PCM - NOx Emissions Test Failure: Overview

NUMBER: 18-26-99

GROUP: Vehicle Performance

DATE: Dec. 31, 1999

SUBJECT:
NOx Emission Failure When Performing An ASM Type I/M Emission Test

OVERVIEW:
This bulletin involves selectively erasing and reprogramming the Powertrain Control Module (PCM) with new software.

MODELS:
1998 - 1999 (FJ) Avenger/Sebring

NOTE
THIS INFORMATION APPLIES TO MODELS EQUIPPED WITH A 2.5L ENGINE, CALIFORNIA EMISSIONS PACKAGE (SALES CODE NAE OR NBT) AND BUILT PRIOR TO DEC. 3, 1998 (MDH1203XX).

DISCUSSION:
Some States have implemented an ASM type of vehicle emissions test for their I/M (inspection/maintenance) testing programs. This test may fail the above models for NOx emissions. If a customer brings their vehicle in due to this failure, and no DTC's or other reasons are found for this failure, perform the Repair Procedure.

NOTE
WHENEVER A POWERTRAIN CONTROL MODULE (PCM) IS REPLACED, THE SOFTWARE OF THE REPLACEMENT CONTROLLER MUST BE VERIFIED FOR THE LATEST REVISION LEVEL. USE THE FLASH PROCEDURE TO UPDATE REPLACED CONTROLLERS AS NECESSARY.

PARTS REQUIRED:

1 04669020 Label, Authorized Software Update
1 04275086 Label, Authorized Modification

EQUIPMENT REQUIRED:

1 CH6000 Scan Tool (DRB III)
1 CH7035 General Purpose Interface Bus Cable (GPIB)
1 CH7O1O J1962 MMC Cable
1 MDS2

NOTE
THE MDS2 AND DRB III ARE REQUIRED TO PERFORM PART OF THIS REPAIR. THE MDS2 SYSTEM MUST BE OPERATING AT CIS CD2048 OR HIGHER.

POLICY: Reimbursable within the provisions of the warranty.

TIME ALLOWANCE:
Labor Operation No: 08-19-44-99 Module Reprogram 0.5 Hrs.

FAILURE CODE: FM - Flash Module