Section 07-14A: Transmission Range (TR) Sensor
1996 F-Series and Bronco Equipped with E4OD and 4R70W Transmissions Workshop Manual
DIAGNOSIS AND TESTING

Symptom Chart — Transmission Range (TR) Sensor

SYMPTOM CHART — TRANSMISSION RANGE (TR) SENSOR
ConditionPossible SourceAction
  • Engine Will Not Crank in Either PARK or NEUTRAL
  • Ignition switch, wiring harnesses.
  • PERFORM ignition switch and harness continuity tests. REFER to Section 11-05.
 
  • Linkages out of adjustment.
 
  • TR sensor damaged, misadjusted, not connected, wiring harness open, damaged.
  • INSPECT for damage and connection. ADJUST TR sensor. REFER to Transmission Range (TR) Sensor in the Adjustments portion of this section. PERFORM On-Board Diagnostics. PERFORM Pinpoint Test A. SERVICE as required.
  • Engine Cranks with Transmission Range Selector Lever in Ranges Other Than PARK or NEUTRAL
  • Linkages out of adjustment.
 
  • TR sensor misadjusted.
  • ADJUST TR sensor. REFER to Transmission Range (TR) Sensor in the Adjustments portion of this section.
 
  • TR sensor damaged, wiring harness shorted.
  • INSPECT for damage. PERFORM On-Board Diagnostics. PERFORM Pinpoint Test A. SERVICE as required.
  • Backup Lamps Inoperative
  • Bulbs damaged, burnt out. Harness damaged, corroded, loose wires.
  • INSPECT bulbs and harnesses for damage corrosion, looseness. SERVICE as required.
 
  • Linkages out of adjustment.
 
  • TR sensor out of adjustment, damaged, wiring harness damaged, open, corroded.
  • ADJUST TR Sensor. REFER to Transmission Range (TR) Sensor in the Adjustments portion of this section. INSPECT for damage. PERFORM On-Board Diagnostics. PERFORM Pinpoint Test A. SERVICE as required.
  • Harsh Shifts, Firm Engagements, Improper Shift
  • Harness connector not seated properly; harness damaged, corroded.
  • INSPECT for damage. SERVICE as required.
 
  • TR sensor misadjusted, damaged.
  • ADJUST TR sensor. REFER to Transmission Range (TR) Sensor in the Adjustments portion of this section. PERFORM On-Board Diagnostics. PERFORM Pinpoint Test A. SERVICE as required.