YotaTech Forums - View Single Post - Help: Do I need to Replace Rear Actuator on 99 4runner Ltd

EZs4runr · 11-25-2007, 06:05 PM

Pulled the plug on the actuator and used 12volt source to check and see if I had a bad actuator. With following info posted by "Pilottech" here... it works Perfect!
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"With the plug to the actuator in your hand and the lock of the plug in the up position the pins are #'d backwards 321 on the top row and 654 on the bottom. With + on pin 3 and - on pin 2 the DC motor will drive the actuator into 4WD and then +2 and -3 it will go back to 2HI. This will tell you if the actuator motor works or not. If the motor works then you can look other places."
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I have tested the front actuator, rear actuator, and both of these are good. On xfer case actuator I apply + power to pin 2 and - to pin 3 and that baby disengaged 4x4 perfect. Did the reverse and went back in. Back and forth and it worked great. Disengaged it, then plugged everything back in and 4x4 on dash stopped blinking. Did a quick test, Car turned on, and push the button for AWD and it went on, then I turned it off and it does not disengage. I think i need to move on to the next step.

Can someone provide me a photo or diagram of the 4x4 solenoid that is in the truck on the passenger side of the stearing cloumn? I need to troubleshoot that now but dont know what kind of device/connector I'm looking for. Otherwise, can you direct me to someone who knows?

Looks like this Awesome Advice on these posts has saved me $1700 !

Thanks Everyone!

11-25-2007, 06:05 PM	#3 (permalink)
EZs4runr Registered User Join Date: Nov 2007 Posts: 8	Now What? Pulled the plug on the actuator and used 12volt source to check and see if I had a bad actuator. With following info posted by "Pilottech" here... it works Perfect! ****************** "With the plug to the actuator in your hand and the lock of the plug in the up position the pins are #'d backwards 321 on the top row and 654 on the bottom. With + on pin 3 and - on pin 2 the DC motor will drive the actuator into 4WD and then +2 and -3 it will go back to 2HI. This will tell you if the actuator motor works or not. If the motor works then you can look other places." ****************** I have tested the front actuator, rear actuator, and both of these are good. On xfer case actuator I apply + power to pin 2 and - to pin 3 and that baby disengaged 4x4 perfect. Did the reverse and went back in. Back and forth and it worked great. Disengaged it, then plugged everything back in and 4x4 on dash stopped blinking. Did a quick test, Car turned on, and push the button for AWD and it went on, then I turned it off and it does not disengage. I think i need to move on to the next step. Can someone provide me a photo or diagram of the 4x4 solenoid that is in the truck on the passenger side of the stearing cloumn? I need to troubleshoot that now but dont know what kind of device/connector I'm looking for. Otherwise, can you direct me to someone who knows? Looks like this Awesome Advice on these posts has saved me $1700 ! Thanks Everyone! Last edited by EZs4runr; 11-25-2007 at 06:07 PM.