Misfire Calibration - Service Information: Overview
BULLETIN NO.: 97-T-49ISSUE DATE: December, 1997
GROUP/SEQ. NO.: Engine-10
CORPORATION NO.: 786509
SUBJECT:
Service Information on 1996 Model Year Vehicles with Misfire Calibration Installed
MODELS AFFECTED:
1996 Saturns with misfire calibration installed
PURPOSE:
The misfire calibration for 1996 model year vehicles includes diagnostic enhancements that were not included in the 1996 model year production calibration. As a result, some diagnostic trouble codes (DTCs) will be added once the misfire calibration is downloaded in 1996 model year vehicles.
The following DTCs are added for the 1996 misfire calibration and will only set if the misfire calibration is installed:
The current 1996 Powertrain Controls Service Manual does not contain diagnostic procedures for the added DTCs. Refer to the diagnostic procedures when diagnosing the additional DTCs for 1996 model year vehicles with the misfire calibration installed.