NUMBER:
GROUP:
DATE:

24-005-15
Heating & Air
Conditioning
October 14, 2015

This bulletin is supplied as technical information only and is not an authorization for repair. No part of this publication may be reproduced, stored in a retrieval system,
or transmitted, in any form or by any means, electronic, mechanical, photocopying, or otherwise, without written permission of FCA US LLC.

THIS BULLETIN SUPERSEDES TECHNICAL SERVICE BULLETIN 24-003-14 REV.A,
DATED OCTOBER 17, 2014, WHICH SHOULD BE REMOVED FROM YOUR FILES.
ALL REVISIONS ARE HIGHLIGHTED WITH **ASTERISKS** AND INCLUDES
REMOVING THE BUILD DATE RANGE FOR WK, REVISED SYMPTOM/CONDITION
AND CHANGING THIS SERVICE BULLETIN TO AN RRT STATUS.
THIS SERVICE BULLETIN IS ALSO BEING RELEASED AS RAPID RESPONSE
TRANSMITTAL (RRT) 14-087. ALL APPLICABLE SOLD AND UN-SOLD RRT VIN's
HAVE BEEN LOADED. TO VERIFY THAT THIS RRT SERVICE ACTION IS
APPLICABLE TO THE VEHICLE, USE VIP OR PERFORM A VIN SEARCH IN
TECHCONNECT. ALL REPAIRS ARE REIMBURSABLE WITHIN THE PROVISIONS OF
WARRANTY.
HELP USING THE wiTECH DIAGNOSTIC APPLICATION FOR FLASHING AN 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:
Flash: Temperature Control Enhancement
OVERVIEW:
This bulletin involves reprogramming the HVAC Module with new software.
MODELS:
2014

(WK)

**Jeep** Grand Cherokee

2014

(WD)

**Dodge** Durango

NOTE: **This bulletin applies to WK vehicles equipped with Dual Zone Automatic
Temperature Control (sales code HAF)**
NOTE: **This bulletin applies to WD vehicles equipped with 3 Zone Automatic
Temperature Control (sales code HAH) built on or after August 19, 2013 (MDH
0819XX) and on or before April 16, 2014 (MDH 0416XX).**

24-005-15

-2-

SYMPTOM/CONDITION:
Customers may experience the following condition:
•
•

Vehicle cabin temperature seems too warm even after reducing the Automatic
Temperature Control setpoint.
**Heat mode becomes active when the radio is configured to read in °C and cabin
temperature is set to LO.**

Updating the HVAC software will correct these conditions.
DIAGNOSIS:
Using a Scan Tool (wiTECH) with the appropriate Diagnostic Procedures available in
TechCONNECT, verify all HVAC 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 a customer’s VIN is listed in VIP or your RRT VIN list, perform the repair. For all other
customers that describe the symptom/condition, perform the Repair Procedure.
REPAIR PROCEDURE:
NOTE: If this flash process is interrupted/aborted, the flash should be restarted.
1. Using the wiTECH Diagnostic Application for flashing a HVAC is made available
through the wiTECH Diagnostic Application. For instructions select the “HELP” tab on
upper portion of the wiTECH window, then “HELP CONTENTS.” This will open the
Welcome to wiTECH Help screen were help topics can be selected.
NOTE: If the HVAC module already has the latest software in it, use LOP
**18-19-62-9J** close this active RRT.
2. **Perform the Actuator Calibration Test routine found under the Systems Test tab in
the HVAC control module view in the wiTECH Diagnostic Application.
3. Clear any DTCs that may have been set in other modules due to reprogramming. The
wiTECH application will automatically present all DTCs after the flash and allow the
tech to clear them.**
POLICY:
Reimbursable within the provisions of the warranty.
TIME ALLOWANCE:
Labor Operation
No:
**18-19-62-9J**

Description
Module, Automatic Temperature
Control (ATC) - Inspect and/or
Reprogram
(0 - Introduction)

Skill Category
6 - Electrical
and Body
Systems

Amount
0.2 Hrs.

NOTE: The expected completion time for the flash download portion of this
procedure is approximately **8** minutes. Actual flash download times may
be affected by vehicle connection and network capabilities.

-3-

24-005-15

**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, 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**