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18-104-15
Vehicle Performance
December 12, 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 SERVICE BULLETINS 21-008-12, DATED MARCH 23,
2012 AND SERVICE BULLETIN 18-021-12, DATED JULY 26, 2012 WHICH SHOULD
BE REMOVED FROM YOUR FILES. ALL REVISIONS ARE HIGHLIGHTED WITH
**ASTERISKS** AND INCLUDE UPDATED DTC LIST, SYMPTOM/CONDITION,
DIAGNOSIS, REPAIR PROCEDURE AND LABOR OP, COMBINING TWO PREVIOUS
BULLETINS.
THIS SERVICE BULLETIN IS ALSO BEING RELEASED AS RAPID RESPONSE
TRANSMITTAL (RRT) 12-020. ALL APPLICABLE UN-SOLD RRT VIN's HAVE BEEN
LOADED FOR VEHICLES BUILT BEFORE FEBRUARY 01, 2012. TO VERIFY THAT
THIS RRT SERVICE ACTION IS APPLICABLE TO THE UN-SOLD VEHICLE, USE VIP
OR PERFORM A VIN SEARCH IN TECHCONNECT. FOR VEHICLES NOT INCLUDED
IN THE RRT VIN LIST, APPLICATION OF THIS SERVICE BULLETIN TO SOLD UNITS
IS BASED UPON THE CUSTOMER EXPERIENCING THE SYMPTOM/CONDITIONS.
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: 3.6L Powertrain Diagnostic And System Enhancements
OVERVIEW:
This bulletin involves flash reprogramming the Powertrain Control Module (PCM) with new
software.
NOTE: There will be two software packages to choose from. Both software updates
will fix all symptoms/conditions listed. One will contain a enhanced
accelerator pedal operation and one will not. Refer to the
“Symptoms/Conditions” for a detailed description of the changes. Be sure to
consult with the Customer on what software version they prefer, Enhanced
Pedal or Standard Pedal. Once the software choice is programmed it is a
permanent change.

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MODELS:
2012

(RT)

Dodge
Caravan

2012

(RT)

Chrysler
Town And Country

NOTE: This Service Bulletin applies to vehicles built with 3.6L engine (sales code
ERB) and a 6 speed automatic transmission (sales code DG2).
SYMPTOM/CONDITION:
NOTE: There is another software choice available, in addition to addressing all the
symptom/conditions listed. This new version of software called Enhanced
Pedal has an update to the accelerator pedal operation. This change when
applied will make the vehicle more responsive with less pedal input and also
take less effort to maintain a constant cruising speed. Be sure to consult with
the Customer on what software version they prefer, Enhanced Pedal or
Standard Pedal. Once the software choice is programmed it is a permanent
change.
A small number of customers may experience a Malfunction Indicator Lamp (MIL)
illumination. Upon further investigation the technician may find the following Diagnostic
Trouble Code (DTC):
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**U0140 - Lost Communication With Body Control Module (BCM)**
P0108 - Manifold Absolute Pressure Sensor Circuit High
P0441 - Evap Purge System Performance
P06DE - Engine Oil Pressure Control Circuit Stuck On
P06DA - Engine Oil Pressure Control Circuit
P0420 - Catalyst Efficiency (Bank 1) sets in temperatures of 85° F (29° C) or higher
P0430 - Catalyst Efficiency (Bank 2) sets in temperatures of 85° F (29° C) or higher
P0133 - O2 Sensor 1/1 Slow Response
P0153 - O2 Sensor 2/1 Slow Response
P0300 - Multiple Cylinder Misfire
P0301 - Cylinder 1 Misfire
P0302 - Cylinder 2 Misfire
P0303 - Cylinder 3 Misfire
P0304 - Cylinder 4 Misfire
P0305 - Cylinder 5 Misfire
P0306 - Cylinder 6 Misfire
P113D - O2 Sensor 1/1 Slow Response (High Frequency)
P113E - O2 Sensor 2/1 Slow Response (High Frequency)

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In addition to the DTCs listed above, the software update will improve:
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**Garage shift engagements into Drive (D) may be harsh at times after shutdowns of
10-30 minute duration.**
Improved Cruise Control Acceleration mode.
Harsh 1-3 upshift while operating in Economy (ECO) mode.
Harsh 2-3 upshift while operating in normal mode.
Long crank times after an overnight soak when temperatures are between 14° F and
41° F (-10° C to 5° C). This condition is noticeable when E85 fuel is being used.
Tugging or a fish bite sensation while driving down the road under a very light
throttle at a steady state. This is most noticeable when temperatures are between
32° F and 86° F (0° C and 30° C).

DIAGNOSIS:
**Using a Scan Tool (wiTECH) with the appropriate Diagnostic Procedures available in
TechCONNECT, verify all vehicle 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 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 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 PCM with the latest available 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 all 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.**
POLICY:
Reimbursable within the provisions of the warranty.
TIME ALLOWANCE:
Labor Operation
No:
**18-19-06-GN

Description
Module, Powertrain Control (PCM) Reprogram
(0 - Introduction)

Skill Category
8 - Engine
Performance

Amount
0.2 Hrs.**

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NOTE: The expected completion time for the flash download portion of this
procedure is approximately 4 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 if the dealer finds a software update 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