Cruise Control - SET/RES Intermittent, Won't Activate
27 09 03May 20, 2009
2020680 Supersedes T.B. Group 27, number 09-02 dated May 13, 2009 to correct publication date.
Vehicle Information
Condition
Cruise Control Inoperative
Cruise control system at times cannot be activated using SET/RES button. The following entry is logged in steering wheel electronics -J527- fault memory:
Technical Background
Software error in steering column electronics control module -J527-.
Production Solution
Software was improved with value 1 as the final digit.
Example:
Service
NOTE:
5051/5052 must be updated to 15.92.00 or greater. Test plan will run only if the fault codes defined above are stored in the -J527-.
- Connect Midtronics In-Charge 940 (INC-940) tester/charger to maintain voltage of 12.5 - 14.5V.
- Connect VAS 5051/5052 and navigate to Steering Column Electronics.
To verify this technical bulletin applies, observe last digit of software level.
If a fault log has been printed:
- Observe last number of software index under "Steering Column Electronics" and compare to table above. If last digit is a 1, this technical bulletin DOES NOT apply.
If a fault log has not been printed, perform the following:
- Select "Vehicle Self Diagnosis "
- Select "On Board Diagnostics (OBD)"
- Select "16 - Steering Wheel Electronics"
- Observe last number of software index in upper right hand of screen. If a "1" is shown, this technical bulletin DOES NOT apply.
Procedure
- Select "Operating Mode -> Guided Functions -> Steering Wheel Electronics -> Adaptation cruise control system debounce counter"
When completed, confirm codes are erased. If codes remain, further diagnosis will need to be performed. Otherwise, exit GFF.
Warranty
Required Parts and Tools
No Special Parts required.
Additional Information
All part and service references provided in this Technical Bulletin are subject to change and/or removal. Always check with your Parts Dept. and Repair Manuals for the latest information.