Expedition 4WD V8-4.6L SOHC VIN W (1999)
Seat Memory Switch: Testing and Inspection
Remove the memory set switch.
Memory Set Switch
Measure the resistance between the following indicated terminals while pressing the requested switches.
Switch
Terminals
Memory Switch 1
6 and 4
Memory Switch 2
6 and 3
Memory Set Switch
6 and 1
The resistance should be less than 5 ohms for each switch position.
If the resistance is not less than 5 ohms for each switch, replace the switch; otherwise, return to the calling pinpoint test.
Switch
Terminals
Memory Switch LED
8 and 9
NOTE: Refer to multimeter user's manual for testing diodes.
To check the memory set switch LED, connect the positive meter lead to terminal 8 and the negative lead to terminal 9. The meter should indicate
greater than 0.3 volts. Reversing the leads, the meter should read OL.
If the meter readings are not as indicated above, replace the switch; otherwise, return to the calling pinpoint test.
