Troubleshooting car Land Rover Discovery 1
Diagnostic equipment
Land Rover vehicles use many electronic devices and instruments that ensure the operation of individual vehicle systems at a modern technical level. For diagnostics of electronic control systems, the...
Land Rover vehicles use many electronic devices and instruments that ensure the operation of individual vehicle systems at a modern technical level. For diagnostics of electronic control systems, the...
Engine — Troubleshooting
Extraneous noises A. The noise from a gas breakthrough in the exhaust system is identified with almost no difficulty. B. Noise from the operation of attachments is identified after removing the...
Extraneous noises A. The noise from a gas breakthrough in the exhaust system is identified with almost no difficulty. B. Noise from the operation of attachments is identified after removing the...
Clutch — troubleshooting
For the clutch to function properly, the following conditions must be met: a) the primary shaft of the gearbox must rotate freely in the crankshaft bearing b) the driven clutch disc must move freely...
For the clutch to function properly, the following conditions must be met: a) the primary shaft of the gearbox must rotate freely in the crankshaft bearing b) the driven clutch disc must move freely...
Manual transmission
Symptom: spontaneous disengagement of any gear. 1. Check the condition and reliability of the engine and gearbox mounts. 2. Check the shift lever adjustments. 3. Check the shift axle joint, the...
Symptom: spontaneous disengagement of any gear. 1. Check the condition and reliability of the engine and gearbox mounts. 2. Check the shift lever adjustments. 3. Check the shift axle joint, the...
Automatic transmission
Symptom 1: Twitching when moving and high-frequency sounds. Malfunction: low fluid level or clogged filter. Symptom 2: No reverse gear. Move the selector to position D: no movement: transition to...
Symptom 1: Twitching when moving and high-frequency sounds. Malfunction: low fluid level or clogged filter. Symptom 2: No reverse gear. Move the selector to position D: no movement: transition to...
Cardan shaft
Symptom: harsh vibration. 1. Check the condition of the shaft joints, the condition of the length compensator splines and the correct installation of the flanges. 2. If the condition of the...
Symptom: harsh vibration. 1. Check the condition of the shaft joints, the condition of the length compensator splines and the correct installation of the flanges. 2. If the condition of the...
Steering system
Symptom 1: "Heavy" steering wheel (high steering wheel turning efforts). 1. Check: the fluid level in the power steering pump reservoir; pump belt tension; lack of air in the power steering system....
Symptom 1: "Heavy" steering wheel (high steering wheel turning efforts). 1. Check: the fluid level in the power steering pump reservoir; pump belt tension; lack of air in the power steering system....
Diagnostics of fuel injection systems
1 - crankshaft position sensor, 2 - diagnostic connector (on the right under the dashboard), 3 - electronic control unit (right), 4 - engine management system relay (right), 5 - coolant temperature...
1 - crankshaft position sensor, 2 - diagnostic connector (on the right under the dashboard), 3 - electronic control unit (right), 4 - engine management system relay (right), 5 - coolant temperature...
Self-diagnosis — general information
The electronic control unit has a built-in self-diagnostic unit. If a fault is detected, the fault indicator light will light. In the event of sensor failure, the electronic unit operates in...
The electronic control unit has a built-in self-diagnostic unit. If a fault is detected, the fault indicator light will light. In the event of sensor failure, the electronic unit operates in...
Engine adjustments
Engine and systems condition The engine is warmed up to operating temperature. The transmission is warmed up to operating temperature. The ignition system is in good condition. The air filter is in...
Engine and systems condition The engine is warmed up to operating temperature. The transmission is warmed up to operating temperature. The ignition system is in good condition. The air filter is in...
Idle speed
Adjustment - Figures 1 and 2 Technical conditions Setting speed 525±25 rpm Manual transmission Air conditioner off 700±28 rpm Air conditioner on 750±28 rpm Automatic transmission selector position...
Adjustment - Figures 1 and 2 Technical conditions Setting speed 525±25 rpm Manual transmission Air conditioner off 700±28 rpm Air conditioner on 750±28 rpm Automatic transmission selector position...
CO emission level
Adjustment Technical conditions All models 0.5-1% - at the exit Transmission Crankshaft speed Mechanical 700±28 rpm Automatic 700±35 rpm The concentration of CO in the exhaust gases is regulated by...
