NUMBER: 24-003-15 REV. A
GROUP: Heating & Air Conditioning
DATE: August 29, 2015
THIS BULLETIN SUPERSEDES SERVICE BULLETIN 24-003-15, DATED JULY 31, 2015, WHICH SHOULD BE REMOVED FROM YOUR FILES. ALL REVISIONS ARE HIGHLIGHTED WITH **ASTERISKS** AND INCLUDE UPDATED MODEL LIST AND LABOR OPERATION.
HELP USING THE wiTECH DIAGNOSTIC APPLICATION FOR FLASHING A ECU IS AVAILABLE BY SELECTING “HELP” THEN “HELP CONTENTS” AT THE TOP OF THE wiTECH DIAGNOSTIC APPLICATION WINDOW.
THE wiTECH SOFTWARE IS REQUIRED TO BE AT THE LATEST RELEASE BEFORE PERFORMING THIS PROCEDURE.
SUBJECT:
Air Conditioning Inoperative
OVERVIEW:
This bulletin involves reprogramming the Heating Ventilation Air Conditioning (HVAC) module with the latest available software.
MODELS:
NOTE: **This bulletin applies to FB vehicles built on or before June 15, 2015 (MDH 0623XX).**
NOTE: **This bulletin applies to BU vehicles built on or before June 23, 2015 (MDH 0623XX).**
SYMPTOM/CONDITION:
A small number of customers may experience the loss of air conditioning operation.
DIAGNOSIS:
Using a Scan Tool (wiTECH) with the appropriate Diagnostic Procedures available in TechCONNECT, verify all systems are functioning as designed. If DTCs or symptom conditions, are present other than the symptom condition listed above, record the issues on the repair order and repair as necessary before proceeding further with this bulletin.
If the customer describes the symptom/condition listed above, perform the Repair Procedure.
REPAIR PROCEDURE:
NOTE: Install a battery charger 
to ensure battery voltage does not drop below 13.2 volts. Do not allow the charging voltage to climb above 13.5 volts during the flash process.
NOTE: If this flash process is interrupted/aborted, the flash should be restarted.
- Reprogram the HVAC with the latest available software. Detailed instructions for flashing control modules using the wiTECH Diagnostic Application are available by selecting the “HELP” tab on the upper portion of the wiTECH window, then “HELP CONTENTS.” This will open the Welcome to wiTECH Help screen where help topics can be selected.
- Using wiTECH, restore configuration and align proxi. This routine is available under the ‘Diagnostic Procedures’ tab found on the home, ‘Vehicle View’, page of wiTECH.
- Clear all DTCs that may have been set in any module due to reprogramming. The wiTECH application will automatically present all DTCs after the flash and allow them to be cleared.
POLICY:
Reimbursable within the provisions of the warranty.
TIME ALLOWANCE:
| Labor Operation No: | Description | Skill Category | Amount |
|---|---|---|---|
| 18-50-10-93 | Module, Heating Ventilation Air Conditioning (HVAC) Reprogram (0 – Introduction) | 07 – A/C and Heating | 0.2 Hrs |
NOTE: The expected completion time for the flash download portion of this procedure is approximately 2 minutes. Actual flash download times may be affected by vehicle connection and network capabilities.
FAILURE CODE:
The dealer must choose which failure code to use. If the customer came in with an issue and the dealer found updated software to correct that issue, use failure code CC, for all other use failure code RF.
- If the customer’s concern matches the SYMPTOM/CONDITION identified in the Service Bulletin, than failure code CC is to be used.
- If an available flash is completed while addressing a different customer concern, failure code RF is to be used.
| CC | Customer Concern |
| RF | Routine Flash |
Chrysler J2534 Application Overview
Flash Availability – J2534/Pass Thru Device
Vehicle to Diagnostic Tool Reference Chart
Chrysler Recommended J2534 Devices
For Chrysler recommended J2534 device, see below table.
| J2534 Device |
Firmware Version |
| CTC Vehicle Box * | 1.9 |
| UCAN 2 | 1.0 |
| Blue Streak -2534 Global Programmer | 2.10 |
| Actia I+ME Passthru | 2.07 |
* Chrysler recommends the CTC Vehicle Box Device for Chrysler SCI ECU reprogramming. SCI reprogramming is used on most PCMs and TCMs prior to the introduction of CAN bus vehicles which began in 2004 (Durango).
