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Home >> Land Rover >> 2003 >> Range Rover >> Repair and Diagnosis >> Transmission >> Transfer Case >> Description >> Transfer Box Ecu >> Default/Limp Home Strategy
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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

Pin No. Description Input/Output
1-6 Not Used -
7 Neutral Request (When Fuse 37 Installed) Input
8 High/Low Range Switch Input
9-12 Not Used -
13 CAN Bus Low Input/Output
14 Not Used -
15 Ignition Power Supply Input
16 Not Used -
17 & 18 Not Used -
19 Diagnostic ISO 9141 K Line Bus Input/Output
20-25 Not Used -
26 CAN Bus High Input/Output
27-52 Not Used -
TRANSFER BOX HARNESS CONNECTOR C1854 PIN DETAILS

Pin No. Description Input/Output
1-5 Not used -
6 Actuator Potentiometer 5 Volt Reference Voltage Output
7-9 Not Used -
10 Actuator Potentiometer Signal Input
11-16 Not Used -
17 Actuator Potentiometer Ground -
18-40 Not Used -
TRANSFER BOX HARNESS CONNECTOR C1855 PIN DETAILS

Pin No. Description Input/Output
1 Not Used -
2 Ground -
3 Ground -
4 Motor Supply/Ground A Input/Output
5 Permanent Battery Power Supply Input
6 Permanent Battery Power Supply Input
7 Motor Supply/Ground A Input/Output
8 Motor Supply/Ground B Input/Output
9 Motor Supply/Ground B Input/Output