Ignition "OFF".
Remove "TRANSAXLE RANGE SWITCH"
Measure the resistance between each teminal of the sensor
Specification : approx. 0 Ω
Is resistance within specifications ?
YES
Substitute with a known-good PCM/TCM and check for proper operation. If the problem is corrected, replace PCM/TCM and then go to "Verification of Vehicle Repair" procedure.
NO
Replace "TRANSAXLE RANGE SWITCH" as necessary and Go to "Verification Vehicle Repair" procedure