GROUP: Vehicle Performance
DATE: May 17, 2007
FLASH: DTC's C121A / C2205 - Steering Angle Sensor - Not Initialized / Internal
This bulletin involves selectively erasing and reprogramming the Steering Angle Sensor (SAS) with new software.
NOTE: This bulletin applies to vehicles built on or before April 12, 2007 (MDH 0412XX).
The vehicle operator may experience an illumination of the Electronic Stability Program (ESP) lamp on the vehicle instrument cluster. The ESP lamp illumination may be due to the following Diagnostic Trouble Codes (DTC's):
C121A - Steering Angle Sensor Not Initialized
C2205 - Steering Angle Sensor Internal
This condition, and DTC's, may be intermittent. If the above DTC's occur during a drive cycle, then the ESP lamp will remain illuminated until the end of that drive cycle (key off).
Using a StarSCAN with the appropriate Diagnostic Procedures available in TechCONNECT, verify all engine systems are functioning as designed. If DTCs are present record them on the repair order and repair as necessary before proceeding further with this bulletin.
If the vehicle operator describes or experiences the Symptom/Condition, perform the Repair Procedure.
SPECIAL TOOLS / EQUIPMENT REQUIRED:
|CH9404||StarSCAN Vehicle Cable|
|CH9409||StarSCAN Documentation Kit|
|CH9410||StarSCAN Ethernet Cable, 12 ft.|
|CH9412||StarSCAN Software Update Device Kit|
|TechCONNECT PC or equivalent|
|Latest StarSCAN Software Update CD|