NUMBER:

21-007-16

GROUP:

Transmission and
Transfer Case

DATE:

February 09, 2016

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.

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: Power Transfer Unit (PTU) Motor Position Enhancements
OVERVIEW:
This bulletin involves updating the software in the Power Transfer Unit (PTU).
MODELS:
2015 - 2016

(K4)

Jeep Cherokee
(China)

NOTE: This bulletin applies to vehicles within the following markets/countries:
APAC.
NOTE: This bulletin applies to vehicles built on or before January 18, 2016 (MDH
0118XX). equipped AWD Single Speed Power Take off with (Sales Codes
DK2).
SYMPTOM/CONDITION:
A customer may experience All Wheel Drive (AWD) not operating correctly. On further
inspection the Technician may find the following Diagnostic Trouble Codes (DTCs),
C1494-92-PTU Fork Position - Performance or Incorrect Operation.
DIAGNOSIS:
Using a Scan Tool (wiTECH) with the appropriate Diagnostic Procedures available in
TechCONNECT, verify all of the AWD systems are functioning as designed. If DTCs or
symptom conditions, other than the ones listed above are present, 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 or if the technician finds the
DTC, perform the Repair Procedure.

21-007-16

-2-

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.
1. Perform the flash for the PTU. 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.
2. Turn the ignition off.
3. Turn the ignition key to the RUN position and perform the PTU flash.
4. When the flash is complete, turn the ignition key OFF.
5. Clear any 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.
6. After clearing DTCs is DTC C1494-92 code still active?
a. Yes >>> Further normal diagnosis will be necessary.
b. No >>> This bulletin has been completed.
POLICY:
Reimbursable within the provisions of the warranty.
TIME ALLOWANCE:
Labor Operation
No:
18-19-17-9K

Description
Modules, PTU, and DTCM Reprogram
(0 - Introduction)

Skill Category
2- Automatic
Transmission

Amount
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, 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