ABS/TCS - DSC Lamp ON/DTC U1900 After Start Up

NUMBER





MODEL





DATE

ISSUE '5' CHANGES ARE HIGHLIGHTED WITH GRAY BACKGROUND

SECTION: 206

Dynamic Stability Control Lamp Illuminated After Cranking - Repair Procedure





AFFECTED VEHICLE RANGE

CONDITION SUMMARY:

DYNAMIC STABILITY CONTROL (DSC) LAMP ILLUMINATED AFTER CRANKING

Situation:

After cranking, the DSC lamp illuminates and remains 'ON' for the remainder of the ignition cycle, with the possibility of Diagnostic Trouble Code (DTC) U1900 stored. A missing Controller Area Network (CAN) message may be the cause.

NOTE:
The Repair Procedure is for the replacement electronic portion of the Dynamic Stability Control Module (DSCM) only and should only be performed if all conditions have been met. The presence of DTC U1900 without the DSC lamp remaining 'ON' does not warrant a replacement DSCM.

Action:

Should a customer express concern and all conditions have been confirmed, refer to the Repair Procedure outlined below to install a new Dynamic Stability Control Module (DSCM).





PARTS





TOOLS





WARRANTY

REPAIR PROCEDURE

REPLACE DYNAMIC STABILITY CONTROL MODULE (DSCM)

NOTE:
Global Technical Reference (GTR) lookup sequence is as follows: GTR Home > NAS > X400 X-TYPE > Service Information > Model Year >Workshop Manuals > 2: Chassis > 206: Brake System > 206-09 > Anti-Lock Control Stability Assist

1. Refer to Workshop Manual (GTR) Section 206-09 (70.60.02) to replace the Dynamic Stability Control Module.

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

2. Connect the Midtronics PSC-550 Vehicle Power Supply to the vehicle battery.

NOTE:
IDS must be loaded with the latest IDS DVD.

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

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

5. Select 'No' when prompted 'Do you wish to read diagnostic trouble codes?'

6. Select 'tick' to continue.

7. Select the 'Vehicle Configuration' tab when Content Model is displayed.

8. From the Vehicle Configuration menu, configure the 'DSCM' by selecting from the drop-down menu:

^ 'Module programming' > 'Configure existing module' > 'Anti-lock brake control module'

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

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

10. Exit the current session.

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