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LT B 0 1 2 0 4 N A S 2

TECHNICAL BULLETIN
20 DEC 2018

© Jaguar Land Rover North America, LLC
NOTE: The information in Technical Bulletins is intended for use by trained, professional Technicians
with the knowledge, tools, and equipment required to do the job properly and safely. It informs these
Technicians of conditions that may occur on some vehicles, or provides information that could assist in
proper vehicle service. The procedures should not be performed by 'do-it-yourselfers'. If you are not a
Retailer, do not assume that a condition described affects your vehicle. Contact an authorized Land
Rover service facility to determine whether this bulletin applies to a specific vehicle.

I N F O R M AT I O N

Changes are highlighted in blue

SECTION:
303-04: Fuel Charging and Controls

S U B J E C T/ C O N C E R N :
Engine MIL Illuminated With DTC P0234-77 Stored

AFFECTED VEHICLE RANGE:
MODEL:
Discovery (LR)

MODEL YEAR:
2017-2018

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VIN:
000001-090164

APPLICABILITY:
TDV6 3.0L Diesel

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MODEL:

MODEL YEAR:

VIN:

APPLICABILITY:

Range Rover Sport (LW)

2016-2018

519971-831586

TDV6 3.0L Diesel

Range Rover (LG)

2016-2018

216967-533162

TDV6 3.0L Diesel

MARKETS:
NORTH AMERICA

CONDITION SUMMARY:

SITUATION:
The engine MIL (Malfunction Indicator Lamp) may be illuminated on the Instrument Panel Cluster with
DTC (Diagnostic Trouble Code) P0234-77 stored in the Powertrain Control Module (PCM). DTC P246300 and P246B-00 may also be stored.
CAUSE:
This may be caused by a component fault.
ACTION:
Should a customer express this concern, follow the Diagnostic Procedure and Workshop Procedure(s)
below.

PA RTS :
PART NUMBER

DESCRIPTION

QUANTITY

LR078546

Intake air shutoff throttle

1

LR063121

Inlet hose clamp

1

TOOLS:

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


Jaguar Land
Rover-approved
Midtronics battery
power supply



Jaguar Land
Rover-approved
diagnostic tool
with latest SDD
Software
Management Pack



95-0106

Jaguar Land
Rover-approved
diagnostic tool
with latest
PATHFINDER
software

High Pressure
Diagnostic Leak
Detector

WARRANT Y:

NOTES:
Repair procedures are under constant review, and therefore times are subject to change;
those quoted here must be taken as guidance only. Always refer to JLR claims submission
system to obtain the latest repair time.
The JLR Claims Submission System requires the use of causal part numbers. Labor only claims
must show the causal part number with a quantity of zero.
DESCRIPTION

SRO

TIME
(HOURS)

CONDITION
CODE

CAUSAL
PART

Leakage test using smoke test equipment

01.01.28

0.4

41

LR078546

Read and clear Diagnostic Trouble Codes (DTC)

12.90.16

0.2

41

LR078546

Intake air shutoff throttle - Renew - Discovery

19.70.32

0.5

41

LR078546

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DESCRIPTION

SRO

TIME
(HOURS)

CONDITION
CODE

CAUSAL
PART

Intake air shutoff throttle - Renew - Range Rover Sport;
Range Rover

19.70.32

0.2

41

LR078546

Perform road test

10.41.17

0.3

10

-

Diesel Particulate Filter (DPF) - Dynamic regeneration

17.50.45

0.5

41

LR078546

NOTE:
Normal Warranty procedures apply.

DIAGNOSTIC PROCEDURE 'A':

CAUTIONS:
A Jaguar Land Rover-approved Midtronics battery power supply must be connected to the
vehicle startup battery during diagnosis / module programming.
All ignition ON/OFF requests must be performed; failure to perform these steps may cause
damage to control modules in the vehicle.
1

Connect the Jaguar Land Rover-approved Midtronics battery power supply to the vehicle
startup battery.

2

NOTE:
The Jaguar Land Rover-approved diagnostic tool must be loaded with SDD155.03
Software Management Pack v308 (or later) OR PATHFINDER 208 (or later).
Connect the Jaguar Land Rover-approved diagnostic tool to the vehicle and begin a new
session.

3

Follow all on-screen instructions, allowing the diagnostic tool to read the VIN, identify the
vehicle, and initiating the data collect sequence.

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Read the DTC.
If DTC P0234-77 is not stored, do not continue with this Technical Bulletin.
Perform diagnosis as per TOPIx Workshop Manual section 100-00: General
Information - Description and Operation.
If DTC P0234-77 is stored, go to Workshop Procedure 'A'.

