4LO indicator blinking

2016 TOYOTA LANDCRUISER

13,461 MILES • 3.5L • 6 CYL • 4WD • AUTOMATIC

UKAY

MEMBER
1 POST
FOLLOW

There is a 4LO blinking and check light on, on my dash board. when scanned, code P163b: 4WD ECU Malfunction and P17d0: center Differential Lock Control SW Circuit was displaced. what will be the solutions to these please?

Jun 3, 2019 at 2:50 AM

STRAILER

CERTIFIED EXPERT
53,854 POSTS

Hello,

I would check the system fuses and the 4wd ECU for corrosion at the wiring connector and if okay, let replace the transfer case ECU. Here is a guide to help check the fuses and diagrams below to show you where the unit is:

https://www.2carpros.com/articles/how-to-check-a-car-fuse

Check out the diagrams (below). Please let us know what you find. We are interested to see what it is.

Images (Click to enlarge)

Jun 4, 2019 at 2:04 PM