - part 316

 

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Discovery 2. Manual - part 316

 

 

BODY CONTROL UNIT

DESCRIPTION AND OPERATION

86-3-5

C0661 connector pin details

Pin No.

Description

Input/Output

1

Serial bus to instrument pack and IDM

Input/Output

2

Not used

-

3

Battery backed up sounder code (AL)

Output

4

Diagnostic bi-directional 'K'-line

Input/Output

5

RF regulated power supply

Output

6

RF receiver input

Input

7

Brake switch activated

Input

8

Reverse gear selected

Input

9

Sunroof enable line

Output

10

Robust immobilisation

Output

11

Front washer pump

Input

12

Heated front screen relay

Output

13

Heated front screen active

Output

14

Battery backed up sounder code (ST)

Output

15

Heated rear screen active

Output

16

'N' or 'R' or 'P' or brake selected

Output

17

Not used

-

18

Passive remobilisation exciter coil

Output

19

RF battery supply from fuse 20 in passenger compartment 
fusebox

Input

20

Security status LED

Output

21

Front intermittent wiper

Input

22

Driver's door key unlock

Input

BODY CONTROL UNIT

86-3-6

DESCRIPTION AND OPERATION

C0662 connector pin details

Pin No.

Description

Input/Output

1

Front left window - down

Input

2

Ignition key inserted

Input

3

Rear wiper

Input

4

Vehicle horns

Input

5

Crank enable

Output

6

Gear position switch (Y contacts)

Input

7

CDL doors unlock

Input

8

Rear fog lamps selected

Input

9

Gear position switch (W contacts)

Input

10

Drive selected (HDC)

Output

11

Ignition key interlock solenoid

Output

12

Headlamp powerwash

Output

13

Gear position switch (X contacts)

Input

14

Not used

-

15

Transfer box - neutral selected

Input

16

Seat buckle fastened

Input

BODY CONTROL UNIT

DESCRIPTION AND OPERATION

86-3-7

C0663 connector pin details

Pin No.

Description

Input/Output

1

Crank selected

Input

2

LH direction indicator selected

Input

3

Driver/Passenger seat enable

Output

4

Front fog lamps

Output

5

Heated rear screen selected

Input

6

Ultrasonic input 

Input

7

Gear position switch (Z contacts)

Input

8

Ultrasonic power supply

Output

9

Courtesy lamps

Output

10

Feed to gear position switch (W, X, Y, Z contacts)

Output

11

Park/Neutral selected

Input

12

Hazard warning lamps

Input

BODY CONTROL UNIT

86-3-8

DESCRIPTION AND OPERATION

C0664 connector pin details

IDM inputs
The IDM inputs are communicated to the BCU using the serial datalink so that the BCU can perform the necessary 
logic operations:

The V

in

 for IDM digital signals are defined as follows:

l

Logic 1 when V

in

 

 8V.

l

Logic 0 when V

in

 

 2V.

IDM input voltages between 2 and 8 volts are indeterminate and cannot be guaranteed.

Pin No.

Description

Input/Output

1

Front left window down

Output

2

Front right window down

Output

3

Fuel flap release

Output

4

Front left window up

Output

5

Earth

-

6

Front right window up

Output

7

Battery power supply

Input

Description

Signal type

System

Inertia switch

Digital

Locking/ Unlocking/ Alarm

Side lamps

Digital

Exterior lighting

Headlamp dipped beam

Digital

Exterior lighting

Headlamp main beam daylight running lamps

Analogue

Exterior lighting

RH direction indicators current sense

Analogue

Direction indicators/ Hazards/ Alarm

LH direction indicators current sense

Analogue

Direction indicators/ Hazards/ Alarm

Front wiper park sense

Digital

Wipers and washers

 

 

 

 

 

 

 

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