NUMBER:
GROUP:
DATE:

18-055-17 REV. A
18 - Vehicle Performance
October 20, 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 18-055-17, DATED JUNE 08, 2017, WHICH
SHOULD BE REMOVED FROM YOUR FILES. ALL REVISIONS ARE HIGHLIGHTED WITH
**ASTERISKS** AND INCLUDE ADDITIONAL DIAGNOSTIC TROUBLE CODE (DTC) 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: Powertrain Diagnostic and System Enhancements
OVERVIEW:
This bulletin involves reprogramming the Powertrain Control Module (PCM) with the latest available
software.
MODELS:
2017

(DX)

RAM Truck (Mexico)

NOTE: This bulletin applies to vehicles within the following markets/countries: NAFTA,
(Mexico).
NOTE: This bulletin applies to vehicles equipped with a 5.7L V8 Hemi VVT Engine (Sales
Code EZC).

18-055-17 REV. A

-2-

SYMPTOM/CONDITION:
**Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further
investigation the technician may find that the following DTC has been set:
• P0870 - OD Hydraulic Pressure Test.**
In addition, the following software enhancement is available:
• When starting a cold engine the vehicle has a rough idle and/or the engine will immediately
shut off.
DIAGNOSIS:
Using a Scan Tool (wiTECH) with the appropriate Diagnostic Procedures available in
TechCONNECT, verify all related systems are functioning as designed. If Diagnostic Trouble Codes
(DTCs)or symptom conditions, other than the one listed above are present, record the issues on
the repair order and repair as necessary before proceeding further with this bulletin.
For all other customers that describe the symptom/condition, or if the technician finds any of the
DTCs perform the Repair Procedure.
REPAIR PROCEDURE:
NOTE: 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 application’s “HELP”
tab.
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.
3. Verify the 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-TS

Description

Skill Category

Amount

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

1 - Engine Repair 0.2 Hrs.**
and Performance

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.

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18-055-17 REV. A

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