21-01-043H
Service Bulletin Details
Public Details for: 21-01-043H
This bulletin provides information related to the engine control module (ecm) software update for 2021my elantra (cn7/cn7a) vehicles equipped with the 2.0l engine to update the ecm logic for the following conditions and dtcs: ï¿· incorr
- 2021 -
Models from 2021
2021 HYUNDAI ELANTRA |
GROUP NUMBER CAMPAIGN Technical Service Bulletin SUBJECT: DATE 21-01-043H MODEL(S) MAY, 2021 ELANTRA (CN7/CN7A) ECM SOFTWARE UPDATE – FUEL ADAPTATION LEARNING AND BLOWER MOTOR CONTROL LOGIC (SERVICE CAMPAIGN T6R) IMPORTANT *****Dealer Stock and Retail Vehicles***** Dealers must perform this Service Campaign on all affected vehicles prior to customer retail delivery and whenever an affected vehicle is in the shop for any maintenance or repair. When a vehicle arrives at the Service Department, access Hyundai Motor America's "Warranty Vehicle Information (VIS)" screen via WEBDCS to identify open Campaigns. Description: This bulletin provides information related to the Engine Control Module (ECM) software update for 2021MY Elantra (CN7/CN7A) vehicles equipped with the 2.0L engine to update the ECM logic for the following conditions and DTCs: Incorrect learning of the fuel adaptive values can occur if the engine is started at 14⁰F (-10⁰C) or colder ambient temperatures. If incorrect values are learned, the engine may stall when coming to a stop or at idle. DTC P016C: Closed Loop Air/Fuel Ratio Control at Limit-System Too Lean may be detected. The ECM software revises the logic for fuel adaptation learning and improves engine performance at idle. The ECM software also revises the blower motor control duty cycle logic for DTC P1CD0: Air Blower Motor Inverter Performance. Applicable Vehicle: Certain 2021MY Elantra (CN7/CN7A) equipped with 2.0L engine. Warranty Information: Model Op. Code Operation Op. Time Causal Part Nature Cause Elantra (CN7) 10D092R1 ECM UPGRADE 0.3 M/H 39171-2JCB0 I14 ZZ3 Elantra (CN7A) 10D092R1 ECM UPGRADE 0.3 M/H 39171-2JBB5 I14 ZZ3 NOTE 1: Submit Claim on Campaign Claim Entry Screen. NOTE 2: If a part that is not covered by this campaign is found in need of replacement while performing this Service Campaign and the affected part is still under warranty, submit a separate warranty claim using the same Repair Order. If the affected part is out of warranty, submit a Prior Approval Request for goodwill consideration prior to performing the work. Circulate To: Service Manager, Warranty Manager, Service Advisors, Technicians, Fleet Repair SUBJECT: ECM SOFTWARE UPDATE – FUEL ADAPTATION LEARNING AND BLOWER MOTOR CONTROL LOGIC (SERVICE CAMPAIGN T6R) GDS Information: System Selection: ENGINE CONTROL MODULE (ECM) Event # Description CN7 2.0 MPI - ECU LOGIC IMPROVEMENT FOR NU ATK IDLE STABILITY IN EXTREME COLD CONDITION *or use a later available event as listed in the GDS-M ECU Update screen if one is available. 698* Service Procedure: 1. Perform GDS Mobile software update per TSB 15-GI-001. 2. After successful completion of ECM software update, check for Diagnostic Trouble Codes in ALL menus and erase any DTC. 3. Confirm normal vehicle operation. NOTICE You must initially perform GDS-M ECM Update in Auto Mode. If the ECM Update starts but then fails in Auto Mode, perform the update in Manual Mode to recover. ! WARNING GDS-M Vehicle Battery Low Voltage Warning: When the vehicle battery is lower than 12 volts, the GDS-M will trigger a Low Battery Voltage Warning. If this Warning occurs, A. Connect the battery to a fully charged battery jump pack or GR8 charger using “Power Supply Mode” to continue the software update. OR B. Select “BACK” to exit the SW update. Then, start the engine and idle with the headlights on for 20 minutes. Return to the SW update after charging the battery. TSB #: 21-01-043H Page 2 of 3 SUBJECT: ECM SOFTWARE UPDATE – FUEL ADAPTATION LEARNING AND BLOWER MOTOR CONTROL LOGIC (SERVICE CAMPAIGN T6R) SUBJECT: ECM ROM ID Information Table: MODEL 21MY Elantra (CN7/CN7A) ENGINE 2.0L ATK ROM ID PCM P/No. OLD NEW 39171-2JCB0 CNCVD0AMF3XCSFEA CNBVD0AMF3XCSFDA CNCVD0AMF3XCSFFA CNCVD0AMF3XCSFFB 39171-2JCB5 CNCVD0AMFCXCSFEA CNBVD0AMFCXCSFDA CNCVD0AMFCXCSFFA CNCVD0AMFCXCSFFB 39173-2JCB0 CNCVD0ASF3XCSFEA CNBVD0ASF3XCSFDA CNCVD0ASF3XCSFFA CNCVD0ASF3XCSFFB 39171-2JCC0 CNCWD0AMF3XCSFEA CNBWD0AMF3XCSFDA CNCWD0AMF3XCSFFA CNCWD0AMF3XCSFFB 39171-2JCC5 CNCWD0AMFCXCSFEA CNBWD0AMFCXCSFDA CNCWD0AMFCXCSFFA CNCWD0AMFCXCSFFB 39173-2JCC0 CNCWD0ASF3XCSFEA CNBWD0ASF3XCSFDA CNCWD0ASF3XCSFFA CNCWD0ASF3XCSFFB 39171-2JBB5 CNCWD0AMFCXCSFEA CNBWD0AMFCXCSFDA CNCWD0AMFCXCSFFA CNCWD0AMFCXCSFFB 39171-2JBC0 CNCWD0ASF3XCSFEA CNBWD0ASF3XCSFDA CNCWD0ASF3XCSFFA CNCWD0ASF3XCSFFB 39171-2JBD5 CNCVD0AMFCXCSFEA CNBVD0AMFCXCSFDA CNCVD0AMFCXCSFFA CNCVD0AMFCXCSFFB 39171-2JBE0 CNCVD0ASF3XCSFEA CNBVD0ASF3XCSFDA CNCVD0ASF3XCSFFA CNCVD0ASF3XCSFFB Manual Mode Password Information Tables: EVENT # #698 MENU PASSWORD CN7(a) 2.0 MPI -IMMO 39173-2JCC0, 39171-2JBC0 9801 CN7(a) 2.0 MPI -IMMO 39173-2JCB0, 39171-2JBE0 9803 CN7(a) 2.0 MPI +IMMO 39171-2JCC0 9806 CN7(a) 2.0 MPI +IMMO 39171-2JCC5, 39171-2JBB5 9807 CN7(a) 2.0 MPI +IMMO 39171-2JCB0 9808 CN7(a) 2.0 MPI +IMMO 39171-2JCB5, 39171-2JBD5 9809 TSB #: 21-01-043H Page 3 of 3 SUBJECT: