Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSFORD1999CROWN VICTORIA LX, 4.6 9REPAIR AND DIAGNOSIS (SINGLE PAGE)TRANSMISSIONAUTOMATIC TRANSDIAGNOSIS - 4R70W AUTOMATIC TRANSMISSIONSYSTEM TESTSTEST C: DIGITAL TRANSMISSION RANGE (TR) SENSOR
1999 Ford Crown Victoria LX, 4.6 9
Test C: Digital Transmission Range (Tr) Sensor
1999 Ford Crown Victoria LX, 4.6 9SECTION Test C: Digital Transmission Range (Tr) Sensor
NOTE:
DTCs P0705 and P0708 CANNOT be set by an improperly adjusted TR sensor.
- Check Trouble Codes
Ensure ignition switch is turned to OFF position and transmission is in "P" position. Perform KOEO SELF-TEST and record DTCs. If P0705 and P0708 are the only DTCs recorded, go to step 4. - Check Digital TR Sensor Alignment
With ignition switch turned to OFF position and selector lever in "P" position, ensure digital TR sensor wiring harness connector is fully seated. Apply parking brake. Place selector lever in "N" position. Disconnect shift cable/linkage from the manual lever. Ensure digital TR sensor is adjusted properly. See ADJUSTMENTS in appropriate AUTOMATIC TRANSMISSION SERVICING article in TRANSMISSION SERVICING. If digital TR sensor is adjusted properly, leave shift cable/linkage disconnected and go to next step. If digital TR sensor is not adjusted properly, adjust digital TR sensor. Place selector lever in "P" position. Erase all trouble codes. See CLEARING CODES . Repeat QUICK TEST . - Check Shift Cable/Linkage Adjustment
Place manual lever in overdrive position (3 detent positions back from Park). Place selector lever in "D" position. Reconnect shift cable/linkage. Ensure shift cable/linkage is properly adjusted. If shift cable/linkage adjustment is okay, go to next step. If shift cable/linkage adjustment is not okay, adjust shift cable/linkage. See ADJUSTMENTS in appropriate AUTOMATIC TRANSMISSION SERVICING article in TRANSMISSION SERVICING. Then go to next step. - Check Electrical Signal Operation
Ensure ignition switch is turned to OFF position. Place selector lever in "P" position. Disconnect digital TR sensor connector. Inspect connector for damage, pushed out terminals, loose wires, missing or damaged seals, or corrosion. Repair as necessary. If connector was okay and you were directed here to diagnosis a DTC, go to next step. If connector was okay and you were directed here to diagnose a 4WD Low neutral sense concern, starting or backup light problem, go to step 10. If connector was repaired, erase all trouble codes. See CLEARING CODES . Repeat QUICK TEST .
NOTE:
If PID TR_D changes when wiggling harness, tapping on sensor or driving vehicle, problem may be intermittent.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.