'06 Tundra - 4wd won't engage

[Chuckster]

Make

Toyota

Model

Tundra

Year

2006

Miles

280,000

Engine

4.7

4wd light blinks on dash. I hear the actuator on the transfer case 'whirr' but I hear nothing from the front diff actuator.
Does anyone have a way to test if the actuator is getting a signal to engage, and/or a way to test if the actuator itself is good?
I took the actuator off - plenty of oil and it moves.
All suggestions are appreciated.

 

[grcauto]

Get the code.

 

[Chuckster]

Get what code? The light blinks cuz it's not engaged, not to say there's a code.

 

[grcauto]

There's a code in there. Need the right scan tool.

 

[nickb2]

 

[nickb2]

sorry

 

[Chuckster]

There's a code in there. Need the right scan tool.

I'll get on it tomorrow; thanks for insisting!

 

[Chuckster]

sorry

lol

 

[Chuckster]

I'll get on it tomorrow; thanks for insisting!

Tried twice; once with my little scan tool and then with NAPA's - no codes. called Toyota to see if they would take a quick read for a code - who was I kidding . . ."You'll have to make a service appointment . . ." I guess I need to get in somewhere with a serious scan tool

 

[grcauto]

You are not scanning the correct module. Those tools only scan PCM.
Did you test the actuator at all? Easy enough to see if the windings opened.

 

[Chuckster]

You are not scanning the correct module. Those tools only scan PCM.
Did you test the actuator at all? Easy enough to see if the windings opened.

Now I feel dumb. What other module and how do I scan it?

 

[billr]

It is probably the same module, but you need a scanner that will request and can receive/decode data regarding the transmission.

 

[Chuckster]

It is probably the same module, but you need a scanner that will request and can receive/decode data regarding the transmission.

Got it. I'll try a shop or two tomorrow. Thank you; will let you know what I find.