Flash: Brake System Control Module (BSCM) Updates (08-034-22)

Publication date: 2022-02-23
Reference number: 08-034-22

FLASH: BRAKE SYSTEM CONTROL MODULE (BSCM) UPDATES

TECHNICAL SERVICE BULLETIN

Reference Number(s): 08-034-22, Date of Issue: February 23, 2022

CHRYSLER:	2021 - 2022 (WL) Jeep Grand Cherokee
GROUP:	08 - Electrical

Superceded Bulletin(s): 22-031, Date of Issue: February 23, 2022

NOTE: 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.

NOTE: This Technical Service Bulletin (TSB) has also been released as a Rapid Service Update (RSU) 22-031, date of issue February 23, 2022. All applicable Un-Sold RSU VINs have been loaded. To verify this RSU service action is applicable to the Un-Sold vehicle, use VIP or perform a VIN search in DealerCONNECT/Service Library. This RSU will expire 18 months after the date of issue.

OVERVIEW

This bulletin involves reprogramming the BSCM module with the latest available software.

MODELS

MODELS CHART

2021 - 2022

(WL)

Jeep Grand Cherokee

NOTE: This bulletin applies to vehicles within the following markets/countries: North America.

NOTE: This bulletin applies to vehicles built on or before January 29, 2022 (MDH 0129XX).

SYMPTOM/CONDITION

Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find that the following Diagnostic Trouble Code (DTC) has been set:

C0597-00 - Brake System Control Module 1 Performance.

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 RSU VIN list, perform the repair. If any vehicle not on the VIN list exhibits the symptom/condition or DTC, perform the repair.

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.

Is the vehicle unsold and on the RSU VIN list?
- YES>>> Proceed to Step 2 .
- NO>>> Proceed to Step 3 .
Does the BSCM have the latest software already installed?
- YES>>> This bulletin has been completed. Use inspect LOP (18-19-23-90) to close the active RSU.
- NO>>> Proceed to Step 3 .
Reprogram the BSCM with the latest available software. Detailed instructions for flashing control modules using the wiTECH Diagnostic Application are available by selecting the application's "HELP" tab.
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.
Perform BSCM initialization routine under "Misc Functions" after software update using wiTECH.

POLICY

Reimbursable within the provisions of the warranty.

TIME ALLOWANCE

TIME ALLOWANCE CHART

Labor Operation No:	Description	Skill Category	Amount
18-19-23-90	Module, Brake System Control (BSCM) - Inspect (0 - Introduction)	6 - Electrical and Body Systems	0.2 Hrs.
18-19-23-91	Module, Brake System Control (BSCM) - Inspect and Reprogram (0 - Introduction)	6 - Electrical and Body Systems	0.2 Hrs.

NOTE: The expected completion time for the flash download portion of this procedure is approximately 3 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 Service Update (RSU) or Technical 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 RSU.
The failure code "RF" (Required Flash) can no longer be used on Technical Service Bulletin flashes. The "RF" failure code must be used on an RSU.
If the customer's concern matches the SYMPTOM/CONDITION identified in the Technical Service Bulletin, failure code CC is to be used. When utilizing this failure code, the 3C's must be supplied.

FAILURE CODE CHART

RF	Required Flash - RSU
CC	Customer Concern