LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Land Rover >> 1994 >> Defender 90 >> Repair and Diagnosis >> Electrical >> Component Locations >> Electrical Component Locator >> Control Units
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Control Units

CONTROL UNITS

Component Component Location
A/C Diode Pack (Z101) Right Side, Behind Footwell Trim Panel. See Figure .
A/C Thermostat Unit (Z102) Behind Passenger's Side Of Dash. See Figure .
ABS Booster Unit (Z103) Driver's Rear Corner Of Engine Compartment. See Figure .
ABS Pressure Switch Unit (Z104) Driver's Side Of Engine Compartment. See Figure .
ABS ECU (Z108) Beneath Left Front Seat. See Figure .
Air Suspension ECU (Z165) Beneath Right Front Seat. See Figure .
Audible Warning Unit (Z109) Left Side, Above Lower Dash Panel. See Figure .
Blower Resistor Unit (Z112) Inside Heater Unit, Beneath Center Of Dash. See Figure .
Central Locking Control Unit (Z113) Near Steering Column, Above Lower Dash Panel. See Figure .
Cruise Control ECU (Z121) Near Steering Column, Above Lower Dash Panel. See Figure .
Daytime Running Lights Control Unit (Z122) Left Side, Behind Footwell Trim. See Figure .
Dim Dip Control Unit (Z124) Right Side, Above Lower Dash Panel. See Figure .
Emissions Maintenance Reminder Unit (Z126) Beneath Right Front Seat. See Figure .
Engine Control Module (ECM) (Z132) Beneath Right Front Seat. See Figure .
Engine Oil Level Monitor Unit (Z127) Behind Left Side Of Dash Above Lower Dash Panel. See Figure .
Fan Control Module (Z118) Beneath Right Front Seat. See Figure .
Flasher Unit (Z128) Driver's Side, Above Lower Dash Panel. See Figure .
Front Wipe Delay Unit (Z131) Near Steering Column, Above Lower Dash Panel. See Figure .
Fuel Injection Fault Display Unit (Z133) Beneath Right Front Seat. See Figure .
Fuel Tank Unit (Z134) Inside Top Of Fuel Tank. See Figure .
Headlight Wash Timer Unit (Z136) Passenger's Rear Corner Of Engine Compartment. See Figure .
Heated Front Window Timer Unit (Z137) Right Side, Behind Footwell Trim Panel. See Figure .
Ignition Control Module (Z139) Front Center Of Engine, Attached To Distributor. See Figure .
Interior Lights Delay Unit (Z144) Near Steering Column, Above Lower Dash Panel. See Figure .
Left Headlight Level Unit (Z145) Behind Left Headlight.
Memory Seat ECU (Z146) Underside Of Driver's Seat. See Figure .
Power Window ECU (Z147) In Center Console, Beneath Cubby Box Liner. See Figure .
Rear Wiper Delay Unit (Z154) Near Steering Column Above Lower Dash Panel. See Figure .
Right Headlight Level Unit (Z155) Behind Right Headlight.
Seatbelt & Speed Warning Unit (Z156) Left Side, Above Lower Dash Panel. See Figure .
Speed Trip Module (Z164) Right Side, Behind Footwell Trim Panel. See Figure .
Sunroof Control Unit (Z162) Front Center Of Roof. See Figure .
Theft Alarm Unit (Z163) Behind Driver's Side Of Dash. See Figure .
Warning Lamps Check Unit (Z161) Left Side, Above Lower Dash Panel. See Figure .