Land Rover Discovery: Engine - Ingenium i4 2.0l Diesel / Diagnosis and Testing

PRINCIPLES OF OPERATION

For a detailed description of the Ingenium 2.0L Diesel Engine, refer to the relevant Description and Operation section in the workshop manual. REFER to: Engine (303-01B Engine - INGENIUM I4 2.0L Diesel, Description and Operation).

INSPECTION AND VERIFICATION

CAUTION:

Diagnosis by substitution from a donor vehicle is NOT acceptable.

Substitution of control modules does not guarantee confirmation of a fault, and may also cause additional faults in the vehicle being tested and/or the donor vehicle.

NOTES:

• If a control module or a component is suspect and the vehicle remains under manufacturer warranty, refer to the Warranty Policy and Procedures manual, or determine if any prior approval programme is in operation, prior to the installation of a new module/component.
• When performing voltage or resistance tests, always use a digital multimeter accurate to three decimal places, and with an up-todate calibration certificate. When testing resistance always take the resistance of the digital multimeter leads into account.
• Check and rectify basic faults before beginning diagnostic routines involving pinpoint tests.

1. Verify the customer concern
2. Visually inspect for obvious signs of damage and system integrity

Visual Inspection

3. If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step
4. If the cause is not visually evident, verify the symptom and refer to the Symptom Chart, alternatively check for Diagnostic Trouble Codes (DTCs) and refer to the DTC Index
5. Check DDW for open campaigns. Refer to the corresponding bulletins and SSMs which may be valid for the specific customer complaint and carry out the recommendations as required

SYMPTOM CHARTS

FLUID LEAKS

SYMPTOM:

Coolant leak - External

POSSIBLE CAUSES:

• Cooling system hose(s) damaged
• Expansion tank damaged
• Radiator damaged
• Casings damaged
• Seal(s) leaking

ACTION:

• Refer to the relevant section of the workshop manual and check the cooling system. Rectify as necessary

SYMPTOM:

Coolant leak - Internal

NOTE:

This may be indicated by the emission of white smoke from the exhaust

POSSIBLE CAUSES:

• Seal(s) leaking
• Casings damaged

ACTION:

• Check for cross contamination of the coolant and the engine oil. Check for exhaust gases emissions through the expansion tank. Refer to the relevant section of the workshop manual and check the cooling system. Rectify as necessary

SYMPTOM:

Engine overheats

POSSIBLE CAUSES:

• Insufficient coolant
• Insufficient oil
• Pressure cap fault
• Thermostat not opening
• Variable coolant pump failure
• Cooling fan failure
• Active air grill shutter failure

ACTION:

• Check the coolant level and condition.

  Perform a cooling system pressure test.

  Rectify any leaks as necessary. Check the thermostat and rectify as necessary.

  Check the cooling fan operation - Ensure that the cooling fan rotates freely. Check for obstructions to the air flow through the radiator. Using the Jaguar Land Rover approved diagnostic equipment, check the operation of the active grill air shutter. Rectify as necessary

SYMPTOM:

Engine takes too long to reach normal operating temperature

POSSIBLE CAUSES:

• Thermostat stuck open

ACTION:

• Check the operation of the thermostat.

  Rectify as necessary

SYMPTOM:

Oil leaks - External

POSSIBLE CAUSES:

• Seal(s) leaking
• Oil pipes leaking
• Oil filter leaking
• Oil cooler leaking
• Casings damaged
• Crankcase ventilation system blocked/leaking
• Piston ring blow-by

ACTION:

• Clean and confirm the area of the leak.

  Check the visual condition of oil carrying components. Refer to the relevant section of the workshop manual and check the crankcase ventilation system. Perform a compression test: REFER to: Cylinder Compression Test - INGENIUM I4 2.0L Diesel (303-00 Engine System - General Information, General Procedures).

SYMPTOM:

Oil leaks - Internal (leaks into the coolant or the combustion chamber)

NOTE:

This may be indicated by the emission of blue smoke from the exhaust

POSSIBLE CAUSES:

• Seal(s) leaking
• Casings damaged
• Valve guides worn
• Cylinder bores / piston rings worn
• Piston rings broken

ACTION:

Check for traces of oil in the coolant.

Check for evidence of oil in the combustion chambers (deposits on the glow plugs, etc). Confirm oil consumption and vehicle usage with the owner/driver. Perform an oil consumption test: GO to Pinpoint Test A.

