Shift Schedules

As mentioned earlier, the TCM has programming that allows it to select a variety of shift schedules. Shift schedule selection is dependent on the following:

• Shift lever position
• Throttle position
• Engine load
• Fluid temperature
• Software level

As driving conditions change, the TCM appropriately adjusts the shift schedule. Refer to the following 45RFE Shift Schedule and 42RLE Shift Schedule tables (Fig 1 and Fig 2 ) to determine the appropriate operation expected, depending on driving conditions.

Fig 1: 45RFE Shift Schedule

Courtesy of DAIMLERCHRYSLER CORP.

Fig 2: 42RLE Shift Schedule

Courtesy of DAIMLERCHRYSLER CORP.