Diagnosis
DIAGNOSIS:Using the Mopar Diagnostic System (MDS) or the Scan Tool (DRB III) with the appropriate Diagnostic Procedure Manual, verify that all engine/transmission systems are functioning as designed. If Diagnostic Trouble Codes (DTC's) are present, record them on the repair order for future reference and repair as necessary. Inspect the transmission fluid for the correct level and red color.
If no DTC's are present, all systems are functioning correctly, transaxle fluid is the normal red color and EMCC shudder is NOT a symptom but the transaxle does have any other symptom(s) listed above, perform REPAIR PROCEDURE NO. 1.
If the transaxle fluid is discolored and/or exhibits the EMCC shudder, perform REPAIR PROCEDURE NO. 2 beginning on page 9.
EQUIPMENT/PARTS REQUIRED FOR FLASHABLE TCM'S:
1 CH5500 Flash Programming Kit
1 CH6000 Scan Tool (DRB III)
1 CH7035 General Purpose Interface Bus Cable (GPIB)
1 CH7025 DIN Cable
1 4669020 Label - Authorized Software Update
1 4275086 Label - Authorized Modification
AR 4504048 Package, Oil Filter 41TE
AR 4796730 Package, Oil Filter 42LE
AR 4467721 Fluid, Mopar Automatic Transmission - Type 7176
PARTS REQUIRED IF TCM REPLACEMENT IS NECESSARY:
PART NO. TRANS. CONTROL MODULE AND MODEL APPLICATION
AR 4686606 1993 - 1995 AA, AC, AG, AJ, AP, AS, ES, & AY
AR 4796121 1989 - 1991 AA, AC, AG, AJ, & AS with 3.0L Engine
AR 4796122 1990 - 1991 AC, AS, & AY with 3.3L & 3.8L Engine
AR 4796123 1992 AA, AC, AG, AJ, & AS with 3.0L Engine
AR 4796124 1992 AC, AS, ES, & AY with 3.3L & 3.SL Engine
**AR 5269726 1995 FJ**
AR 46061 OS 1995 JA with 2.5L Engine
AR 4797708 1993 - 1995 LH
AR 4504048 Package, Oil Filter 41TE
AR 4796730 Package, Oil Filter 42LE
AR 4467721 Fluid, Mopar Automatic Transmission - Type 7176
NOTE:
WHEN FLASHING TO OR INSTALLING THE FOLLOWING TCM P/N's:
4796121, 4796122, 4796123, and 4796124
When flashing to or installing these TCM's, it is necessary to ensure no wire is connected at CAVITY 49 of the TCM wiring harness connector. If the wire is left connected, and the vehicle is driven at speeds fast enough for the transmission to be in 4th gear/Overdrive (OD), when the brake pedal is pushed, the transmission will shift into 3rd gear or if the transmission was already in 3rd gear it will shift into OD. If the brake pedal is pushed again, the transmission will have OD enabled/disabled (whether or not an actual shift takes place depends on vehicle speed) and will change between enabled/disabled OD each time the brake pedal is pushed.
In addition to the normal TCM installation procedure, perform the following steps:
A. Remove the cover from the wiring harness connector at the TCM.
B. Locate CAVITY 49 of the TCM harness connector.
C. Cut the wire going to CAVITY 49 of the TCM wiring harness connector so there is enough room at each of the cut ends of the wire to install a piece of shrink tubing, P/N 4778570.
D. Slide a piece of shrink tubing over each cut end of the wire so the end of the wire is at the midpoint of the shrink tubing. Use an electric heat gun to shrink the tubing and seal the wire ends.
E. Install the TCM wiring harness connector cover.