CODE 46 NYTRO

This is the information from the servce manual:


Fault code No. 46 Symptom Power supply to the ECU is not normal.
Diagnostic code No. – –
Order Item/components and probable cause Check or maintenance job Reinstatementmethod
1 Connections
Wire harness ECU coupler

Check the coupler for any pins that may havepulled out.
Check the locking condition of the coupler.
If there is a malfunction, repair it and connect thecoupler securely.
Starting theengine andoperating it at idle.

2 Faulty battery. Replace or charge the battery.
Refer to “BATTERY INSPECTION” in CHAPTER 2.

3 Malfunction in rectifier/regulator. Replace if defective.
Refer to “CHARGING SYSTEM” in CHAPTER 8.

4 Open or short circuit in wire harness. Repair or replace if there is an open or short circuit.

Between the battery and main fuse.
Red – Red
Between the main fuse and ignition fuse.
Red – Red
Between the ignition fuse and main switch coupler.
Red/Yellow – Red/Yellow
Between the main switch coupler and engine stop
switch coupler.
Brown – Brown
Between the engine stop switch coupler and ECU
coupler.
Red/White – Red/White

Was there water in the electrical connections? I have read where some sledders put electroless grease in all electrical connections to keep out the water. You stated that you were riding in deep snow, I wonder if excess snow entered the engine area and saturated the connections and caused electrical failure.

my 2 cents. rbb

Was talking to my dealer last month and he was saying he has seen the same thing. he said the realys fail