NOISE, VIBRATION AND HARSHNESS

NOTE:

As the checks suggested here are open to interpretation, they should be used as a guide only. Descriptions of noises, etc, are in general terms, so depend on a degree of experience on the part of the technician.

SYMPTOM:

Rattle/ticking from top of engine

POSSIBLE CAUSES:

• Valve gear noise
• Camshaft bearing noise
• Camshaft chain noise
• Tensioner noise
• Vacuum pump noise
• High pressure fuel pump noise

ACTION:

• Perform an engine oil pressure test. Check the operation of the hydraulic tappets and the condition of the camshaft. Check the camshaft bearings, chains and tensioners. Check the vacuum pump.

  Check the high pressure fuel pump. Rectify as necessary

SYMPTOM:

Squeaking, creaking or squealing from front of engine

POSSIBLE CAUSES:

• Primary drive belt
• Primary drive belt tensioner
• Primary drive belt driven components

ACTION:

• Refer to the relevant section of the workshop manual and check the primary drive belt. Rectify as necessary

SYMPTOM:

Whine, slap or growl from front of engine

POSSIBLE CAUSES:

• Primary drive belt
• Primary drive belt tensioner
• Primary drive belt driven components

ACTION:

• Refer to the relevant section of the workshop manual and check the primary drive belt. Rectify as necessary

SYMPTOM:

Knock from lower half of engine (often worse with a cold engine)

POSSIBLE CAUSES:

• Piston slap
• Piston pin noise
• Connecting rod bearing noise

ACTION:

• Perform an engine oil pressure test. Check pistons, cylinder bores, piston pins and connecting rod bearings for excessive wear. Rectify as necessary

SYMPTOM:

Knock or rumble from lower half of engine (often worse on overrun)

POSSIBLE CAUSES:

• Main bearing noise

ACTION:

• Perform an engine oil pressure test. Check connecting rod bearing for excessive wear. Rectify as necessary

SYMPTOM:

Misfire or rough running

POSSIBLE CAUSES:

• Engine management system
• Fuel charging and controls
• Exhaust gas recirculation system
• Valves burnt or sticking
• Valve guides worn
• Cylinder bores / piston rings worn
• Piston rings broken
• Piston rings broken

ACTION:

Refer to the relevant section of the workshop manual and check the engine management system, fuel charging and controls and the exhaust gas recirculation system. Perform an engine oil pressure test. Check for excessive wear in engine components. Rectify as necessary

INGENIUM I 4 2 . 0L DIESEL - COMPRESSION TEST

For a detailed description of the cylinder compression test, refer to the relevant powertrain section in the workshop manual. Refer to: REFER to: Cylinder Compression Test - INGENIUM I4 2.0L Diesel (303-00 Engine System - General Information, General Procedures).

INGENIUM I 4 2 . 0L DIESEL - ENGINE OIL PRESSURE CHECK

Engine oil pressure can be monitored by using the manufacturer approved diagnostic tool. View signal - D901 Oil Pressure Switch - Contact: Dealer Technical Support (DTS) for oil pressure issues

PINPOINT TESTS

NOTE:

Where reference is made to 'suitable equipment', this refers to standard workshop equipment. Refer to the operating instructions for your own equipment when performing any tests.

NOTE:

Oil consumption will vary, depending on a number of factors. New engines will normally use more oil than 'run-in' engines, although a guideline would be to expect 16,000 Km (10,000 miles) per liter.

DTC INDEX

For a list of Diagnostic Trouble Codes (DTCs) that could be logged on this vehicle, please refer to Section 100-00. REFER to: Diagnostic Trouble Code Index - INGENIUM I4 2.0L Diesel, DTC: Engine Control Module (ECM) B10A2-07 to P034B-76 (100-00 General Information, Description and Operation).

Engine - Ingenium i4 2.0l Diesel / Specifications

Lubricants, Fluids, Sealers and Adhesives

Capacities

General Specification

Main bearing Selection - Eco spec

Main bearing Selection - Mid spec

Cylinder Head Gasket Selection

Torque Specifications

* New nuts/bolts must be installed

A = refer to procedure for correct torque sequence

Glow PlugsEngine Cooling - Ingenium i4 2.0l Diesel Charge Air Radiator (G1879559) / Removal and Installation

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