21-006-17 REV. A

NUMBER:
21-006-17 REV. A
GROUP:
21 - Transmission
and Transfer Case
DATE:
June 17, 2017
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 SERVICE BULLETIN 21-006-17, DATED FEBRUARY 10, 2017,
WHICH SHOULD BE REMOVED FROM YOUR FILES. ALL REVISIONS ARE HIGHLIGHTED
WITH **ASTERISKS** AND INCLUDE ADDITIONAL DIAGNOSTIC TROUBLE CODE (DTC),
REVISED BUILD TO DATE, UPDATED FAILURE CODE STATEMENT AND LOP.
FOR HELP WITH USING wiTECH FOR ECU FLASH REPROGRAMMING, CLICK ON THE
APPLICATION’S “HELP” TAB.
THE wiTECH SOFTWARE IS REQUIRED TO BE AT THE LATEST RELEASE BEFORE
PERFORMING THIS PROCEDURE.
SUBJECT:
Flash: Transmission Diagnostic and Shift Enhancements
OVERVIEW:
This bulletin involves reprogramming the Transmission Control Module (TCM) with the latest
available software.
MODELS:
2017
(KL)
Jeep Cherokee
NOTE: This bulletin applies to vehicles within the following markets/countries: NAFTA.
NOTE: This bulletin applies to vehicles built on or before **June 15, 2017 (MDH 0615XX)**
equipped with:
• 2.4L Engine (Sales Code ED6 or ED8) equipped with:
• 9-SPD 948TE FWD/AWD Automatic Transmission (Sales Code DFH).
• 3.2L V6 24V VVT Engine W/ESS (Sales Code EHK) equipped with:
• 9-SPD 948TE FWD/AWD Automatic Transmission (Sales Code DFH).
• 9-SPD 948TE 4WD Automatic Transmission (Sales Code DFJ).
21-006-17 REV. A
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SYMPTOM/CONDITION:
Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further
investigation the technician may find that the following DTCs have been set:
•
•
•
•
**P0810-00 - Clutch Position Control Error - (Sales Codes EHK).
P0887-00 - TCM Power Control Circuit High.**
U1424-00 - Implausible Engine Torque Signal Received.
P1DCD-00 - TCM Monitoring Processor Performance Multiple Clutches Locked Up.
Some customers may experience the following conditions:
• During a limp mode condition, the transmission remains in a fixed gear.
• 5-4 downshift hesitation.
• A longer than normal delay during a shift from reverse to drive selection.
In addition the following enhancements are included:
• Calibration update for Engine Stop Start (ESS) to allow the engine to remain running during a
brief stop.
• 2-1 and 3-2 coast down tip-in.
DIAGNOSIS:
Using a Scan Tool (wiTECH) with the appropriate Diagnostic Procedures available in
TechCONNECT, verify all related 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.
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. Reprogram the TCM with the latest software. Detailed instructions for flashing control modules
using the wiTECH Diagnostic Application are available by selecting the application’s “HELP”
tab.
2. 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 allows them to be cleared.
3. Verify the Powertrain Control Module (PCM) is programmed with the latest available software.
Refer to all applicable published service bulletins for detailed repair procedures and labor times
regarding updating the PCM software.
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21-006-17 REV. A
POLICY:
Reimbursable within the provisions of the warranty.
TIME ALLOWANCE:
Labor Operation
No:
Description
Skill Category
Amount
**18-19-05-FL
Module, Transmission Control
(TCM) - Reprogram
(0 - Introduction)
2 - Automatic Transmission
0.3 Hrs.**
NOTE: The expected completion time for the flash download portion of this procedure is
approximately 5 minutes. Actual flash download times may be affected by vehicle
connection and network capabilities.
FAILURE CODE:
**The dealer must use failure code CC with this Service Bulletin.
• If the customer’s concern matches the SYMPTOM/CONDITION identified in the Service
Bulletin, failure code CC is to be used.
• When utilizing this failure code, the 3C’s (customer’s concern, cause and correction) must be
provided for processing Service Bulletin flash/reprogramming conditions.**
CC
Customer Concern