ECM CALIBRATION: SHIFTING ENHANCEMENT ± TC004-03 Revised August 4, 2003
Page 6 of 6
5.Reset the ECM (PCM) learned values using the diagnostic tester. Refer to the
procedures below.
± The sample screen prints seen below are the 12.01a software version and may
differ from subsequent software versions.
NOTE:
Failure to reset the ECM (PCM) memory will result in continued ATM shifting complaints.
DO YOU WISH TO
RESET THE ECM?
[YES] to CONTINUE
[NO] to EXIT
2: CUSTOMIZE
3: ECU REPROGRAMFUNCTION SELECT FOR
NORTH AMERICA
B
*APPLICATION SELECT*
A
1: DIAGNOSISDIAGNOSTIC MENU
ENGINE
C
DO NOT USE THIS
FUNCTION UNLESS
INSTRUCTED BY
REPAIR MANUAL.RESET MEMORY
E
RESET MEMORY
NOTICE
D
[YES]
F
1: OBD/MOBD
3: CARB OBD II
4: BREAK±OUT BOX
5: NVH
6: AUTOPROBE
7: 02 RPM CHECK
8: SNAPSHOT REVIEW
9: SETUP
0: GAS ANALYSIS2: ENHANCED OBD II1: DATA LIST
2: DTC INFO
3: ACTIVE TEST
4: SNAPSHOT
5: SYSTEM CHECK
6: RESET MEMORY
7: MONITOR STATUS
8: CHECK MODE
6: RESET MEMORY
ONLY USE AFTER
REPLACING THE ENGINE,
AUTO TRANS, OR ECM
ON CERTAIN VEHICLES.EXECUTING THIS
FUNCTION WILL RESET
THE LEARNED VALUES
IN THE ECM.RESET MEMORY
RESETTING COMPLETE
PRESS
[ENTER]
Figure 3. ECM (PCM) Learned Values Reset
6. Follow the procedures outlined in TSIB No. EG012±04, ªEntering VIN During ECM
(PCM) Replacement and/or DTC P0630,º
and write the VIN to the ECM (PCM).
7. Start the engine and warm it up to normal operating temperature before test±driving.
8. Test drive vehicle to confirm proper vehicle operation.
9. Enter the required information on the Authorized Modifications Label and affix it to the
vehicle at the location shown in Figure 1 (page 4). The Authorized Modifications
Label is available through the MDC, P/N 00451±00001±LBL.
10. Calibration update is complete.
NOTE:
Select premium unleaded gasoline with an Octane Rating of 91 (Research Octane
Number 96) or higher for optimum engine performance.
The effect of the new calibration may become more apparent after several days
of driving as the ECM (PCM) ºlearned valuesº are re±established from the
customer 's driving. Repair
Procedure
(Continued)
