NUMBER:

08-091-21

GROUP:

08 - Electrical

DATE:

May 22, 2021

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 Technical Service Bulletin (TSB) has also been released as a Rapid Response
Transmittal (RRT) 21-062, date of issue May 22, 2021. All applicable Sold and Un-Sold RRT
VINs have been loaded. To verify this RRT service action is applicable to the vehicle, use VIP
or perform a VIN search in DealerCONNECT/Service Library. All repairs are reimbursable
within the provisions of warranty. This RRT will expire 18 months after the date of issue.
SUBJECT:
Flash: Hybrid Control Processor (HCP) and Auxiliary Hybrid Control Processor (AHCP) Updates
OVERVIEW:
This bulletin involves reprogramming the HCP and AHCP or also known as Power Inverter Module
(PIM) with the latest available software.
MODELS:
2021

(RU)

Chrysler Pacifica (PHEV)

NOTE: This bulletin applies to vehicles within the following markets/countries: North
America.
NOTE: This bulletin applies to vehicles built on or before March 26, 2021 (MDH 0326XX)
equipped with a 3.6L V6 PHEV Hybrid Engine (Sales Code EH3).
SYMPTOM/CONDITION:
Technicians and/or customers may report the vehicle will not pass a state smog check due to
permanent fault codes which will not clear. As a result, the vehicles are not eligible to be registered
in certain states.
Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further
investigation the technician may find the following Diagnostic Trouble Codes (DTCs) have been set:
• P0513 - Invalid Skim Key.
• U151A-87 - Hybrid Control Processor Secret Code-Missing Message.
Customers may also experience the following symptom/conditions:
• Vehicle does not start when pushing ignition switch with DTC P0513 and U151-A87 (stored or
active).
• Scheduled charging start/end does not align with displayed time (ex: 12:05pm end time on
radio, but charging ends at 12:06pm).
• Scheduled charging does not start following a power outage.
• Scheduled Cabin Conditioning (SCC) feature will not function properly if they schedule the
departure time in between 50 mins to 480 mins at extreme cold ambient temps (below -24°c
(-11°f)).
• “Charge Now” soft button does not always work.
• The vehicle will get a rough engine spin-down, and then “Service Charging System” warning
and shutdown if the vehicle is quickly re-cranked after the initial key crank.

08-091-21

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• Unable to pass a smog check for certain states that require no DTCs present (stored or active).
• Vehicle shutdown (MIL set) if the acceleration pedal is 100% on ice.
• Vehicle may not have a successful 2nd remote start if customer happens to request it
immediately after 1st remote start without letting the vehicle sleep while at low High Voltage
(HV) battery State of Charge (SOC).
• Vehicle may not achieve propulsion through a cold key crank if the HV battery was not
conditioned using thermal periodic wakeup feature at critical cold temperatures (around -33°c
(-27°f)) even if the vehicle was left plugged into a charger for an extended period of time.
In addition, the following software enhancement is available:
• Corrections to allow the vehicle to clear the permanent fault codes.
NOTE: Additional module flash is required for this update to be effective, the following
modules are all to be updated along with this HCP and AHCP update:
• Powertrain Control Module (PCM)
DIAGNOSIS:
Using a Scan Tool (wiTECH) with the appropriate Diagnostic Procedures available in
DealerCONNECT/Service Library, 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 a customer’s VIN is listed in VIP or your RRT VIN list, perform the repair. If any vehicle not on the
VIN list exhibits the symptom/condition or finds permanent fault codes stored, perform the repair.
REPAIR PROCEDURE:
NOTE: The Powertrain Control Module (PCM) must be updated to the latest available
software at the conclusion of this repair procedure. Refer to all applicable published
technical service bulletins for detailed repair procedures and labor times regarding
updating the PCM software.
WARNING! Failure to update the PCM module following an HCP and AHCP software update
may result in vehicle malfunctions.
NOTE: Install a battery charger to maintain a 12 volt system voltage.
NOTE: If this flash process is interrupted/aborted, the flash should be restarted.
1. Does the HCP and AHCP have the latest software already installed?
• YES>>> This bulletin has been completed, use inspect LOP (18-19-86-9U) to close the
active RRT.
• NO>>> Proceed to Step 2.
2. Reprogram the HCP and AHCP with the latest software. Detailed instructions for flashing
control modules using the wiTECH Diagnostic Application are available by selecting the
application’s “HELP” tab.
3. Clear any DTCs that may have been set in any modules due to reprogramming. The wiTECH
application will automatically present all DTCs after the flash and allow them to be cleared.
4. Verify the PCM are also 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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08-091-21

POLICY:
Reimbursable within the provisions of the warranty.
TIME ALLOWANCE:
Labor Operation No:

Description

Skill Category

Amount

18-19-86-9U

Hybrid Control Processor
(HCP) and Auxiliary
Hybrid Control Processor
(AHCP) - Inspect
(0 - Introduction)

1- Engine Repair and Performance

0.2 Hrs.

18-19-86-9V

Processor, Hybrid Control 1 - Engine Repair and Per- 0.5 Hrs.
formance
(HCP/AHCP) - Inspect
and Reprogram
(0 - Introduction)

NOTE: The expected completion time for the flash download portion of this procedure is
approximately 18 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 depending on if this is a Rapid Response
Transmittal (RRT) or Service Bulletin.
• The “RF” failure code is required for essential module flash/reprogramming and can only be
used after confirmation that the VIN is included on the RRT.
• The failure code “RF” (Required Flash) can no longer be used on Service Bulletin flashes. The
“RF” failure code must be used on an RRT.
• 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 must be
supplied.
RF

Required Flash - RRT

CC

Customer Concern