Section 01-14A: Handles, Locks, Latches and Mechanisms | 1996 F-150, F-250, F-350, F-Super Duty and Bronco Workshop Manual |
DIAGNOSIS AND TESTING
Component Tests
Switch, Door Lock
NOTE: Remove door lock switch (14028) from the vehicle. The raised portion of the switch knob should face right, exposing the five terminals.
Use a self-powered test lamp or an ohmmeter to test the power door lock switch.
With the door lock switch in the neutral position, there should be continuity between terminals 1 and 2, and between terminals 3 and 4. Terminal 5 should be disconnected from all other terminals.
When the raised portion of the switch rocker knob is pushed (lock position), there should be continuity between terminals 1 and 5, and between terminals 3 and 4. Terminal 2 should be disconnected from all other terminals.
When the depressed portion of the switch rocker knob is pushed (unlock position), there should be continuity between terminals 1 and 2, and between terminals 4 and 5. Terminal 3 should be disconnected from all other terminals.
If the door lock switch does not test as stated, replace the door lock switch.
DOOR LOCK SWITCH TEST CHART
| To Test | Connect Self- Powered Test Light or Ohmmeter to Terminals | Move Switch to These Positions | A Good Switch Will Indicate |
|---|
| Power and Ground Checks Before Any Other Tests | 3
and
1 or 5 | Door Lock Switch
(All Positions) | Open Circuit |
| Power and Ground Checks Before Any Other Tests | 1 and 4
or
2 and 5 | Door Lock Switch
(At Rest) | Closed Circuit |
| Door Lock Switch | 3 and 4 | Lock | Closed Circuit |
| Door Lock Switch | 3 and 2 | Unlock | Closed Circuit |
There is no relay test. Power is supplied directly to the power door lock actuator (218A42) through the door lock switch located in front door trim panel (23942).
Actuator, Power, Door Lock
Apply 12 volts directly to one terminal of connector of power door lock actuator and ground the other terminal. The power door lock actuator should finish its travel in less than one second. Reverse polarity for opposite travel.
Using Rotunda 73 Digital Multimeter 105-R0051 or equivalent, the actuator current draw (stall test) should not exceed 6.2 amps. Reverse the power and ground leads to the connector and repeat test.