- Joined
- Jun 2, 2012
- Messages
- 25,363
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- Location
- canada
- Vehicle Year
- 1994
- Make / Model
- Ford
- Transmission
- Manual
There is only 2 parts to the system, the 4x4 CM, you just changed, and the shift motor
And the 4WD light will flash if 4x4CM sends the shift motor voltage(relay clicks) and shift motor doesn't move.
The switch is just 3 resistors and the 4WD Lights should flash if 4x4CM doesn't get back any voltage from switch when key is turned on
4x4CM sends 5volts to switch with key on, these are the voltage readings the 4x4CM will get back from switch
3.86v for 2wd
2.94v for high
1.76v for low
If 4x4CM gets no voltage then it would flash 4WD lights
This is not a complicated system, compared to some, lol
I think your "new" 4x4CM is bad, especially if its not "clicking"
Not unheard of
Whats the part number on it?
I am showing last part number for Ranger 4x4CM was 8L5Z-7E453-A, so a 2008 number, previous was 7L5Z-7E453-A so 2007 number
And the 4WD light will flash if 4x4CM sends the shift motor voltage(relay clicks) and shift motor doesn't move.
The switch is just 3 resistors and the 4WD Lights should flash if 4x4CM doesn't get back any voltage from switch when key is turned on
4x4CM sends 5volts to switch with key on, these are the voltage readings the 4x4CM will get back from switch
3.86v for 2wd
2.94v for high
1.76v for low
If 4x4CM gets no voltage then it would flash 4WD lights
This is not a complicated system, compared to some, lol
I think your "new" 4x4CM is bad, especially if its not "clicking"
Not unheard of
Whats the part number on it?
I am showing last part number for Ranger 4x4CM was 8L5Z-7E453-A, so a 2008 number, previous was 7L5Z-7E453-A so 2007 number