RAM 2500 Truck 4WD L6-5.9L DSL Turbo VIN 6 (1999)
Technical Service Bulletin # 21-08-00
Date: 000901
A/T - 47RE TCC Delayed Lock-Up/MIL ON P1740.
NUMBER: 21-08-00
GROUP: Transmission
DATE: September 1, 2000
THIS BULLETIN SUPERSEDES TECHNICAL SERVICE BULLETIN 21-19-99, DATED
NOV. 12, 1999, WHICH SHOULD BE REMOVED FROM YOUR FILES AND NOTED IN
THE 1999 TECHNICAL SERVICE BULLETIN MANUAL (PUBLICATION NO. 81-699-00004). ALL REVISIONS ARE HIGHLIGHTED WITH
**ASTERISKS** AND INCLUDE A REVISION TO THE SEPARATOR PLATE PART NUMBER AND VERIFICATION OF SLOT WIDTH.
SUBJECT:
47RE Delayed TCC Lock-Up And/Or MIL P1740 = TCC or O/D Solenoid Performance
OVERVIEW:
This bulletin involves the replacement of the transmission valve body upper housing separator plate.
MODELS:
1999 - 2000 (BR/BE) Ram Truck
NOTE:
THIS INFORMATION APPLIES TO VEHICLES BUILT FOR THE CALIFORNIA MARKET (NAE), EQUIPPED WITH A 5.9L-24V DIESEL
ENGINE AND BUILT BETWEEN MARCH 2, 1999 (MDH 0302XX) AND OCTOBER 1, 1999 (MDHIOO1XX).
SYMPTOM/CONDITION:
The customer may experience a delayed torque converter clutch engagement (lock-up). This condition may illuminate the Malfunction Indicator Lamp
(MIL) due to Diagnostic Trouble Code (DTC) P1740 - TCC or O/D Solenoid Performance. In some situations, the customer may describe the condition
as a lack of a transmission shift (TCC lock-up) between 48 to 80 km/h (30 to 50 mph).
The transmission valve body upper housing separator plate was revised, with a wider (12 mm or 0.470 inches) slot in the lockup vent circuit, to improve
fluid flow in the torque converter clutch.
PARTS REQUIRED:
EQUIPMENT REQUIRED:
POLICY: Reimbursable within the provisions of the warranty.
TIME ALLOWANCE:
FAILURE CODE: P8 - New Part
Diagnosis
1.
With a DRB III(R) scan tool, verify that the MIL is caused by DTC P1740 - TCC or O/D Solenoid Performance.
2.
If the MIL is due to DTC P1740, then with the DRB III(R), proceed to build a Custom Display. The Custom Display that is created will be used to
monitor the engine speed input to the transmission and the transmission output speed when the torque converter clutch engagement occurs.
3.
The Custom Display should include the following sensors and input/output displays:
a.
PCM Engine RPM (found in the Sensors Menu)
