Rear O2 Sensor Diagnostics/OBD II Protocol (18-35-95)

WARNING: This page is about the Sebring LX, 2.0 Y, Automatic, which is a different variant/trim than selected.

Publication date: 1995-12-15
Reference number: 18-35-95

REAR O2 SENSOR DIAGNOSTICS/OBD II PROTOCOL

TECHNICAL SERVICE BULLETIN

Reference Number(s): 18-35-95, Date of Issue: December 15, 1995

REAR O² SENSOR DIAGNOSTICS/OBD II PROTOCOL

Model(s): 1996 Chrysler (FJ) Sebring

1996 Dodge (FJ) Avenger

1996 Eagle (FJ) Talon

1996 Dodge (PL) Neon

1996 Plymouth (PL) Neon

Group: Vehicle Performance

Bulletin No.: 18-35-95

Date: December 15, 1995

NOTE: This bulletin applies to 1996 vehicles equipped with a 2.0L engine (Avenger/Sebring/Talon built prior to November 10, 1995 MDH (11-10-XX)) (Neon built prior to November 14, 1995 MDH (11-14-XX)).

SYMPTOM/CONDITION

Intermittent rear O² sensor fault, Diagnostic Trouble Code (DTC) #129 with Malfunction Indicator Light (MIL) illumination.
Inability of generic scan tool to read all Diagnostic Trouble Codes (DTC's).
Inability to store OBD II Readiness Codes.

EQUIPMENT REQUIRED

EQUIPMENT INFORMATION

Part Number	Description	Qty.
CH6000	Scan Tool (DRB III)	1
CH7035	General Purpose Interface Bus Cable (GPIB)	1
CH7010	J1962/MMC Cable	1
4669020	Label - Authorized Software Update	1
4275086	Label - Authorized Modification	1

NOTE: The Mopar Diagnostic System may be required to perform part of the repair and the system must be operating with release 18 or higher and TIL CD release 1095 or higher must be installed.

REPAIR PROCEDURE

This repair involves selectively erasing and reprogramming the Powertrain Control Module (PCM) with new software (calibration changes) for all symptoms listed.

Connect the MDS (Mopar Diagnostic System) and DRB III (Scan Tool) to the vehicle and power them up.
Use the arrow keys and select #2 MDS DIAGNOSTICS on the DRB III MAIN MENU Screen.
Use the arrow keys and select DIAGNOSTIC MENU on the MDS, then press NET MENU.
Use the arrow keys and select CONTROLLER PROGRAMMING on the MDS, then press NEXT MENU.
Use the arrow keys and select PROGRAM CONTROLLER PART on the MDS, then press NEXT MENU.
Follow the steps presented on the MDS and DRB III which will allow the DRB III to obtain the current part number of the PCM.
The MDS will display the part number of the PCM on the vehicle and the appropriate replacement part number, then press NEXT MENU to begin programming.

If the PCM on the vehicle has already been updated or programmed, a NO UPDATES AVAILABLE message will be displayed. Check the part number of the PCM on the vehicle and compare it to the part number displayed. If the PCM has already been updated, then another condition exists that will require further diagnosis and repair.

The MDS and DRB III will prompt for any operator action needed during the remainder of the programming process.
NOTE: The following steps are required by law.
Type the necessary information on the "Authorized Software Update label" P/N 4669020 shown in Fig 1 . Attach the label to the PCM and cover the label with the clear plastic overlay.
Type the necessary information on the Authorized Modification Label shown in Fig 2 , and attach the label near the VECI Label.

WARRANTY INFORMATION

POLICY: Reimbursable within the provisions of the warranty.

LABOR OPERATION NO.: 08-19-43-98

TIME ALLOWANCE: 0.5 Hrs.

FAILURE CODE: FM - Flash Module

Fig 1: Authorized Software Update Label

Fig 2: Authorized Modification Label