Adjustment Technical conditions All models 0.5-1% - at the exit Transmission Crankshaft speed Mechanical 700±28 rpm Automatic 700±35 rpm The concentration of CO in the exhaust gases is regulated by...
Initial position of the throttle valve
Adjustment - Figure 3 and 4 Technical conditions Initial position of the throttle valve Difference "A" - "B" Maximum 0.5 mm
Adjustment - Figure 3 and 4 Technical conditions Initial position of the throttle valve Difference "A" - "B" Maximum 0.5 mm
Fuel system — fuel pressure
Check - Figure 5 Technical conditions System pressure System status Meaning In the system The vacuum is disabled 2.39-2.67 bar Residual pressure In 60 seconds less by 0.7 bar Note: To prevent the...
Check - Figure 5 Technical conditions System pressure System status Meaning In the system The vacuum is disabled 2.39-2.67 bar Residual pressure In 60 seconds less by 0.7 bar Note: To prevent the...
Fuel temperature sensor
Check - Figure 8 Technical conditions Temperature Resistance 0°C 5700-5900 Ohm 20°C 2400-2600 Ohm 40°C 1100-1300 Ohm 60°C 500-700 Ohm 80°C 300-400 Ohm 100°C 150-200 Ohm Make sure the ignition is off....
Check - Figure 8 Technical conditions Temperature Resistance 0°C 5700-5900 Ohm 20°C 2400-2600 Ohm 40°C 1100-1300 Ohm 60°C 500-700 Ohm 80°C 300-400 Ohm 100°C 150-200 Ohm Make sure the ignition is off....
Throttle position sensor
Check - Figure 9 Technical conditions Contacts Throttle valve Voltage 2 and mass Closed 0.09-0.55 V 2 and mass Fully open 4.2-4.9 V Make sure the ignition is off. Without disconnecting the sensor's...
Check - Figure 9 Technical conditions Contacts Throttle valve Voltage 2 and mass Closed 0.09-0.55 V 2 and mass Fully open 4.2-4.9 V Make sure the ignition is off. Without disconnecting the sensor's...
Air flow meter
Checking the supply voltage - Figure 10 Technical conditions Contacts Position Voltage 5 and mass Ignition ON battery Make sure the ignition is off. Disconnect the air flow meter electrical...
Checking the supply voltage - Figure 10 Technical conditions Contacts Position Voltage 5 and mass Ignition ON battery Make sure the ignition is off. Disconnect the air flow meter electrical...
Idle air control valve
Resistance Check - Figure 11 Technical conditions Contacts Resistance Ai B 40-60 Ohm С и D 40-60 Ohm Make sure the ignition is off. Disconnect the valve electrical connector. Measure the resistance...
Resistance Check - Figure 11 Technical conditions Contacts Resistance Ai B 40-60 Ohm С и D 40-60 Ohm Make sure the ignition is off. Disconnect the valve electrical connector. Measure the resistance...
Ignition system — spark formation
Check - Figure 12 Note: To prevent damage to the catalytic converter when cranking the engine, disconnect the injector connectors. Make sure the ignition is off. Remove one high-voltage wire from the...
Check - Figure 12 Note: To prevent damage to the catalytic converter when cranking the engine, disconnect the injector connectors. Make sure the ignition is off. Remove one high-voltage wire from the...
Ignition timing and cylinder firing order
Checking and adjusting - Figures 13 and 14 Technical conditions Engine model Ignition advance angle, degrees, before TDC/rpm 35D/36D 5±1 / 800 Discovery 5±1 / 800 40D 8±1 / 800 Cylinder firing order...
Checking and adjusting - Figures 13 and 14 Technical conditions Engine model Ignition advance angle, degrees, before TDC/rpm 35D/36D 5±1 / 800 Discovery 5±1 / 800 40D 8±1 / 800 Cylinder firing order...
Ignition coil
Checking the supply voltage - Figure 15 Technical conditions Contacts State Voltage 15 and mass Ignition ON battery Make sure the ignition is off. Turn on the ignition. Measure the voltage between...
Checking the supply voltage - Figure 15 Technical conditions Contacts State Voltage 15 and mass Ignition ON battery Make sure the ignition is off. Turn on the ignition. Measure the voltage between...
