Switches and Sensors

Switches And Sensors

Oil temperature warning lamp switch
An oil temperature switch is fitted to V8 engine models. In the event of the transfer box oil approaching maximum recommended working temperature of 145 °C (293 °F), the switch will close and a warning lamp in the instrument pack will be illuminated.







Neutral sensor
A neutral sensor is fitted for North America and Japan. The sensor is connected to the BCU and is normally in the open position. The sensor provides an earth path for the BCU which then interprets the signal and activates an audible warning generated by the IDM if neutral is selected on the transfer box when the ignition is on.







High/low detect switch
A high/low detect switch is fitted in the front output housing and connects to earth when low is selected. The switch is connected to the engine ECM, the SLABS ECU and the BCU. The purpose of the switch is to enable selection of the hill descent feature and to modify the engine fuelling and automatic gearbox gearshift maps stored within the respective ECM's and ECU's.







Differential lock warning lamp switch
A differential lock warning lamp switch connected to the SLABS ECU and operated by movement of the selector fork and shaft is screwed into the top of the output housing. The switch connects to earth when the differential lock is engaged.







Differential lock warning lamp
The differential lock warning lamp is located in the instrument pack and provides a warning to the driver when the ignition is switched on that the differential lock is engaged. With the lock engaged, the traction control and electronic brake distribution warning lamps will also be illuminated. Disengagement of the differential lock should be carried out with the ignition switched off. The warning lamps must be extinguished when the ignition is switched on again.

Transfer box interlock solenoid
An interlock solenoid is fitted for North America and Japan. The solenoid is located on the top of the transfer box main casing on vehicles up to 04 model year or on the selector lever assembly on vehicles from 04 model year. The solenoid is connected to the transfer box relay which, in turn, is controlled by the IDM. The purpose of the solenoid is to prevent neutral being selected on the transfer box when the ignition key is removed, thereby locking the box in either high or low ratio.