A/T - Surge/Sag/Shift Bump
NUMBER: 18-007-01GROUP: Vehicle Performance
DATE: Feb. 23, 2001
SUBJECT:
Transaxle Shift Quality Improvements
OVERVIEW:
This bulletin involves reprogramming the Transmission Control Module (TCM).
MODELS:
2001 (JR) Sebring/Stratus Sedan/Sebring Convertible
2001 (LH) Intrepid/Concorde/LHS/300M
2001 (PT) PT Cruiser
NOTE:
THIS INFORMATION APPLIES TO MODELS BUILT PRIOR TO THE FOLLOWING: JR - DEC. 7, 2000 (MDH1207XX)/LH - DEC. 12, 2000 (MDH1212XX)/PT - FEB. 8, 2001 (MDHO2O8XX).
SYMPTOM/CONDITION:
Shift schedule improvements have been incorporated to address the following:
^ JR/PT - Some vehicles may exhibit tachometer jumpiness or surge with or without cruise control. It may be most noticeable with the cruise control engaged. This repair includes throttle rate changes to reduce torque converter clutch control busyness. This change will reduce clutch control on/off cycling due to minor throttle rate changes.
^ LH - Some vehicles may exhibit soft (sag) 3-1 or 2-1 kickdowns during low speed high throttle conditions. This repair improves low speed, 24 to 32 kph (15 to 20 mph), high throttle 3-1 or 2-1 kickdown. This provides a smoother and crisper shift.
^ LH - Some vehicles may exhibit 2-1 coastdown bump. This repair improves the 2-1 coastdown shift between 3 to 10 kph (2 to 6 mph). This provides a smoother coastdown shift at low speed.
DIAGNOSIS:
If Diagnostic Trouble Codes (DTC's) are present, record them on the repair order and repair as necessary before proceeding further with this bulletin. If the condition(s) are described by the customer, perform the Repair Procedure.
PARTS REQUIRED:
EQUIPMENT REQUIRED:
NOTE:
THE MDS2 MUST BE OPERATING WITH CIS CD2078 OR HIGHER.
1. Flash the TCM using the MDS2 (Mopar Diagnostic System) and DRBIII(R) (Scan Tool).
NOTE:
THE FOLLOWING STEPS ARE REQUIRED BY LAW.
2. Type the necessary information on the Authorized Software Update Label p/n 04669020 (Fig. 1). Attach the label to the TCM and cover it with the clear plastic overlay. Type the necessary information on the Authorized Modification Label p/n 04275086 (Fig. 2) and attach the label near the VECI label.
POLICY:
Reimbursable within the provisions of the warranty.
TIME ALLOWANCE:
FAILURE CODE: