24-008-14 REV. A

NUMBER:
GROUP:
DATE:
24-008-14 REV. A
Heating & Air
Conditioning
November 04, 2014
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 Chrysler Group LLC.
THIS BULLETIN SUPERSEDES SERVICE BULLETIN 24-008-14, DATED SEPTEMBER
17, 2014, WHICH SHOULD BE REMOVED FROM YOUR FILES. ALL REVISIONS ARE
HIGHLIGHTED WITH **ASTERISKS** .
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 LEVEL MUST BE AT RELEASE 15.02 OR HIGHER TO
PERFORM THIS PROCEDURE.
SUBJECT:
HVAC Blower Intermittently Cuts out When Set On High
OVERVIEW:
**This bulletin involves selectively erasing and reprogramming HVAC Control Module with
new software or replacing the HVAC Control Module.**
MODELS:
2014
(LD)
Charger
2014
(LX)
300
**2015
(LA)
Challenger**
NOTE: This bulletin applies to vehicles built on or before July 30, 2014 (MDH
0730XX).
SYMPTOM/CONDITION:
Customers may experience the blower cutting out when HVAC blower is set to high on
Manual Temperature Control (MTC) vehicles or while using high blower in manual mode
on Automatic Temperature Controls (ATC) vehicles.
PARTS REQUIRED:
Qty.
Part No.
Description
**1
68199429AD
HVAC Control Module**
24-008-14 REV. A
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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 the above condition is present, perform the Repair Procedure.
REPAIR PROCEDURE:
1. **Is this vehicle a (LA) Challenger?**
a. **Yes>>> Proceed to Step #4.**
b. **No>>> Proceed to Step #2.**
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.
2. Reprogram the HVAC module. 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 topics can be selected.
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. Proceed to Step #5.
4. **Replace HVAC module following the procedure outlined in TechCONNECT Section
24 - Heating and Air Conditioning > Controls > Control, A/C and Heater > Removal /
Installation. Once replacement is completed proceed to Step #5.**
5. Perform the Actuator Calibration Test routine found under the Systems Test tab in the
HVAC control module view in the wiTECH Diagnostic Application.
POLICY:
Reimbursable within the provisions of the warranty.
TIME ALLOWANCE:
Labor Operation
No:
Description
Skill Category
Amount
18-19-62-9D
Module, Automatic Temperature
Control (ATC) - Reprogram
(1 - Semi-Skilled)
7- A/C and
Heating
0.2 Hrs.
**24-50-10-9A
Control Assembly, ATC Automatic
Temp Control - Instrument Panel Replace (2 - Skilled)
7- A/C and
Heating
0.3 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.
-3-
24-008-14 REV. A
FAILURE CODE:
FM
Flash Module
LD/LX
**ZZ
Service Action
LA**
NOTE: The above failure codes are listed for reference only. The applicable failure
code will automatically populate during warranty submission.