Yaris 07, 2dr, lb - P/S problem - Toyota Yaris Forums

jlcoki · 07-23-2015, 03:22 PM

Hi everyone!

I own a Yaris 07, 2dr, lb and about 5 months ago started with some problems...

This is what happens:

Suddenly when you start the car (1) the P/S light shows in the panel along with the (2) drivers airbag light, (3) the seatbelt beep does not sound and (4) the steering wheel gets hard.

It's resolved by shutting the car off and starting the car again and everything works perfect.

This problem has never came when driving, just when I start the car. The battery is new and I replaced the EPS ECU too. ECU fuses seem to be ok.

I took it for scan and since the problem didn't happen while been there they couldn't get anything. Is like a ghost ha. It just showed old codes apparently from the can communication. May be that's the issue??

I can drive my car anywhere but I can't stand this thing anymore...

If you have any idea of what's generating this I'll appreciate your help!

Here's the video illustrating all this..

Regards...

https://www.dropbox.com/s/2mlqrdswgj...AS%20.MOV?dl=0

CTScott · 07-23-2015, 07:37 PM

The CAN bus error could be part of it. Do you leave any devices plugged into the diagnostic connector?

Also, are you running the original alternator or a replacement one?

jlcoki · 09-07-2015, 08:30 PM

Hi CT, the alternator is original! Today I found this thread.. It's the only one that sounds similar to whats been happening with my car, but with a different car.. I think the ECU and the PS motor assembly are from the same maker: DENSO

Chevi cobalt thread:
http://m.topix.com/forum/autos/chevr...B7V2DTH5JH/p52

I might buy a PS motor and get it installed and hope this solves the issue.. What you think?

07-23-2015, 03:22 PM	#1
jlcoki Drives: Yaris 2007, LB, 3 drs Join Date: Feb 2015 Location: Costa Rica Posts: 4	Yaris 07, 2dr, lb - P/S problem Hi everyone! I own a Yaris 07, 2dr, lb and about 5 months ago started with some problems... This is what happens: Suddenly when you start the car (1) the P/S light shows in the panel along with the (2) drivers airbag light, (3) the seatbelt beep does not sound and (4) the steering wheel gets hard. It's resolved by shutting the car off and starting the car again and everything works perfect. This problem has never came when driving, just when I start the car. The battery is new and I replaced the EPS ECU too. ECU fuses seem to be ok. I took it for scan and since the problem didn't happen while been there they couldn't get anything. Is like a ghost ha. It just showed old codes apparently from the can communication. May be that's the issue?? I can drive my car anywhere but I can't stand this thing anymore... If you have any idea of what's generating this I'll appreciate your help! Here's the video illustrating all this.. Regards... https://www.dropbox.com/s/2mlqrdswgj...AS%20.MOV?dl=0

07-23-2015, 07:37 PM	#2
CTScott ULTIMATE View User's Garage Drives: 09 5dr LB, 2x 08 3dr LB Join Date: Oct 2008 Location: USA, CT Posts: 13,460	The CAN bus error could be part of it. Do you leave any devices plugged into the diagnostic connector? Also, are you running the original alternator or a replacement one? __________________

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09-07-2015, 08:30 PM	#3
jlcoki Drives: Yaris 2007, LB, 3 drs Join Date: Feb 2015 Location: Costa Rica Posts: 4	Hi CT, the alternator is original! Today I found this thread.. It's the only one that sounds similar to whats been happening with my car, but with a different car.. I think the ECU and the PS motor assembly are from the same maker: DENSO Chevi cobalt thread: http://m.topix.com/forum/autos/chevr...B7V2DTH5JH/p52 I might buy a PS motor and get it installed and hope this solves the issue.. What you think?