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Technical Service Bulletin 2077632/1
Technical Service Bulletin
Transaction No.: 2077632/1
01-25-03 - Update Programming, DTC P027E stored in Engine/Motor Control Module -J623-
Release date: Apr 17, 2025

Condition

Applicable Vehicles

Model(s)

Year

Eng. Code

Trans. Code

VIN Range From

VIN Range To

Taos FWD

(with remote start)

2025

1.5T

(DYBA)

ALL

B2_SM000001

B2_SM031018

Taos FWD

(without remote start)

2025

1.5T

(DYBA)

ALL

B2_SM000001

B2_SM031016

Taos 4Motion

(with remote start)

2025

1.5T

(DYBA)

ALL

B2_SM000001

B2_SM031010

Taos 4Motion

(without remote start)

2025

1.5T

(DYBA)

ALL

B2_SM000001

B2_ SM031019

 

Revision Table

Instance Number

Published Date

Version Number

Reason For Update

2077632/1

04/14/2025

01-25-03

Original publication.

 

One or more of the following fault code(s) must be stored in the ECM:

 

DTC

Description

P027E

Cold Start Fuel Injection Quantity "A" Lower Than Expected

 

 

DO NOT diagnose or replace any components for the above fault(s) before performing the update function as explained in this bulletin.

Technical Background

Improved ECM software with improved secondary air adaptation.

Production Solution

Improved ECM software introduced in MY25 production.

Service

Update-Programming Procedure:

Critical Warning: The Midtronics battery charger with at least 70A charging currentmustbe connected to the vehicle battery for the duration of the programming, to ensure the battery state of charge remains above 12.5 volts during the update process.  If the battery drops below 12.5 volts, the programming could fail which may result in damage to the control module.  Control modules damaged by inadequate voltage will not be covered under the warranty policy.  The technician should verify the vehicle voltage prior to starting the update process, and should monitor the voltage for the duration of the update.

 

Radiator Fan(s) may cycle ON high speed during the Update Process! There is a risk that personal injury may result if contact is made with spinning fan blades.Keep hands and objects away from Radiator Fan(s) during update process.

 

Priorto launching the ODIS service diagnostic applications and starting control module update process, confirm tester screen saver and power settings in accordance with Special Tools and Equipment - Service Information Circular # VHW-22-13. Failure to do so may result in the tester entering power save mode during data transfer, and subsequent control module failure.Whenusing a VAS 6150/X or 6160/X tester in conjunction with a VAS 6154/X wireless transmitter head for a flash procedure, connect a USB cable between the transmitter head and the tester. Failure to do so may lead to errors during the flash procedure. VAS tools must only be used with their power adapters plugged in. Under no circumstances should they be used on battery power alone during the programming procedure.

 

 

The SVM Process must be completed in its entirety, so the database receives the update confirmation response. A warranty claim may not be reimbursed if there is no confirmation response to support the claim or action is carried out that is not explicitly stated in the Technical Bulletin.

 

Update the -J623- Engine/Motor Control Module using the SVM Unit code as listed in the table below:

 

Model

Engine

Old Software Part No.

Old Software Version

New Software Part No.

New Software Version (or higher)

SVM Unit Code

Taos FWD

(with remote start)

1.5T

(DYBA)

05E 906 013 BK

3726

3806

3997

4458

4650

05E 906 013 BK

4672

4F69

Taos FWD

(without remote start)

1.5T

(DYBA)

05E 906 013 BJ

3725

3805

3996

4457

4649

05E 906 013 BJ

4671

4F69

Taos 4Motion

(with remote start)

1.5T

(DYBA)

05E 906 013 BL

3727

3850

3998

4459

4651

05E 906 013 BL

4673

4F69

Taos 4Motion

(without remote start)

1.5T

(DYBA)

05E 906 013 BM

3728

3851

3999

4460

4652

05E 906 013 BM

4674

4F69

 

 

The procedure can be found in GFF under Functions/ Component Selection, Software Version Management, Adapting Software.

Ensure attached ECM/TCM Tuning Form has been completed and signed by customer.

 

Warranty

 

To determine if this procedure is covered under Warranty, always refer to the Warranty Policies and Procedures Manual(1)

Model(s)

Year

Eng. Code

Trans. Code

VIN Range From

VIN Range To

Taos FWD

(with remote start)

2025

1.5T

(DYBA)

ALL

B2_SM000001

B2_SM031018

Taos FWD

(without remote start)

2025

1.5T

(DYBA)

ALL

B2_SM000001

B2_SM031016

Taos 4Motion

(with remote start)

2025

1.5T

(DYBA)

ALL

B2_SM000001

B2_SM031010

Taos 4Motion

(without remote start)

2025

1.5T

(DYBA)

ALL

B2_SM000001

B2_ SM031019

SAGA Coding

Claim Type:

Use applicable Claim Type(1)

Service Number:

Damage

Code

HST

--

2470

0039

--

--

Parts Manufacturer

Taos

3ME(2)

Labor Operation3):GFF functions (including Battery Charge)

01500010= See Elsa for latest time units.

Labor Operation3):Update Programming

See GFF Time expenditure

Causal Part: Select Labor Operation

01500060

Diagnostic Time(4)

GFF Time expenditure

01500060= 50 TU max.

YES

Road Test

01210004 = 00 TU

NO

Technical Diagnosis

01320000 = 00 TU max.

NO

Claim Comment: Input “As per Technical Bulletin “2077632” in comment section of Warranty Claim.

1)Vehicle may be outside any Warranty in which case this Technical Bulletin is informational only

2)Code per warranty vendor code policy.

3)Labor Time Units (TUs) are subject to change with ELSA updates.

4)Documentation required per Warranty Policies and Procedures Manual.

 

Required Parts and Tools

No special parts required.

 

Tool Description

Tool No.

Midtronics Battery Tester/Charger

GRX3000VAS

or

MTRMSP0702 battery maintainer/charger

VAS Diagnostic Tool

VAS 6150/X & VAS 6160/X with:

ODIS Service with current online updates.

Additional Information

All part and service references provided in this Technical Bulletin are subject to change and/or removal. Always check with your Parts Dept. and Repair Manuals for the latest information.

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