Engine Hesitation And/Or Vehicle Lacks Power With DTC P0326 Knock Sensor System Performance Set (Install Pcm Calibration) (03-T-02)

Publication date: 2003-04-16
Reference number: 03-T-02

ENGINE HESITATION AND/OR VEHICLE LACKS POWER WITH DTC P0326 KNOCK SENSOR SYSTEM PERFORMANCE SET (INSTALL PCM CALIBRATION)

TECHNICAL SERVICE BULLETIN

Reference Number(s): 03-T-02, Date of Issue: April 16, 2003

SATURN:	2000 - 2002 S-Series vehicles equipped with manual transaxles (MP2/MP3) built up to and including VIN 2Z258983 or automatic transaxles (MP6/MP7) built up to and including VIN 2Z263777
SECTION:	09 - Restraints

CONDITION

Some customers may comment about the engine lacking power when accelerating and/or engine hesitation while driving.

CAUSE

This condition may be caused by the PCM misinterpreting normal engine noise/vibration as spark knock resulting in unnecessary ignition timing retard.

CORRECTION

To correct this condition continue with procedure in this bulletin.

SERVICE PROCEDURE

Connect Scan Tool to the vehicle
Navigate to the 1.9L (LLO for DOHC, L24 for SOHC) Powertrain Menu
Select ID INFORMATION
Select CALIBRATION ID.
Read CALIBRATION ID.
- If PCM calibration ID number is listed below, reprogram the PCM with the latest calibration. For reprogramming procedures refer to the "Service Programming System (SPS)" in the Saturn Service Stall System (SSS) User Guide.
If calibration ID number is not listed below, do not reprogram the PCM. The PCM already has the correct calibration installed to correct this condition. Refer to the diagnostic procedure for DTC P0326 located in the Engine/Emission Controls section of the 2000-2002 S-Series Engine Service Manual.

21009140	21009141	21009142	21009143
21009144	21009145	21009146	21009147
21009148	21009149	21009201	21009202
21009203	21009204	21009205	21009206
21009256	21009257	21009258	21009259
21009272	21009273	21009274	21009275

WARRANTY INFORMATION

To receive credit for this repair during the warranty coverage period, submit a claim through the Saturn Dealer System for J6355 (EE PROM Reprogramming). If another procedure is performed, refer to the appropriate Electronic Labor Time Guide for the correct Labor Operation Code and Time. When another procedure is performed that requires EE PROM Reprogramming, J6355 must be claimed as a "related line" to that repair.