Hello all,
My four wheel drive isn’t working and the normal troubleshooting steps aren’t sufficient. I’m doing these tests with the truck in 4hi and the key in the on position. I have the two front tires off the ground. When in 4hi the front driveshaft doesn’t spin (back tires on the ground). I can use a socket and engage the front end and this engages both tires and I can see the front driveshaft moving. Also with the front diff engaged, I checked the switch for the light and it works also.
The two abnormalities are, the actuator acts like a shorted wire when I connect 12v. I’m assuming this is a bad actuator, but I’m also not getting 12V from the transfer case (light blue wire). The transfer case switch is working correctly. I pulled it out and checked it with a multimeter. However, the switch isn’t getting 12V either.
Looking at the schematic, it appears that 12V comes in on a brown wire from the convenience center. I found that brown wire, (measuring continuity) and it’s doesn’t have 12V.
I do have 12V on pin 420 on the front axle diff solenoid. This goes to the tic/stop switch. This part throws me off because this would be a second 12v source.
Anyone have any thoughts? Thanks I’m advance.
My four wheel drive isn’t working and the normal troubleshooting steps aren’t sufficient. I’m doing these tests with the truck in 4hi and the key in the on position. I have the two front tires off the ground. When in 4hi the front driveshaft doesn’t spin (back tires on the ground). I can use a socket and engage the front end and this engages both tires and I can see the front driveshaft moving. Also with the front diff engaged, I checked the switch for the light and it works also.
The two abnormalities are, the actuator acts like a shorted wire when I connect 12v. I’m assuming this is a bad actuator, but I’m also not getting 12V from the transfer case (light blue wire). The transfer case switch is working correctly. I pulled it out and checked it with a multimeter. However, the switch isn’t getting 12V either.
Looking at the schematic, it appears that 12V comes in on a brown wire from the convenience center. I found that brown wire, (measuring continuity) and it’s doesn’t have 12V.
I do have 12V on pin 420 on the front axle diff solenoid. This goes to the tic/stop switch. This part throws me off because this would be a second 12v source.
Anyone have any thoughts? Thanks I’m advance.