Slow Acceleration From A Standing Start (LTB00013)

Publication date: 2007-05-24
Reference number: LTB00013

SLOW ACCELERATION FROM A STANDING START

TECHNICAL SERVICE BULLETIN

Reference Number(s): LTB00013, Date of Issue: 24 May 2007

LAND ROVER:	LR3 (LA) (V8 Only); Range Rover Sport (LS) (Normally Aspirated Only); New Range Rover (LM) (Normally Aspirated Only)
ISSUE:	2
SECTION:	303-14 - ELECTRONIC ENGINE CONTROLS
AFFECTED VEHICLES:	LR3 (LA) (V8 Only) VIN: 5A000360 to 7A421934; Range Rover Sport (LS) (Normally Aspirated Only) VIN: 6A900129 to 7A992790; New Range Rover (LM) (Normally Aspirated Only) VIN: 6A194480 to 7A247042

NOTE: END VIN FOR EACH MODEL HAS BEEN ADJUSTED.

CONDITION SUMMARY

SLOW ACCELERATION FROM A STANDING START

Situation: With the engine at normal operating temperature, a customer may report a concern of an intermittent hesitation when accelerating from a standing start. This situation is most likely to be experienced in very hot ambient temperatures.

The acceleration can recover when engine speed exceeds approximately 2000 rpm or after a few seconds/feet of travel.

Action: Should a customer express a concern, refer to the REPAIR PROCEDURE detailed in this bulletin to re-configure the Engine Control Module (ECM) using the Integrated Diagnostic System (IDS).

PARTS

No parts required. This bulletin provides concern resolution information only.

TOOLS

IDS DVD104 with Patch File 2 or later software

WARRANTY

NOTE: 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 DDW to obtain the latest repair time.

DDW requires the use of causal part numbers. Labor only claims must show the causal part number with a quantity of zero.

WARRANTY CHART

Description	SRO	Time (Hours)	Condition Code	Causal Part
Re-configure ECM	12.90.13	0.20	D21	NNN5000411

Normal warranty policy and procedures apply.

REPAIR PROCEDURE

RECONFIGURE ENGINE CONTROL MODULE (ECM)

CAUTION: This procedure requires IDS DVD104 with Patch File 2 or later software.

CAUTION: A Midtronics PSC-550 Vehicle Power Supply must be connected to the vehicle battery during diagnosis and module configuration.

Connect the Midtronics PSC-550 power supply to the vehicle battery.
Connect IDS to the vehicle and begin a new diagnostic session, by entering the correct VIN for the current vehicle.
Follow the IDS prompts to read the vehicle configuration.
NOTE: Any associated diagnostic routines should be carried out as a separate Warranty claim.
Carry out any associated diagnostic routines and clear any fault codes.
When prompted 'Do you wish to read diagnostic trouble codes?', select 'NO' and then press the 'tick' button to continue.
When the 'Content Model' is displayed select 'Vehicle Configuration' tab.
From the Vehicle Configuration Menu, select Module Programming > Configure Existing Modules > Petrol Powertrain Control Module and then press the 'tick' button to re-configure the ECM.
Follow all on-screen instructions to complete this task.
When the task is completed, exit the current session.
Disconnect IDS and the power supply from the vehicle.