List | Specifications | Care
and Feeding | Modifications | Vendors
TSB 98-6-5 AX4N Converter
Printable View (37 KB)
- TRANSAXLE - AX4N - TORQUE CONVERTER CLUTCH NOT ENGAGING AND/OR
DIAGNOSTIC TROUBLE CODE (DTC) P0741 OR P1744 STORED IN MEMORY
MARCH 30, 1998
|1996-98 CONTINENTAL, SABLE
This TSB article is being republished in its entirety to correct the
direction of a valve shown in Figure 1.
Figure 1 - Article 98-6-5
Diagnostic Trouble Code (DTC) P0741 or P1744 may be stored in memory. This
may be caused by the Powertrain Control Module (PCM) unsuccessfully attempting
to engage the torque converter clutch 5 consecutive times. The torque converter
clutch may not engage if one or more of the following conditions exist:
- Stuck converter regulator valve
- Stuck solenoid regulator valve
- Stuck bypass clutch control valve
- Worn pump shaft or damaged seals
- Incorrect Torque Converter Clutch (TCC) solenoid
- Incorrect or damaged internal wiring harness
- Incorrect gear ratio
Refer to the following Diagnostic Procedure for details.
- For DTC P0741 and P1744, perform Pinpoint Test "C" and refer to
Diagnostic Routines 240 and 340 in Section 07-01 of the appropriate
Taurus/Sable or Continental Service Manual.
- Remove the transaxle lower pan and check for excessive debris in the pan.
- Remove the main control cover and main control.
- Check for pump shaft wear or damaged seals.
- Inspect the main control for a stuck converter regulator valve and
solenoid regulator valve located in bore "A." Refer to Figure 1.
- Inspect the bypass clutch control valve located in bore "D."
Refer to Figure 1.
- Clean the main control and make sure all valves move freely. Do not sand,
stone, or file valves or bores in the main control.
- Inspect for the correct TCC solenoid. Refer to TSB
97-13-12 for TCC resistance. TCC resistance should be 0.98-1.6 ohms for
1996-97 Taurus/Sable and 1996 Continental; 13-24 ohms for 1998 Taurus/Sable
and 1997-98 Continental.
- If the transaxle has been exchanged, refer to TSB
- To verify the concern has been corrected, the drive cycle must be done at
least 5 times. The PCM will not set a torque converter clutch code until it
fails to engage 5 consecutive times.
OTHER APPLICABLE ARTICLES:
97-13-12 , 97-23-7
206000, 501000, 502000, 503000, 504000, 698298