Freelander System Description and Operation
AUTOMATIC GEARBOX - JATCO
DESCRIPTION AND OPERATION
44-31
Shift Interlock Solenoid
The shift interlock solenoid is controlled by the EAT ECU. When the ignition switch is in position II, with the selector
lever in the Park position, the EAT ECU supplies a power feed to the shift interlock solenoid. The shift interlock
solenoid energises and extends a pin into the selector lever, locking the lever in Park.
While the selector lever is in Park, when the EAT ECU senses the brake pedal being pressed, it de-energises the shift
interlock solenoid and the solenoid pin retracts, allowing the selector lever to be moved. When the selector lever is in
any position other than Park, the shift interlock solenoid remains de-energised after the brake pedal is released, and
the lever is free to be moved through the remainder of the range.
LED Module
The LED module is located in the selector lever surround and is secured with two integral clips. The module is
connected to the main harness by a 12 pin connector (C0675).
The LED module illuminates the applicable LED for the P, R, N, D, 4, 2, 1 and S/M positions. When the side lamps
are switched on, all the LED's are illuminated at a low intensity, with the selected gear lever position LED illuminated
at a higher intensity.
Selector Cable
The selector cable is a Bowden type cable that connects the selector lever to an input lever on the gearbox.
A 'C' clip secures the outer cable to the selector lever assembly; the gearbox end of the outer cable is secured to a
bracket on the gearbox by an integral clip. The inner cable is adjustable at the connection with the gearbox input lever.
Brake Switch
The brake switch is located on the pedal box below the fascia. The EAT ECU uses this switch to monitor brake pedal
application status. The information is input to pin 43 of the EAT ECU on a hardwired connection from the switch.
The EAT ECU can allow the gearbox to apply more engine braking therefore slowing down the vehicle in a shorter
distance and reducing brake pad wear. The EAT ECU achieves engine braking by applying the low and reverse
clutches.
The brake switch can fail in the following ways:
l
Switch open circuit
l
Short circuit to 12 or 5 volts
l
Short circuit to earth.
In the event of a brake switch signal failure, extra gearbox braking will not occur and the shift lock solenoid (if fitted)
will not function.