I have a 2000 Isuzu Rodeo that the rear wiper will turn on itself for about 2 minutes either when you initially turn it on or when you turn it off.

I don't know if there is one. Usually motor is the problem . You need to test the leado for power and ground at motor with ign on and rear wiper on before you go after a module.

Pull the interior panels and trace the wire loom. Focus on the area where it bends with the hinges. Many vehicles are prone to wire breakage here. If you don't see obvious, broken wires, probe them with a voltmeter as they can sometimes break inside without breaking the insulation.
Once you've found any breaks, reconnect with crimp connectors and wrap with electrical tape to secure everything.
good luck.

one more silly easter egg hunt, seems that is all we get.
now....sad..
and guess what most cars have no such thing.
ill pretend you did say that, and said
"my rear wipers are totally dead. why." HARK A REAL QUESTION.?
ANSWER:
A fuse blown.
marked rear/wiper washer 10 amps.
blown.
there is no relay have schematic here.

poof i the pudding.... below.

Hello! I suspect a defective rear wiper switch...However they are very expensive...This is an unusual fault due to the off in 5 minutes factor...Is that a consistent time period or does it change? I would first remove the wiper switch...Pull the connectors...And spray with a product called DeOxit from Radio Shack...If that doesn't help... Located behind the glove box, up high, is the alarm relay control module...Take it out and visually inspect the circuit board with a bright light view the solder side for cold joints or damage...See photo of Wiper switch below...They run about $200 for a new one...I'd look for a used one...Guru..saailer






I’m happy to help further over the phone at https://www.6ya.com/expert/david_6df67de3b14de867

Try replacing the fuse or the wiper switch.

buy some trico exact fit blades they come with instructions

try disconnecting negative battery cable for 5 minutes or so.this allows computer to re-set.you'll have to re-set clock and radio presets.

Sounds like the motor has shorted and is receiving an intermittent signal. I would try a pick n pull salvage yard and replace the motor; it should not cost much at all.

i take it you are talking about for the winshield washer fluid. pop the hatch and it should be located there on the side

Based on another similar problem and it was fixed driving backwards, that's exactly what I did. I drove the Rodeo backwards and then would stop and put it in gear and did this for 10 minutes until I worked the 4x4 gear loose and now all four wheels run. I must say, I created quite a sight driving backwards in a Wal-Green's parking lot for 10 minutes.