5

Exit the current session.
1 Select the Session tab.
2 Select the Close Session option.

WORKSHOP PROCEDURE 'A':

NOTE:
DTC P0234-77 can be attributed to a leak in the air intake system.
1

Complete a leakage test on the intake system using smoke test equipment (see TOPIx
Workshop Manual section 303-00: Engine system general information - General procedures Leakage test using smoke test equipment).
If a leak is not found, go to Service Instruction B.
If a leak Is found, repair as required (see TOPIx Workshop Manual).
To be performed as a separate claim.
When the leak repair is complete, go to the next step.

2

NOTE:
The Jaguar Land Rover-approved diagnostic tool must be loaded with SDD155.03
Software Management Pack v308 (or later) OR PATHFINDER 208 (or later).
Begin a new session.

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Follow all on-screen instructions, allowing the diagnostic tool to read the VIN, identify the
vehicle, and initiating the data collect sequence.

4

Read and clear all DTC.

5

Perform a short vehicle road test.

6

After the road test, read the DTC.
If DTC P0234-77 is not stored, do not continue with this Technical Bulletin.
Go to the next step.
If DTC P0234-77 is stored, go to Service Instruction 'B'.

7

Exit the current session.
1 Select the Session tab.
2 Select the Close Session option.

8

Disconnect the diagnostic tool and battery power supply from the vehicle.

WORKSHOP PROCEDURE 'B':

1

Renew the intake air shutoff throttle (see TOPIx Workshop Manual section 303-04: Fuel
Charging and Controls - Removal and Installation - Intake Air Shutoff Throttle).
1 When all tasks are finished, go to the appropriate Diagnostic Procedure below:
2016MY Vehicles: go to Diagnostic Procedure 'B' to perform a Diesel Particulate
Filter (DPF) - Dynamic regeneration.
2017-18MY Vehicles: go to Diagnostic Procedure 'C' to perform a Diesel
Particulate Filter (DPF) - Dynamic regeneration.

DIAGNOSTIC PROCEDURE 'B':
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This Diagnostic Procedure is only for vehicles requiring the Jaguar Land Rover-approved
diagnostic equipment with Symptom Driven Diagnostics (SDD).
CAUTIONS:
A Jaguar Land Rover-approved battery power supply must be connected to the vehicle
startup battery.
All ignition ON/OFF requests MUST be performed; failure to do these steps may cause
damage to vehicle control modules.
1

2

Connect the Jaguar Land Rover-approved battery power supply to the vehicle startup battery.

NOTE:
The Jaguar Land Rover-approved diagnostic equipment must be loaded with
SDD155.03 Software Management Pack v308 (or later).
Connect the Jaguar Land Rover-approved diagnostic equipment to the vehicle and begin a
new session.

3

Follow all on-screen instructions.

4

If the hyperlink is not available:
1 Select Diagnosis from the Session Type screen.
2 Select Run to perform the 'Diesel particulate filter dynamic regeneration' option.

5

Follow all on-screen instructions until the application completes successfully.
1 When prompted, select the Clear DTCs option following completion of the software
download.
2 Follow the on-screen instructions until the application finishes successfully.

6

Exit the current session.
1 Select the Session tab.

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2 Select the Close Session option.
7

Disconnect the diagnostic equipment and battery power supply from the vehicle.

DIAGNOSTIC PROCEDURE 'C':

This Diagnostic Procedure is only for vehicles requiring the Jaguar Land Rover-approved
diagnostic equipment with PATHFINDER.
CAUTIONS:
A Jaguar Land Rover-approved battery power supply must be connected to the vehicle
startup battery.
All ignition ON/OFF requests MUST be performed; failure to do these steps may cause
damage to vehicle control modules.
1

2

Connect the Jaguar Land Rover-approved battery power supply to the vehicle startup battery.

NOTE:
The Jaguar Land Rover-approved diagnostic equipment must be loaded with
PATHFINDER version 208 (or later).
Connect the Jaguar Land Rover-approved diagnostic equipment to the vehicle and begin a
new session.

3

NOTE:
The Jaguar Land Rover-approved diagnostic equipment will read the correct Vehicle
Identification Number (VIN) for the current vehicle and automatically take the vehicle
out of Transit mode (if required).
Follow all on-screen instructions.

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4

Select ECU Diagnostics.

5

Select Service.

6

Select Powertrain Control Module [PCM]: Diesel particulate filter dynamic regeneration.
1 Follow the on-screen instructions until the application finishes successfully.

7

Exit the current session.
1 If required, reset the vehicle to Transit mode.
2 Select the Exit icon.

8

Disconnect the diagnostic equipment and battery power supply from the vehicle.

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