NUMBER:
GROUP:
DATE:

18-014-16
Vehicle Performance
February 12, 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.

THIS BULLETIN SUPERSEDES SERVICE BULLETIN 18-084-15, DATED NOVEMBER
07, 2015, WHICH SHOULD BE REMOVED FROM YOUR FILES. ALL REVISIONS ARE
HIGHLIGHTED WITH **ASTERISKS** AND INCLUDE A REVISED BUILD DATE
ADDITIONAL SYMPTOMS/CONDITIONS AND LABOR OP.
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: 2.4L Powertrain Diagnostic And System Improvements
OVERVIEW:
This bulletin involves reprogramming the Powertrain Control Module (PCM) with the latest
available software.
MODELS:
2016

(KL)

Jeep Cherokee

NOTE: This bulletin applies to vehicles within the following markets/countries:
NAFTA, EMEA, APAC and LATAM.
NOTE: This bulletin applies to vehicles built on or before **February 01, 2016 (MDH
0201XX)** equipped with a 2.4L Engine (Sales Code ED6).
SYMPTOMS/CONDITIONS:
A small number of customers may experience a Malfunction Indicator Lamp (MIL)
illumination. Upon further investigation, the technician may find one or more of the
following Diagnostic Trouble Codes (DTCs):
•
•
•
•
•

**P0101 - Mass Air Flow Sensor "A" Circuit Performance.
P0335 - Crankshaft Position Sensor Circuit.
P0133 - O2 Sensor 1/1 Slow Response.
P1607 - PCM Internal Shutdown Timer Rationality.
P2610 - PCM Internal Engine Off Timer Performance.**

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•
•
•

-2-

B104D - Blend Door Control Circuit Low.
U0402 - Implausible Data Received From TCM.
U1424 - Implausible Engine Torque Signal Received.

In addition, some customers may experience the following:
•

A Transmission Tip-In Bump (when accelerating out of 4th gear).

DIAGNOSIS:
Using a Scan Tool (wiTECH) with the appropriate Diagnostic Procedures available in
TechCONNECT, verify all engine systems are functioning as designed. If DTCs other than
the ones listed above are present, record them on the repair order and repair as necessary
before proceeding further with this bulletin.
If the customer describes one or more of the symptoms/conditions or if the technician finds
a DTC listed above, perform the Repair Procedure.
REPAIR PROCEDURE:
CAUTION: The Transmission Control Module (TCM) must be updated to the latest
available software at the conclusion of this repair procedure. Refer to all
applicable published service bulletins for detailed repair procedures and
labor times regarding updating the TCM software.
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 PCM with the latest 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.
2. Clear any DTCs that may have been set in all modules due to reprogramming. The
wiTECH application will automatically present all DTCs after the flash and allow them
to be cleared.
3. Verify the Transmission Control Module (TCM) is programmed with the latest available
software. Refer to all applicable published service bulletins for detailed repair
procedures and labor times regarding updating the TCM software.
POLICY:
Reimbursable within the provisions of the warranty.
TIME ALLOWANCE:
Labor Operation No:
**18-19-06-HK

Description

Skill Category

Module, Powertrain Control 8 - Engine
(PCM) - Inspect and/or
Performance
Reprogram
(0 - Introduction)

Amount
0.2 Hrs.**

-3-

18-014-16

NOTE: The expected completion time for the flash download portion of this
procedure is approximately 6 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 SYMPTOMS/CONDITIONS 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