Ignition system amplifier
Note: The ignition system amplifier is located on the high voltage distributor. Checking the supply voltage - Figure 17 Technical conditions Contacts Position Voltage 3 and mass Ignition ON battery...
Note: The ignition system amplifier is located on the high voltage distributor. Checking the supply voltage - Figure 17 Technical conditions Contacts Position Voltage 3 and mass Ignition ON battery...
Ignition system resistor
Check - Figure 20 Technical conditions Contacts Position Voltage 39 and weight Ignition ON 8.5-10.5 V Make sure the ignition is off. Disconnect the electrical connector from the electronic control...
Check - Figure 20 Technical conditions Contacts Position Voltage 39 and weight Ignition ON 8.5-10.5 V Make sure the ignition is off. Disconnect the electrical connector from the electronic control...
Coolant temperature sensor
Check - Figure 21 Technical conditions Temperature Resistance 0°C 5700-5900 Ohm 20°C 2400-2600 Ohm 40°C 1100-1300 Ohm 60°C 500-700 Ohm 80°C 300-400 Ohm 100°C 150-200 Ohm Make sure the ignition is...
Check - Figure 21 Technical conditions Temperature Resistance 0°C 5700-5900 Ohm 20°C 2400-2600 Ohm 40°C 1100-1300 Ohm 60°C 500-700 Ohm 80°C 300-400 Ohm 100°C 150-200 Ohm Make sure the ignition is...
Crankshaft position sensor
Note: The crankshaft position sensor is built into the high voltage distributor. Resistance Check - Figure 22 Technical conditions Resistance 2000-5000 Ohm Make sure the ignition is off. Remove the...
Note: The crankshaft position sensor is built into the high voltage distributor. Resistance Check - Figure 22 Technical conditions Resistance 2000-5000 Ohm Make sure the ignition is off. Remove the...
Heated oxygen sensor
Signal Check - Figure 24 Technical conditions Contacts Voltage Fuel-air mixture 2 and mass Pulsating 0.5-1.0 V Normal 2 and mass 0.05 V Poor thing 2 and mass 1.0 V Rich Warm up the engine to...
Signal Check - Figure 24 Technical conditions Contacts Voltage Fuel-air mixture 2 and mass Pulsating 0.5-1.0 V Normal 2 and mass 0.05 V Poor thing 2 and mass 1.0 V Rich Warm up the engine to...
Oxygen sensor heater
Checking the supply voltage - Figure 25 Technical conditions Contacts Voltage 1 and mass battery Make sure the ignition is off. Disconnect the oxygen sensor electrical connector. Start the engine at...
Checking the supply voltage - Figure 25 Technical conditions Contacts Voltage 1 and mass battery Make sure the ignition is off. Disconnect the oxygen sensor electrical connector. Start the engine at...
Fuel vapor canister valve
Checking the supply voltage - Figure 26 Technical conditions Contacts Voltage 1 and mass battery Make sure the ignition is off. Disconnect the valve electrical connector. Start the engine at idle...
Checking the supply voltage - Figure 26 Technical conditions Contacts Voltage 1 and mass battery Make sure the ignition is off. Disconnect the valve electrical connector. Start the engine at idle...
Engine management system relay
Checking the supply voltage - Figure 28 Technical conditions Contacts State Voltage 30 and mass Ignition OFF battery 86 and mass Ignition OFF battery Make sure the ignition is off. Remove the relay....
Checking the supply voltage - Figure 28 Technical conditions Contacts State Voltage 30 and mass Ignition OFF battery 86 and mass Ignition OFF battery Make sure the ignition is off. Remove the relay....
Fuel pump relay
Checking the supply voltage - Figure 28 Technical conditions Contacts State Voltage 30 and mass Ignition OFF battery 86 and mass Ignition ON battery Make sure the ignition is off. Remove the relay....
Checking the supply voltage - Figure 28 Technical conditions Contacts State Voltage 30 and mass Ignition OFF battery 86 and mass Ignition ON battery Make sure the ignition is off. Remove the relay....
Electronic control unit
Note: After checking the electronic control unit, the fault codes must be cleared. Refer to the "Self-Diagnostics" section. Note: Due to the small size of the electronic unit terminals, we recommend...
Note: After checking the electronic control unit, the fault codes must be cleared. Refer to the "Self-Diagnostics" section. Note: Due to the small size of the electronic unit terminals, we recommend...
