Engine Controls - Poor Cold Start Up/Engine Stumble

No: LTB00197

Issue: 1

Date: 26 JAN 2009

SECTION: 303

Poor Engine Cold-Start / Stumble - Repair Procedure





AFFECTED VEHICLE RANGE

CONDITION SUMMARY:

Situation:

The engine may be hard to start or stumble when cold. This may be caused by sensitive Engine control module (ECM) calibration.

Action:

In the event of a customer concern of the above, refer to the Repair Procedure below to reconfigure the ECM, check the Transmission control module (TCM) software, and if necessary reconfigure the TCM.

PARTS:

No parts necessary; information only





TOOLS





WARRANTY

REPAIR PROCEDURE

CONFIGURE THE ENGINE CONTROL MODULE

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

1. Connect the Midtronics PSC-550 power supply to the vehicle battery.

NOTE:
IDS must be loaded with software release DVD 115 with Patch File 9 or later.

2. Connect the IDS to the vehicle and begin a new diagnostic session by entering the correct VIN for the current vehicle.

3. Follow the IDS prompts to read the vehicle configuration.

4. When prompted 'Do you wish to read diagnostic trouble codes?' select 'No'.

5. Select 'tick' to continue.

6. When Content Model is displayed, select the 'Vehicle Configuration' tab.

7. From the Vehicle Configuration menu, configure the ECM by selecting:

'Module programming' > 'Configure existing module' > 'Petrol powertrain control module'.

8. Select 'tick' to continue, following all on-screen instructions to complete this task.

9. When completed, IDS will return to the Vehicle Configuration menu.

VERIFY TRANSMISSION CONTROL MODULE SOFTWARE; CONFIGURE IF NECESSARY

1. From the Vehicle Configuration menu, verify the TCM software by selecting:

'Module programming' > 'Configure existing module' > 'Transmission control module'.

2. Select 'tick' to continue.

3. Follow all on-screen instructions until IDS displays the current and proposed software levels.

^ If 'Software update required' is displayed, select 'tick' to reconfigure the TCM.

^ If 'No update required' is displayed select 'tick', then select 'X' in the pop-up window to abort the routine: continue to step 5

4. Follow all on-screen instructions to complete this task.

^ IDS will return to the Vehicle Configuration menu when completed.

5. Exit the current session.

6. Disconnect IDS and the Midtronics PSC-550 Vehicle Power Supply from the vehicle.