94 q45 TCS & Slip Light

[blackeagle113089]

The TCS & slip light wont turn off, i dont kno why it turned on. it was fine and then i turned the car off and went in the store, then came back on and started the vehicle and both lights dont go off. i pushed the TCS button but it still doesnt do anything. any idea what the problem is? of all days to go out too, it was pouring hard rain today and i could feel the wheels unable to keep some of its traction. but is there like a reset or something for this? anyone have any ideas?

[Rex]

Welcome to NICO

zerothread?id=128237

Several more threads discussing, but that one's a good starting point.

Try searching for threads with TCS slip or ABS in the title ... specifically in the Infiniti Online Mechanic subforum.

[elwesso]

welcome to NICO...

Your TCS relays are likely at fault.

[blackeagle113089]

thanks for the response, but i ended up reading the manual and doin a diagnostic...i got a 13 from the module in the back and then 21 from the one under the steering wheel. so is it infact still the relay or something else? according to the manual its the actuator? which i have no idea wut it is or where

[blackeagle113089]

anyone have an idea?

[jamesmost]

thanks for the response, but i ended up reading the manual and doin a diagnostic...i got a 13 from the module in the back and then 21 from the one under the steering wheel. so is it infact still the relay or something else? according to the manual its the actuator? which i have no idea wut it is or where

did not know there was a computer inder steering.. i thin a #13 is right rear wheel sensor.

[Q45tech]

He means the Consult? Relays are so common from leaking battery that you you replace them first just as with starter relay.......then you work from there if necessary.

[elwesso]

allow me to clarify...

For the TCS system, there are 2 major control modules, the TCM (throttle control module) and the TCS control unit.. The TCM is located under the steering wheel, the TCS control unit is in the trunk by the keyless remote control unit.....

The code 13 from the TCS control unit is "throttle opening" meaning the 2nd TPS is not reading correctly.. could be bad, or it could just need the connector cleaned, the latter seems more likely...

code 21 from the TCMis for the thottle actuator circuit... that means the circuit is either shorted or open somewhere.

My personal opinion is to get the relays replaced (theyre not expensive, maybe like $15-20 each) and then have that out of the way, and if it still doesnt work you can continue diagnosis.

[blackeagle113089]

thank u, i'll try that!

[B52]

Hi, in my Q of 1994 TSC light is on, and SLIP.
I pulled the relays, which are under the battery and drove to the electrician.
He checked them on a machine and found that they are working.
Should I buy a new relay?
Please help. In my country nobody knows Q.

[rabsusa]

Hi, in my Q of 1994 TSC light is on, and SLIP.
I pulled the relays, which are under the battery and drove to the electrician.
He checked them on a machine and found that they are working.
Should I buy a new relay?
Please help. In my country nobody knows Q.

- my TCS & slip lights have been on for the last 4 months, the car "flies" down the road fine, idles at 625rpm it also chirps the tires at quick gettaways - when i checked on the price of those 2 relays they gave me some crazy price, so why bother....if your getting them at that price plz post where, tyvm

[B52]

I took relays for auto electrician to check whether they are in working order. He checked it and said that they are working.
My question is do I have to buy new relays?

Thank you for your help, Chris

[qship96]

I took relays for auto electrician to check whether they are in working order. He checked it and said that they are working.
My question is do I have to buy new relays?

Thank you for your help, Chris

Why would you need to purchase new relays if your electrician already told you they were in working order????

[B52]

'll look to your TSC, which is behind the speakers at the rear window and try to read errors. Sorry for my bad English.

[B52]

Hi, I found the time and checked the error codes in the computer TCS.

Error is 13 times under identical intervals lamp lights up.

[B52]

Should I replace the secondary throttle sensor?

Do you first check the error codes in TCM?

[B52]

I got into computers, which are under the steering wheel

http://www.fotosik.pl/pokaz_obrazek/2b7 ... e59ff.html

The computer, which is located under the steering wheel

http://www.fotosik.pl/pokaz_obrazek/23c ... 54e84.html

When you turn the key in the ignition, I did not see flashing lights

http://www.fotosik.pl/pokaz_obrazek/7eb ... 3e05d.html


Is this computer is to check? Is that a computer is TCM?



Thank you for your help.

[B52]

I got into computers, which are under the steering wheel

http://www.fotosik.pl/pokaz_obrazek/2b7 ... e59ff.html

The computer, which is located under the steering wheel

http://www.fotosik.pl/pokaz_obrazek/23c ... 54e84.html

When you turn the key in the ignition, I did not see flashing lights

http://www.fotosik.pl/pokaz_obrazek/7eb ... 3e05d.html


Is this computer is to check? Is that a computer is TCM?



Thank you for your help.

[aliciaford]

Replace the relays under the battery! I replaced them about two years ago, and then the infamous lights came on a few months ago again. This time, I replaced the secondary Throttle position sensor to the tune of over $300 and the lights were still on. After much frustration, I decided to spend the $40 on two new relays. After I got the battery out and the little cover plate, I noticed one of the relays was cracked on the top and water was getting in there. No wonder. I would switch them no matter what the electrician says...

[B52]

Replace the relays under the battery! I replaced them about two years ago, and then the infamous lights came on a few months ago again. This time, I replaced the secondary Throttle position sensor to the tune of over $300 and the lights were still on. After much frustration, I decided to spend the $40 on two new relays. After I got the battery out and the little cover plate, I noticed one of the relays was cracked on the top and water was getting in there. No wonder. I would switch them no matter what the electrician says...

I checked the relays in the auto electrician and work around an error on a computer in the trunk number 13, is also a secondary throttle sensor. Replace it and see what happens. Greetings from Polish

[B52]

Hi, do you think if any of these secondary throttle sensor will work well in the Infiniti Q45, 1994?

Do I have to buy the original part dealer Infiniti? Does anyone have it remade?

http://www.rockauto.com/catalog/moreinfo.php?pk=1002627

http://www.rockauto.com/catalog/moreinfo.php?pk=3571629

http://www.rockauto.com/catalog/moreinfo.php?pk=1192173

Help greatly appreciated.

[hk20000]

Last time I had this problem my relay was in a spasm.... with the engine running open up the hood you might hear a buzz from under the fuse box. Inside there is a relay ticking away frantically..... pull it out and stick it back in, restart the car and see if that fixes the problem.

Fingers crossed that's the only thing wrong, everything else tends to be expensive to fix.

[B52]

Last time I had this problem my relay was in a spasm.... with the engine running open up the hood you might hear a buzz from under the fuse box. Inside there is a relay ticking away frantically..... pull it out and stick it back in, restart the car and see if that fixes the problem.

Fingers crossed that's the only thing wrong, everything else tends to be expensive to fix.

You're talking about the relay under the battery ?

Is there another place ?

[ericthered]

I had the exact same problem, and after a couple years I got the patience to methodically work it through with the FSM, and a spare Q45 with TCS (yes, I had two of them!)

It was the secondary throttle positioning sensor on the plenum.

A very cheap part and easy replacement. I don't remember the final diagnostic I did to prove it, but it was straight forward.

[B52]

Hi guys, I have a secondary throttle sensor.
the problem is that when connecting it to the control TCS off and SLIP do not go out.
Is there a correct connection of the secondary throttle sensor (I mean the black sensor), can I do something wrong. You may need this gray plastic circle that rotates to set in place.
Please, help.

[B52]

Hi guys, I have a secondary throttle sensor.
the problem is that when connecting it to the control TCS off and SLIP do not go out.
Is there a correct connection of the secondary throttle sensor (I mean the black sensor), can I do something wrong. You may need this gray plastic circle that rotates to set in place.
Please, help.