Land Rover Discovery: Exhaust - Ingenium i4 2.0l Diesel Diesel Particulate Filter / Diagnosis and Testing

PRINCIPLE OF OPERATION

For a detailed description of the exhaust system, refer to the relevant Description and Operation section of the workshop manual.

REFER to: Diesel Particulate Filter (309-00C Exhaust System - 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.
• Generic scan tools may not read the codes listed, or may read only 5-digit codes. Match the 5 digits from the scan tool to the first 5 digits of the 7-digit code listed to identify the fault (the last 2 digits give extra information read by the manufacturer-approved diagnostic system).
• 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.
• Inspect connectors for signs of water ingress, and pins for damage and/or corrosion.
• If DTCs are recorded and, after performing the pinpoint tests, a fault is not present, an intermittent concern may be the cause.
• Always check for loose connections and corroded terminals.

  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.

1. Verify the customer concern
2. Visually inspect for obvious signs of mechanical or electrical damage

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 DTCs and refer to the DTC Index

SYMPTOM CHART

SYMPTOM:

Amber warning message on instrument cluster - DPF FULL REFER TO HANDBOOK

POSSIBLE CAUSES:

• Blocked regeneration
• Customer driving routine does not allow the system to clean the particulate filter

ACTION:

If DTC is P246B-00 or AMBER DPF FULL REFER TO HANDBOOK message is displayed with no other reported messages. No repair is required, if the vehicle is driven on a highway AS DIRECTED IN THE HANDBOOK then the light will be extinguished and the system self healed, nothing more than this is required

SYMPTOM:

Lack of power

POSSIBLE CAUSES:

• Air intake system fault
• Restricted exhaust system
• Low fuel pressure Exhaust Gas Recirculation (EGR) valve(s) fault
• Turbocharger fault
• Diesel Particulate filter fault

ACTION:

Check the air intake system. Check for a blocked catalytic converter or muffler, install new components as necessary. Check the fuel pressure. For EGR and turbocharger tests, refer to the relevant section of the workshop manual

DTC Index

NOTES:

• If the control module or a component is suspect and the vehicle remains under manufacturer warranty, refer to the Warranty Policy and Procedures manual (section B1.2), or determine if any prior approval programme is in operation, prior to the installation of a new module/component
• Generic scan tools may not read the codes listed, or may read only 5-digit codes. Match the 5 digits from the scan tool to the first 5 digits of the 7-digit code listed to identify the fault (the last 2 digits give extra information read by the manufacturer approved diagnostic system)
• Check and rectify basic faults before beginning diagnostic routines involving pinpoint tests
• Inspect connectors for signs of water ingress, and pins for damage and/or corrosion
• If DTCs are recorded and, after performing the pinpoint tests, a fault is not present, an intermittent concern may be the cause.

  Always check for loose connections and corroded terminals

PINPOINT TESTS

NOTE:

DO NOT carry out this process on any other occasion without first installing a new diesel particulate filter

DIESEL PARTICULATE FILTER REGENERATION PROCEDURE

CAUTION:

The regeneration procedure produces high temperatures in the diesel particulate filter. Heat can be felt radiating from beneath the vehicle, which is normal and not a cause for concern. However, the vehicle should not be parked over combustible material, particularly during dry weather. The heat generated could be sufficient to start a fire when in close proximity to combustible material such as long dry grass, paper etc

If DPF FULL SEE HANDBOOK appears in the message center, carry out the following procedure

CAUTION:

At all times during this procedure you should observe all relevant speed limits, laws, and regulations

1. Drive the vehicle until the engine reaches normal operating temperature. The engine should NOT be left idling to achieve working temperature
2. Drive the vehicle for a further twenty minutes, keeping the vehicle at a constant speed between 75 km/h (45 mph) and 120 km/h (75 mph)

NOTE:

The ideal speed and conditions for regeneration are 100 km/h (62 mph ) ~ 120 km/h (75 mph), in Drive. Keeping a constant speed enables the diesel particulate filter to regenerate more efficiently. It is therefore recommended that cruise control is used to achieve this, if possible

3. If regeneration is successful the warning message will be extinguished, once the message is extinguished please keep driving for 10 minutes to ensure that the diesel particulate filter is completely clean
4. If the message remains repeat the process

NOTE:

When driving off-road during the regeneration process, greater accelerator pedal use may be required

DTC Index

For a complete list of all diagnostic trouble codes 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).

Exhaust - Ingenium i4 2.0l Diesel Exhaust System (G1880488) / Removal and Installation

REMOVAL

WARNING:

Observe due care when working near a hot exhaust system.

NOTE:

Removal steps in this procedure may contain installation details.

WARNING:

Make sure to support the vehicle with axle stands.

Raise and support the vehicle.

CAUTION:

Make sure that the exhaust system is supported with suitable retaining straps.

WARNING:

This step requires the aid of another technician.

Torque: 55 Nm

INSTALLATION

CAUTION:

Make sure that the component aligns with the installation mark.

To install, reverse the removal procedure.

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