Chrysler and Dodge vehicles that are equipped with the 41TE, 42LE, 42RLE or 45RFE transmission have a certain degree of consistency with regard to electrical diagnosis of solenoid codes, EATX relay codes, or input- and output-shaft-speed-sensor codes. When looking at the TCM 60-way connector for each of these transmissions, you will observe the following consistency:

• TCM terminal 13 = speed-sensor ground
• TCM terminal 14 = output-speed-sensor signal
• TCM terminal 52 = input-speed-sensor signal
• TCM terminal 15 = EATX relay control
• TCM terminal 16 = EATX relay signal
• TCM terminal 17 = EATX relay signal
• TCM terminal 19 = 2/4 solenoid (except 45RFE)
• TCM terminal 20 = L/R solenoid
• TCM terminal 59 = UD solenoid (except 45RFE)
• TCM terminal 60 = OD solenoid

By becoming familiar with the typical wiring diagrams provided in figures 2, 6 and 9 and memorizing the terminals listed above, you can perform quick testing at the 60-way connector, as shown in the example in Figure 1, for a large number of vehicles spanning a period of 15 years without ever having to pull a wiring diagram. The 45RFE has additional solenoids, which caused a variation from the other three transmissions, but two of the solenoids remained consistent.

Quick testing can be done with all four of the transmissions with the input- and output-speed sensors. Factory repair manuals provide resistance values of 300-1,200 ohms for these sensors, but it has been ATSG’s experience that they measure 500-600 ohms. Relay-circuit testing is also the same with a slight exception for the 45RFE, as there is one additional signal circuit at terminal 36.

This issue provides wiring diagrams and information for the 41TE and 42LE units. The February issue will cover 42RLE and 45RFE transmissions.

For identification of pin cavities in the solenoid-body connector and their functions, refer back to Figure 3.

January 2006 Issue
Volume 23, No. 1

• Chrysler Transmissions: Consistency in Electrical Diagnosis Since 1989