Unable to diagnose either ECU Malfunctioning or a Sensor 5A-FE A/T

Tags: #<Tag:0x0000000a04c770>

hzk17 (hzk17) 2018-06-22 22:25:08 +0500 #1

Asalam o Alaikum Respected Members, I have a 1996 Toyota Corolla 5A-FE with Automatic transmission. I will be attaching two videos with this post, to make the problem which I am facing more clear.

Electrician whom I know took out the ECU/ECM, for diagnosis and reports that the ECU can be replaced/repaired, the ECU is faulty as per his diagnosis. I am not satisfied, so I told him to reconnect the ECU and I have done the diagnosis on my own, the error codes which I am getting are 13 and 43 respectively.

Code 13 after searching is Rpm signal to ecu missing above 1000 rpm
Code 43 No starter signal to the ecu

Now I want your guidance the seniors especially that, what is the problem is it due to malfunctioning ECU or the codes which I have mentioned are doing this.

Please guide me appropirately, what action to take in order to resolve this issue. Thanks

@capsat @Xulfiqar @SER_GTR

Respected experts please share your opinion after watching these videos.

sohelahmed (emi) 2018-06-22 22:59:17 +0500 #2

ARE all sensors working properly

Hassan1991 (Electrical Engineer ) 2018-06-22 23:01:43 +0500 #3

There's STA pinout in the ecu connect it to the starter.
Which gen 5afe it is?
Didn't 13 is knock sensor error?

hzk17 (hzk17) 2018-06-22 23:49:56 +0500 #4

How can i determine the generation of the engine, please guide

Hassan1991 (Electrical Engineer ) 2018-06-23 00:33:05 +0500 #5

If it's original it got 2nd gen.
Ecu got 2 wiring sockets or 3?

hzk17 (hzk17) 2018-06-23 01:02:42 +0500 #6

I will tell you tomorrow INSHALLAH, will take out the ECU.

Hassan1991 (Electrical Engineer ) 2018-06-23 01:10:33 +0500 #7

Insha ALLAH
Will be waiting.

capsat (ومن شر حاسد إذا حسد) 2018-06-23 11:17:51 +0500 #8

the right person who recently did 5AFE @SER_GTR

hzk17 (hzk17) 2018-06-23 17:37:30 +0500 #9

I have attached pics of ecu and engine. Also i have opened up the ecu and it seems that the electrician was right as the ecu has 3-4 capacitors in bad shape. One is disconnected

Hassan1991 (Electrical Engineer ) 2018-06-23 18:12:00 +0500 #10

It's got 3 sockets ecu. I got 2 socket.
Yes 2nd gen. Soure a new one it's not expensive. Should be in 1k.
I converted 5af carby to efi, i got cutted wiring and ecu for 3k (done wiring myself).
It's pinout will be same as 4afe. And you got knock sensor under the intake manifold.

hzk17 (hzk17) 2018-06-23 18:33:03 +0500 #11

Thanks brother most thankful. The error codes popping up was most definitely faulty ecu right.

Hassan1991 (Electrical Engineer ) 2018-06-23 18:48:14 +0500 #12

Yes if components are bad then it's surely due to ecu.
Remember get auto ecu. Shopkeepers will say it's same this that don't believe them.

hzk17 (hzk17) 2018-06-23 19:02:59 +0500 #13

Yes brother I gave it to a senior electrician he knows this and I told him twice to get an auto one.

Hassan1991 (Electrical Engineer ) 2018-06-23 19:09:59 +0500 #14

Best of luck.