Engine Controls - Cold Engine Hesitation
NUMBER: 18-021-02GROUP: Vehicle Performance
DATE: July 22, 2002
THIS BULLETIN IS BEING PROVIDED IN ADVANCE. THE MDS2 MUST BE OPERATING WITH CIS CD2114 OR HIGHER, AVAILABLE AUGUST 19, 2002.
THIS BULLETIN SUPERSEDES TECHNICAL SERVICE BULLETINS 18-023-01, DATED SEPTEMBER 17, 2001 AND TSB 18-011-02 DATED FEBRUARY 25, 2002, BOTH OF WHICH SHOULD BE REMOVED FROM YOUR FILES.
SUBJECT:
Flash: Cold Engine Hesitation
OVERVIEW:
This bulletin involves selectively erasing and reprogramming the JTEC Powertrain Control Module (PCM) with new software (00Cal17A, 01Cal02, and 01Cal14D).
MODELS:
2000 - 2001 (BR\BE) Ram Truck
NOTE:
THIS BULLETIN APPLIES TO 2000 - 2001 (BR/BE) RAM TRUCKS EQUIPPED WITH A 5.2L ENGINE AND MANUAL TRANSMISSION (ELF).
SYMPTOM/CONDITION:
Some engines may exhibit a hesitation upon acceleration after a cold start up (engine at ambient temperature.)
NOTE:
CUSTOMERS SHOULD BE MADE AWARE THAT THIS ACTION ELIMINATES THE SHIFT INDICATOR LIGHT (SIL). THERE WILL BE NO OTHER EFFECT ON VEHICLE OPERATION OR PERFORMANCE OTHER THAN THE ELIMINATION OF THE COLD HESITATION CONDITION. THE SIL WILL STILL BE VISIBLE DURING THE IGNITION START UP BULB CHECK SEQUENCE.
PARTS REQUIRED
EQUIPMENT REQUIRED
REPAIR PROCEDURE:
1. Connect the battery to a charger and charge to 14 volts.
2. Flash the controller using the MDS2 (Mopar Diagnostic System) and DRBIII(R).
NOTE:
DUE TO THE PCM REPROGRAMMING PROCEDURE, A DTC MAY BE SET IN OTHER MODULES (EATX, BCM, MIC, SKIM, ETC.) WITHIN THE VEHICLE, IF SO EQUIPPED. SOME DTC'S MAY CAUSE THE MIL TO ILLUMINATE. ALL DTC'S RELATE TO A LOSS OF COMMUNICATIONS WITH THE MODULE THAT IS BEING REPROGRAMMED. CHECK ALL MODULES, RECORD THE FAULTS, AND ERASE THESE FAULTS PRIOR TO RETURNING THE VEHICLE TO THE CUSTOMER. ERASE ANY FAULTS IN THE PCM ONLY AFTER ALL OTHER MODULES HAVE HAD THEIR FAULTS ERASED.
NOTE:
THE FOLLOWING STEPS ARE REQUIRED BY LAW.
3. Type the necessary information on the "Authorized Software Update Label" p/n 04669020 (Fig. 1). Attach the label to the PCM and cover the label with the clear plastic overlay.
4. Type the necessary information on the "Authorized Modification Label" p/n 04275086 and attach the label near the VECI label (Fig. 2).
POLICY:
Reimbursable within the provisions of the warranty.
TIME ALLOWANCE
FAILURE CODE