Reading ECU codes - Toyota Nation Forum : Toyota Car and Truck Forums

macst19 · 03-26-2009, 08:20 AM

I finally was able to jump my ECU. Before I used one paperclip and got no flashes. This time I used two and got flashing that never had any pauses. The flashing was just really fast so I knew that wasn't throwing a code but at the same time the code for "ok" isn't that either. Anything I did wrong? Anything I can do?

toyotaspeed90 · 03-26-2009, 09:42 AM

Jumper E1 and T1.... take a few inches of wire, strip each end and stuff the ends into those connectors...

a paperclip usually works, but chance there may be a coating making it difficult to make a good contact.

if the light is just constantly flashing you have no codes.

if the light (for instance... not a real code here..) flashes 2 times, pauses, 4 times, pauses longer 3 times pauses 1 time, pauses longer then repeats then you have codes 24 and 31...... (again, ficticious)

eage8 · 03-26-2009, 12:42 PM

yeah, if the light just keeps flashing with even pauses then you have no codes.

***REN69*** · 03-26-2009, 10:51 PM

Funny I just did this today

the Haynes manual states that if there are no codes, the CEL light will flash once every "few" seconds, well it flashes once every few milliseconds.

I got no codes so far but I'm still running rich! wtf!

macst19 · 03-27-2009, 03:14 PM

Quote:

Originally Posted by REN69

I got no codes so far but I'm still running rich! wtf!

Just what I was thinking Ren! I've tried everything I can think of. My car is still running rich but not to the point where it smokes black. It just bogs down a little when on the gas especially around 25-45mph. It has new cap, rotor, plugs, wires, and filters. New brake pads, cat is good or at least it doesn't smell like eggs. This baffles me.

***REN69*** · 03-28-2009, 04:12 PM

Oh mine smokes man... it stinks a little less now but still failed etest miserably. New plugs, new wires, new thermostat which fixed my high idle. Ordered a new O2 sensor, we'll see if that does something.

Mine smokes when it reaches like 3500rpm or higher, or if I stomp on it.

ae924d · 03-30-2009, 06:03 PM

funny...i have a good o2 sensor sitting in my garage lol

***REN69*** · 03-30-2009, 08:06 PM

Well, it finally gave me a code, code 21 for oxygen sensor... we'll see.