Park/Neutral Position Switch — Automatic Transmission
Functionality check - Figure 32 Technical conditions Contacts Selector position Voltage 34 and mass Parking ("P") 0-1.5 V 34 and mass Neutral ("N") 0-1.5 V 34 and mass Other provisions 2.5-5.0 V Make...
Functionality check - Figure 32 Technical conditions Contacts Selector position Voltage 34 and mass Parking ("P") 0-1.5 V 34 and mass Neutral ("N") 0-1.5 V 34 and mass Other provisions 2.5-5.0 V Make...
Neutral Position Resistance — Manual Transmission
Check - Figure 32 Technical conditions Contacts Lever position Voltage 34 and mass Besides "N" 1.5-3.5 V Make sure the ignition is off. Without disconnecting the electrical connector of the...
Check - Figure 32 Technical conditions Contacts Lever position Voltage 34 and mass Besides "N" 1.5-3.5 V Make sure the ignition is off. Without disconnecting the electrical connector of the...
Vehicle speed sensor
Functionality check - Figure 34 Technical conditions Contact Operation Voltage 6 and mass Moving a car Pulsating 0 - battery B Make sure the ignition is off. Without disconnecting the electrical...
Functionality check - Figure 34 Technical conditions Contact Operation Voltage 6 and mass Moving a car Pulsating 0 - battery B Make sure the ignition is off. Without disconnecting the electrical...
Inertia fuel switch
Functionality check - Figure 35 Technical conditions Contacts Position Resistance 1 and 3 The button is released Infinity 1 and 3 The button is pressed Zero Make sure the ignition is off. Disconnect...
Functionality check - Figure 35 Technical conditions Contacts Position Resistance 1 and 3 The button is released Infinity 1 and 3 The button is pressed Zero Make sure the ignition is off. Disconnect...
Electronic control unit coding plug
Functionality check - Figure 36 Technical conditions Contacts Resistance 5 and 27 3700-4100 Ohm Make sure the ignition is off. Disconnect the electrical connector from the electronic control unit....
Functionality check - Figure 36 Technical conditions Contacts Resistance 5 and 27 3700-4100 Ohm Make sure the ignition is off. Disconnect the electrical connector from the electronic control unit....
Conventional designations
Code Element A35 Electronic engine control unit A52 Ignition system amplifier A95 Electronic control unit for the cooling system fan B24 Coolant temperature sensor B30 Air flow meter B31 Fuel...
Code Element A35 Electronic engine control unit A52 Ignition system amplifier A95 Electronic control unit for the cooling system fan B24 Coolant temperature sensor B30 Air flow meter B31 Fuel...
Self-diagnosis, list No. 12
General information The electronic control unit provides self-diagnosis of the system. When a malfunction occurs, the "check engine" indicator lights up on the instrument panel. If the sensors fail,...
General information The electronic control unit provides self-diagnosis of the system. When a malfunction occurs, the "check engine" indicator lights up on the instrument panel. If the sensors fail,...
Table of error codes
Code Malfunction 12 Air flow meter 14 Coolant temperature sensor 15 Fuel temperature sensor 17 Throttle position sensor 18 Throttle position sensor 19 Throttle position sensor 21 Electronic control...
Code Malfunction 12 Air flow meter 14 Coolant temperature sensor 15 Fuel temperature sensor 17 Throttle position sensor 18 Throttle position sensor 19 Throttle position sensor 21 Electronic control...
Troubleshooting Algorithm #8
Malfunctions Sequence of checking nodes The engine won't start Grounding the engine and battery. Fuel filter, fuel pump. Tightness of the intake system and vacuum hoses. Fuses, fuel pump, engine...
Malfunctions Sequence of checking nodes The engine won't start Grounding the engine and battery. Fuel filter, fuel pump. Tightness of the intake system and vacuum hoses. Fuses, fuel pump, engine...
General manufacturer recommendations for maintenance of Land Rover vehicles
General manufacturer recommendations for the maintenance of Land Rover vehicles when operating in Russia under heavily loaded conditions (Off Road and Urban) Every 5,000 km Changing engine oil and...
General manufacturer recommendations for the maintenance of Land Rover vehicles when operating in Russia under heavily loaded conditions (Off Road and Urban) Every 5,000 km Changing engine oil and...
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