NUMBER:
GROUP:
DATE:

18-113-15
Vehicle Performance
December 24, 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 BULLETIN 18-037-13, DATED AUGUST 31,
2013, WHICH SHOULD BE REMOVED FROM YOUR FILES. ALL REVISIONS ARE
HIGHLIGHTED WITH **ASTERISKS** AND INCLUDE REVISED
SYMPTOM/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: Powertrain Diagnostic And System Improvements
OVERVIEW:
This bulletin involves selectively erasing and reprogramming the Powertrain Control
Module (PCM) with new software.
MODELS:
2013

(WK)

Jeep Grand Cherokee

2013

(WD)

Dodge Durango

NOTE: This bulletin applies to vehicles equipped with a 3.6L engine (sales code
ERB) or a 6.4L engine (sales code ESG).
SYMPTOM/CONDITION:
The customer may describe a Malfunction Indicator Lamp (MIL) illumination. Upon further
investigation the technician may find one or more of the following Diagnostic Trouble
Codes (DTCs) has been set:
•
•
•
•
•

**P0122 - Throttle Position Sensor 1 Circuit Low (6.4L engine (sales code ESG).
P0123 - Throttle Position Sensor 1 Circuit High (6.4L engine (sales code ESG).
P0222 - Throttle Position Sensor 2 Circuit Low (6.4L engine (sales code ESG).
P0223 - Throttle Position Sensor 2 Circuit High (6.4L engine (sales code ESG).**
P0456 - Evap System Small Leak.

18-113-15

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DIAGNOSIS:
Using a Scan Tool (wiTECH) with the appropriate Diagnostic Procedures available in
TechCONNECT, verify all engine 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 PCM with the latest software. Help using the wiTECH Diagnostic
Application for flashing control modules is available through the wiTECH Diagnostic
Application. For instructions select the “HELP” tab on 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 other modules 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-ZE

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

Skill
Category

Amount

8 - Engine
0.2 Hrs.
Performance

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.

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18-113-15

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