Section 01-14B: Door Lock Control System, Electronic
1996 F-150, F-250, F-350 and Bronco Workshop Manual
DIAGNOSIS AND TESTING

Symptom Chart — Electronic Door Lock System

NOTE: Use Rotunda 73 Digital Multimeter 105-R0051 and Dwell-Tach-Volt-Ohms Tester 164-R0254 or equivalents to perform electrical pinpoint tests.

ELECTRONIC DOOR LOCK SYSTEM
ConditionPossible SourceAction
  • Quick Test
    —
  • Interior Lamps Do Not Turn On with Remote Entry Functions with Ignition Key OFF; They Only Work When a Door Is Opened
  • Mechanical condition.
  • Open/short circuit.
  • Switch.
  • Remote keyless entry module.
  • Interior Lamps Do Not Turn On Only When Door Is Opened from Inside the Vehicle and Ignition Key OFF; the Interior Lamps Do Work with All Other Functions
  • Open/short circuit.
  • Connections.
  • Locks Bind When Manually Operated
  • Mechanical condition.
  • Open/short circuit.
  • Switch.
  • One or More Switches Do Not Work
  • Remote keyless entry module.
  • Circuit.
  • Switches.
  • Locks Will Only Lock or Unlock
  • Circuit.
  • Switches.
  • Locks Do Not Operate in Freezing Weather
  • Mechanical condition.
  • Open/short circuit.
  • Switch.
  • Connections.
  • Remote keyless entry module.
  • Locks Only Work When Engine Is Running
  • Connections.
  • Switches.
  • Locks Work Intermittently
  • Connections.
  • Switches.
  • All Doors Lock Then Unlock Every Time Ignition Key Is Turned to RUN/ACCESSORY
  • Open/short circuits.
  • Remote keyless entry module.
  • Remote Features Will Not Work at All, but All Other Features Operational
  • Transmitter.
  • Antenna connection.
  • Remote Entry Functions Do Not Operate in Freezing or Extremely Hot Weather
  • Remote keyless entry module.
  • Transmitter.
  • Alarm Sounds Falsely, but All Other Functions Operate
  • Open/short circuit.
  • Switches.
  • If All of the Above Are OK
  • Mechanical condition.
  • Open/short circuit.
  • Switch.
  • Connections.
  • Remote keyless entry module.