I'm now in 4th gear with power to spare!
Join Date: Oct 2013
Location: South Staffordshire
Re: Transfer Control Device and how to test/fix
I've tested the 4 relays and they work. I checked they engage when a power supply is connected (alarm battery) and that there is continuity to the other side of the relay once engaged. I also checked on the other two relays which have 5 blades, that one circuit is connected and then switches over to the other circuit once power is applied. All fine.
I've been under the truck and taken each transfer switch off in turn and tested them for continuity. They work in that they either don't have a connection to start with and then do when pressed or visa versa. None of them had any spots where the connection would drop/fail, so they appear to be working too. No rusty bits or obvious signs of water ingress.
I haven't had chance to do the unit itself, but will try that next.
The 4WD warning light is intermittent, but once its on it stays on until the ignition is turned off and on again. One thing I have noticed, but it maybe that I just can't hear it, is that 4HI and 4LO engage when the warning light is not on. I can hear them lock in and out when the dial is turned in the cab. However, when the 4WD warning light is on, it doesn't appear to engage as I can't hear it. Does this point to anything or is that just how the warning/fault system works to prevent any damage?
How do I test the actual cables for breaks? I did a visual around the connectors and saw nothing obvious.
Any other ideas?
Thanks in advance
2010 Navara D40 Tekna Connect