Transfer Box ECU (page 2 of 2)

TRANSFER BOX

41-18

DESCRIPTION AND OPERATION

Default/Limp Home Strategy
If a fault occurs with the transfer box, the transfer box ECU or one of the required input signals, i.e.; road speed signal, 
the ECU records an error code and the transfer box low range 'mountain' symbol in the instrument pack flashes 
permanently.

As a default setting, the ECU will attempt to engage high or low range in order to allow the vehicle to be driven to a 
Land Rover dealer for repair. To ensure a range is engaged, the ignition must be switched off and then on again (timed 
shift performs this without ignition cycling). This causes the ECU to power the actuator and engage the previously 
selected range.

Transfer Box Harness Connector C1319 Pin Details

Transfer Box Harness Connector C1854 Pin Details

Transfer Box Harness Connector C1855 Pin Details

Pin No.

Description

Input/Output

1 to 6

Not used

–

7

Neutral request (when fuse 37 installed)

Input

8

High/Low range switch

Input

9 to 12

Not used

–

13

CAN bus low

Input/Output

14

Not used

–

15

Ignition power supply

Input

16

Not used

–

17 and 18

Not used

–

19

Diagnostic ISO 9141 K line bus

Input/Output

20 to 25

Not used

–

26

CAN bus high

Input/Output

27 to 52

Not used

–

Pin No.

Description

Input/Output

1 to 5

Not used

–

6

Actuator potentiometer 5 volt reference voltage

Output

7 to 9

Not used

–

10

Actuator potentiometer signal

Input

11 to 16

Not used

–

17

Actuator potentiometer ground

–

18 to 40

Not used

–

Pin No.

Description

Input/Output

1

Not used

–

2

Ground

–

3

Ground

–

4

Motor A supply/ground

Input/Output

5

Permanent battery power supply

Input

6

Permanent battery power supply

Input

7

Motor A supply/ground

Input/Output

8

Motor B supply/ground

Input/Output

9

Motor B supply/ground

Input/Output