Pcm Reprogramming Summary & Fuel Recommendations (TSB-96-13-023)

WARNING: This page is about the Eclipse GS-T, Automatic, which is a different variant/trim than selected.

Publication date: 1996-12-01
Reference number: TSB-96-13-023

PCM REPROGRAMMING SUMMARY & FUEL RECOMMENDATIONS

TECHNICAL SERVICE BULLETIN

Reference Number(s): TSB-96-13-023

PCM REPROGRAMMING SUMMARY AND FUEL RECOMMENDATIONS

Model(s): 1995-96 Mitsubishi Eclipse

Group: 13 - Fuel

Bulletin No.: TSB-96-13-023

Date: December, 1996

VEHICLES AFFECTED

1995-96 Eclipse 2.0L DOHC non-turbocharged models.

PURPOSE

Poor driveability and/or certain Diagnostic Trouble Codes (DTCs) may be due to software programming in the Powertrain Control Module (PCM). The DTC may be a "false" code set in the PCM. In most cases, using the appropriate PCM reprogramming cartridge to recalibrate the PCM will correct these conditions.

Other Technical Service Bulletins have been previously issued to address PCM reprogramming to correct driveability and/or DTCs on affected vehicles. This bulletin summarizes the most up-to-date PCM reprogramming information, with reference to the appropriate TSB number.

NOTE: MMSA recommends using regular unleaded fuel (without alcohol) in 1995 Eclipse models equipped with 2.0L DOHC non-turbocharged engine. Premium unleaded or higher octane unleaded fuel may negatively affect driveability. This fuel recommendation does not apply to 1996 models that have been reprogrammed with cartridge MIT992012.

PROCEDURE

If any Diagnostic Trouble Codes (DTCs) are set, follow the appropriate troubleshooting steps in Section 13 in the Eclipse service manual. Make any necessary repairs described in the service manual, then continue with Step 2.
Refer to PCM REPROGRAMMING SUMMARY of this bulletin for up-to-date PCM reprogramming information for specific DTCs and/or driveability conditions. Then refer to the appropriate TSB referenced in the table for repair instructions.
For 1995 models with hard to start and/or rough idle condition at cold ambient temperatures or poor driveability at any ambient temperature:
1. Follow the PCM procedures in TSB-96-13-003 to determine whether PCM requires replacement or reprogramming. Replace or reprogram as required.
2. Remove any moisture from the throttle body, bypass air port, intake manifold, EGR valve, and EGR pipe.
3. Test drive the vehicle to verify if driveability condition has been eliminated. If condition is still present, replace the fuel pressure regulator listed in the PARTS INFORMATION section of this bulletin.

PCM REPROGRAMMING SUMMARY

Refer to the reference TSB number for diagnostic/repair/reprogramming instructions. Use the appropriate cartridge for the model year and DTCs/vehicle conditions.

1995 MODELS PCM REPROGRAMMING SUMMARY PARTS INFORMATION

Possible DTC(s)	Vehicle Conditions	Cartridge Number	Reference TSB No.
DTC 46, 111, 113, 126	1. Stall during warm-up.	MIT992009	TSB-96-13- 003 * issued October, 1996.
2. Rough idle.
3. Sudden rpm rise when A/C is turned on.
4. Ticking noise at idle and/or increased throttle effort from idle.
5. On M/T, surge under light throttle or sudden rpm drop after clutch release.

NOTE: (* ) - Depending on the PCM part number installed in the vehicle, PCM may require replacement. Refer to TSB-96-13-003, which contains the most up-to-date PCM replacement and reprogramming information for 1995 models. Supersedes TSB-95-13-001.

1996 MODELS

Possible DTC(s)	Vehicle Conditions	Cartridge Number	Reference TSB No.
DTC 46, 104, 106-110, 129,P0401, P0703	1. Stall during warm-up.	MIT992012	TSB-96-13- 022 * issued December, 1996.
2. Rough idle.
3. Rpm surge or flare at low speeds.
4. Generic scan tool cannot read all DTCs.
5. PCM does not store OBD-II readiness codes.

NOTE: (* ) - TSB-96-13-022 contains the most up-to-date PCM reprogramming information for 1996 models. Supersedes TSB 96-13-002.

PARTS INFORMATION

The following materials, which are contained in Reprogramming Kit MIT992000-A, are required in order to reprogram a PCM:

PARTS INFORMATION

Description	Part Number
Reprogramming Unit	Tool No. MIT992000
Reprogramming Cartridge	Tool No. MIT992009 (1995 models)or Tool No. MIT992012 (1996 models)
EATX III/Engine Harness	Tool No. MIT992001
"Engine Compartment" and "Control Module" Labels	Part No. MSSF-023G-00
Fuel Pressure Regulator Assembly	M04883076

NOTE: The following fuel pressure regulator replacement part applies only to 1995 affected vehicles:

WARRANTY INFORMATION

Normal warranty procedures apply. For specific claim information, refer to the appropriate referenced TSB listed in PCM REPROGRAMMING SUMMARY TABLE, this bulletin.