Center differential light on

[goranvolvo]

1991 Land Cruiser

My center differential lock light stays on all the time.

At first, it would flash occasionally, then it started staying on for longer periods. Now it won't turn off at all.

I've already replaced both the front and rear sensors on the transfer case.

I also unplugged the sensors and the transmission/control relay, but the center diff light still remains on.

Has anyone run into this before or have any ideas on what else I should check?

 

[jonheld]

1991 Land Cruiser

My center differential lock light stays on all the time.

At first, it would flash occasionally, then it started staying on for longer periods. Now it won't turn off at all.

I've already replaced both the front and rear sensors on the transfer case.

I also unplugged the sensors and the transmission/control relay, but the center diff light still remains on.

Has anyone run into this before or have any ideas on what else I should check?

Your transfer case has 3 switches:
Low range
Neutral
Center diff lock

The CDL dash lamp is illuminated by grounding through the center diff lock switch.
If you remove the center diff lock switch connector and the light stays on, you have a short to ground somewhere in the circuit.