02 Toyota Tacoma 4 high not working push button type

I have a 02 Toyota Tacoma 4 high not working when pressing button any one had this problem before? Another thing I noticed is when shifting shifter to neutral light comes on and sounds like everything engages..

 

This is a manual transmission also

 

Pictures?

There shouldn't be a button for 4WD on the 1st gen Tacoma, it should be a J shift transfer case.

 

Push button for for high

 

Welcome to TacomaWorld
If 4Lo is engaging and disengaging properly the front differential Add actuator is working, this points to the Tcase 4hi actuator being suspect. Check and clean electrical connectors.
If the Tcase actuator vent hose isn't connected moisture and dirt get in and corrode the contacts, servo motor and gears. If the hose is off remove the actuator for interior service or replacement, your choice. But first use a multimeter to check the 4Hi switch.
Good luck.

https://www.tacomaworld.com/threads/4x4-actuators-gen-1.456059/#post-13449159


The 4Hi button works best when used while moving, not sitting still.

 

Huh.

Never seen one of those in a Tacoma before, only in The 01'-02' Limited 4Runners.

Bizarre didn't even know that was an option gor the 1st gen Tacoma.

Did 4WD originally work on this truck or are you a new owner?

 

I have one on my '04 TRD OR.

 

Push button 4hi is more common in the 2001-2004 than J shift. Only J shift 01+ I've seen have been a few on this forum

 

Second owner been working.. I did the clutch on it and after rechecking everything I noticed the 4high is not working.. 4 low works and engaging.. how would I check the 4 high button with and multimeter?

 

We're a rarer group I must agree

 

Update on the problem I’m having.. found open circuit on 4wd 4high switch harness.. if any of you have this problem in the future check continuity between switch the 4wd module..