LEMON Manuals
: Even more car manuals for everyone: 1960-2025
Home
>>
Land Rover
>>
1989
>>
Range Rover Base
>>
Repair and Diagnosis
>>
Engine Performance
>>
System
>>
Engine Controls - System & Component Testing
April 5, 2026:
LEMON Manuals is launched!
Read the announcement.
Engine Controls - System & Component Testing
Expand All (for easy ctrl-f)
Collapse All
Introduction
Notes
Continuity Test Procedure (1987-88)
Continuity Test Procedure (1989)
Continuity Test Procedure (1990-91)
Computerized Engine Controls
Engine Control Module
Notes
Power Circuits
Tune Select Resistor Test (1990-91)
Engine Sensors & Switches
A/C Switch (1989-91)
Engine Coolant Temperature Sensor
Fuel Temperature Sensor
Heated Oxygen (Lambda) Sensor (1989-91)
Heated Oxygen Sensor (Lambda Sensor) Heater Coil
Mass Airflow Sensor
Road Speed Sensor
Throttle Position Sensor
Modules, Motors, Relays & Solenoids
Fuel Pump Relay
Main Relay
Fuel Systems
Fuel Delivery
Notes
Depressurizing Procedure (1987-88)
Depressurizing Procedure (1989-91)
Fuel Pump Circuit
Fuel Pressure Check (1990-91)
Fuel Control
Notes
Fuel Injectors
Fuel Injector Leakage
Fuel Injector Volume
Idle Control Systems
Air By-Pass Valve
Ignition Systems
Notes
Ignition System
Notes
Test 1
Test 2
Test 3
Test 4
Test 5
Test 6
Test 7
Timing Control Systems
Notes
Engine Speed Signal
Vacuum Delay Valve
Valve Air Flow Check
External Leakage Check
Emission Systems & Subsystems
Fuel Expansion Tank/Flow/Rollover Valve (1987-90)
Purge Control Solenoid Valve (1989-91)
Fuel Evaporative System Inspection (1991)
Notes
Equipment Required For Testing
Test Procedure
Miscellaneous Controls
Notes
A/C Clutch Relay (1989-91)
A/C Condenser Fan (1989-91)
A/C Condenser Fan Timer (1989-91)
A/C Thermostat Input (1989-91)
Automatic Transmission
Gear Switch
Front Window Defogger (1989-91)