If no external harness or connector damage is found, check the transmission's internal wiring harness and each solenoid for damage and correct resistance. Replace any solenoids that measure incorrectly or are damaged.

TCC On/Off = 12-28 Ohms

TCC PWM = 7-20 Ohms
Earlier transmissions won't have this solenoid, so checking it will show an open circuit. (50k - ∞)

EPC = 3-6 Ohms

SS1 = 12-28 Ohms

SS2 = 12-28 Ohms

(96 & up) 3/2 downshift = 12-28 Ohms

(95 & earlier) 3/2 downshift = 7-20 Ohms