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

PRINCIPLES OF OPERATION

For a detailed description of the Engine Emission Control, refer to the relevant Description and Operation section in the workshop manual. REFER to: Engine Emission Control (303-08B Engine Emission Control - 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 CHART

SYMPTOM:

Engine difficult to start

POSSIBLE CAUSES:

• Exhaust gas recirculation system fault

ACTION:

Using the Jaguar Land Rover approved diagnostic equipment, perform routine - Inline diagnostic unit 2 diagnostic test - Exhaust gas recirculation valve.

Clear the DTCs and retest

SYMPTOM:

Engine idle erratic

POSSIBLE CAUSES:

• Exhaust gas recirculation system fault

ACTION:

• Using the Jaguar Land Rover approved diagnostic equipment, perform routine - Inline diagnostic unit 2 diagnostic test - Exhaust gas recirculation valve.

  Clear the DTCs and retest

SYMPTOM:

Lack of power when accelerating

POSSIBLE CAUSES:

• Exhaust gas recirculation system fault

ACTION:

• Using the Jaguar Land Rover approved diagnostic equipment, perform routine - Inline diagnostic unit 2 diagnostic test - Exhaust gas recirculation valve.

  Clear the DTCs and retest

SYMPTOM:

Engine stops/stalls

POSSIBLE CAUSES:

• Exhaust gas recirculation system fault
• Positive crankcase ventilation system leaking/blocked

ACTION:

• Using the Jaguar Land Rover approved diagnostic equipment, perform routine - Inline diagnostic unit 2 diagnostic test - Exhaust gas recirculation valve.

  Clear the DTCs and retest

• Check the integrity of the positive crankcase ventilation system. Rectify as necessary

SYMPTOM:

Fuel consumption excessively high

POSSIBLE CAUSES:

• Exhaust gas recirculation system fault
• Positive crankcase ventilation system leaking/blocked

ACTION:

• Using the Jaguar Land Rover approved diagnostic equipment, perform routine - Inline diagnostic unit 2 diagnostic test - Exhaust gas recirculation valve.

  Clear the DTCs and retest

• Check the integrity of the positive crankcase ventilation system. Rectify as necessary

SYMPTOM:

Exhaust emissions excessive

POSSIBLE CAUSES:

• Exhaust gas recirculation system fault
• Positive crankcase ventilation system leaking/blocked

ACTION:

• Using the Jaguar Land Rover approved diagnostic equipment, perform routine - Inline diagnostic unit 2 diagnostic test - Exhaust gas recirculation valve.

  Clear the DTCs and retest

• Check the integrity of the positive crankcase ventilation system. Rectify as necessary

SYMPTOM:

Engine oil leaks

POSSIBLE CAUSES:

• Positive crankcase ventilation system leaking/blocked

ACTION:

• Check the integrity of the positive crankcase ventilation system. Rectify as necessary

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 Emission Control - Ingenium i4 2.0l Diesel Specifications

Torque Specifications

Capacities

Engine Emission Control - Ingenium i4 2.0l Diesel / Description and OperationEngine System - General Information Bearing Inspection (G61255) / General Procedures

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