smj999smj wrote:On the models with the AUTO mode transfer cases, there is a transfer motor relay located in the engine compartment, on the left side of the vehicle, near the back; on North American models, it would be not far from the brake booster and is mounted using a bracket attached to the side of the engine compartment with a single, 10MM head bolt. The relay is P/N 25237-EA000 and made in Japan by Jideco and will have two, 2-pin, harness connectors plugged into it. On Armadas, they frequently fail and cause problems with the air suspension, however, on R51 Pathfinder LE's, the are used to provide power to the electric fluid transfer pump in the transfer case. When they fail, they can cause problems similar to yours, and will trigger transfer case line pressure codes. Sometimes, you can unplug the connectors from the relay, clean up the male pins with a small file or some sandpaper and tighten the female pins using a dental pick or similar tool and get it to work, if there is a poor contact situation, which sometimes occurs. If the relay is bad, then the only option is to replace it; it comes with the bracket and they run about $25. Whether this is your problem, it's difficult to say without knowing what trouble codes are stored. You could always clean up the pins/ tighten the terminals as I described and see what happens, as that doesn't cost anything but a few minutes labor.
Update:
Not fixed yet.
What was done:
1. Transfer case was replaced (second hand)
2. Transfer case ECU was changed (then reverted back to mine)
3. All cables from Transfer case to Transfer case ECU are checked
4. The position of all wheels is correct
5. No error in ECU
6. ABS is ok
7. EPS is ok
Other changes(made before the problem)
ECU was reprogrammed to disable DPF.
The mechanic told me that probably it is a software issue and no one can fix it in Bulgaria