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Holding Off 20th AE GTI's
1994 Toyota Corolla
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209 Posts
Put a paperclip in TE1 and E1 in the diagnostic box. Turn on your car to the ON position (but not on, just dash lights on) Count the number of flashes before it pauses. Count the number of flashes after the pause. EX. 2 flashes-pause-5 flashes, repeat, you have code 25. I think there is a decoder somewhere, or you can just look at a hayne's manual.
 

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Holding Off 20th AE GTI's
1994 Toyota Corolla
Joined
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209 Posts
Where's this diagnostic box you speak of? lol. I'm not gonna be near the car for like another week again. Like I said, complete noob here. Is it underneath the driver side kick panel? or Underneath the hood? Plus I don't have a hayne's manual, if I pull the code would anyone here be able to look it up for me? TIA.
I think it's in between the air filter and the firewall. You can't miss it, it's about the size of a deodorant cap and it says diagnosis on it.

I found a more detailed version on how to do it:

Here is the procedure
  1. Make sure the battery is fully charged and voltage is at least 11 volts.
  2. Make sure the throttle valve is fully closed. DO NOT PRESS THE GAS PADLE.
  3. Place the gear shift lever in Neutral. Turn all accessories off.
  4. The engine should be at normal operating temperature. Start and Warm-up the car for a while. And once warmed-up turn it off.
  5. Using a jumper wire, connect terminals TE1 and E1 of the Data Link Connector 1 (DLC1) located under the hood in engine copartment possibly near Intake Air filter and Brake Master Cylinder marked "DIAGNOSIS".
  6. Turn the ignition switch ON, but do not start the engine. Read the diagnostic code by the counting the number of flashes of the malfunction indicator lamp.
  7. Codes will flash in numerical order.
  8. If trouble code exists, Check Engine light will flash once every second. The number of flashes will equal first digit of trouble code. After a pause of 1.5 seconds, second digit will be displayed.
  9. If more than one trouble code exists, next trouble code will be displayed after pause of 2.5 seconds. Smallest value trouble code will be first. Once the list is completeted Trouble codes will be repeated after a long pause.
  10. If no faults are stored, the lamp flashes continuously every 0.5 second. This is sometimes called the Normal or Diagnosis System Ready/Clear signal.
  11. After the diagnosis check, turn the ignition OFF and remove the jumper wire.
  12. Find out and note-down diagnostic code(s).
For now, I can't find the codes, but your local autozone will have Hayne's manuals and you can look what you have. Good Luck!

P.S. 92 Prelude? SI? 4WS? 5 -speed? That car sounds really fun, I was about to get a 3rd gen Lude before I got the Corolla.
 

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Holding Off 20th AE GTI's
1994 Toyota Corolla
Joined
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209 Posts
Ok, I checked it in the snow, and it is a code 25. Does anyone know what that is?
I'm pretty sure I had the same thing. It's a lean A/F ratio. It's a multitude of symptoms, Code 25 encompasses a lot of things. Check if you have an exhaust leak or if all your air and exhaust sensors are plugged in. My exhaust disconnected right after the 1st muffler and I got Code 25, so I welded it, disconnected the battery, and haven't gotten the code since. (If you don't count the time my header airflow sensor (?) got disconnected.)
 

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Cressida nut
91 Pickup (Hilux)2wd
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4,586 Posts
anyone know code 47 or do I have to stop by rice haven aka autozone?
 

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Registered
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14 Posts
I'm trying to diagnose the CEL in my '91 V6 Camry LE, but I can't find the TE1 port in the "Diagnosis" box. Are the numbers different for the V6 Camry?
 
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