Did you read CruiserDans response to the earlier post?I’m gonna hijack this thread with an issue I’m having with my CDL. I have a 97, center diff lock button added by PO. And I can not get the cdl to do anything. The dash button used to work in either high or low so I know it used to work. Here’s what I’ve done to test it, used this thread for help and did all the tests.
- pulled cdl dash button from dash and tested continuity, it checked out.A step-by-step tutorial on troubleshooting the Center Diff Lock on a Toyota FJ80 Land Cruiser.www.pnwadventures.com
- pulled relay from kick panel, tested continuity with and without 9-volt power. It checked out.
- tested all 3 switches on the tcase, they all checked out.
- tested ohms on the actuator and it checked out.
- hooked the actuator motor up to 9-volt power and it DID engage AND turned the lights on the dash, confirmed it locked by driving around, unlocked the cdl by reversing 9-volt power to the actuator motor.
- don’t know what else to test.
Pressing the cdl dash switch triggers the relay in the kick panel, I can hear it every time. But it does not engage the actuator. I also checked the 10amp gauge fuse and 30amp diff fuse. So I’m stumped. Any ideas out there? Everything seems to be working but there’s a lose somewhere from the relay to actuator motor.
“when in low range the the shift points move up to a higher RPM. Very much like when you switch to the power mode. If the transmission shifts rapidly through the gears in low range the low 4 position circuit is not working.”
That means the low 4 position switch is sending a signal to the transmission ECU. This means the system is behaving as though pin 7 has been disconnected.