Brake, ABS, (!) lights on

Welcome!

Because of the importance of the brakes, Toyota provided a way you can read the brake system trouble codes without needing a reader of any kind. All you need is a short piece of skinny wire to put between the Tc and CG terminals of the diagnostic connector below the steering wheel, and then you put the car ON and count the blinks of the brake-warning dash lights. They blink out two-digit codes. (Several different lights can blink out these codes; you should copy them all down.) More details, pictures of the connector showing which pins, etc., can be found elsewhere in this forum if you search, and of course in the repair manual.

There are in the ballpark of a hundred possibilities, too many to guess at, but only a select handful of the codes will also set off the alarm buzzer you heard, so that narrows things down a bit. Still, it's more useful to read the codes than to try guessing. I recently suggested to another poster that very cold weather could have been involved, but how cold is it in Long Beach?

The tire pressure system could have a few possible problems, some as simple as used-up batteries in the senders inside the tires. Unfortunately, the tire system doesn't have a quick way to blink out codes like the brake system does. If you have a laptop with a J2534 dongle and the Techstream software, it can show you the pressure, temperature, and battery condition from each of the four senders, which you could use to pin down the trouble.

-Chap

 

you need a new 12 volt.

 

Ok, those are two-digit codes by the way, so:

((!)) 36 41
ABS 34 42
(!) 21 22 65 77

Anybody got a Gen 2 Repair Manual open to look those up?

(If you don't get a response soon, or like to get stuff firsthand, the manual's at techinfo.toyota.com, $15 gets you in for two days.)

Can you offer any more description of which lights you're calling ((!)) and (!) here? They might be called something else in the book.

-Chap

 

Until the ((!)) and (!) symbols are clarified I can give you the ABS codes:

34 (C0215) - Rear Speed Sensor LH Circuit - There are 12 INF associated with this DTC. Affected areas:

• Left rear speed sensor - Speed sensor circuit
• Sensor rotor
• Sensor installation

The associated workup for this code is 5 pages.

There does not seem to be a 42 code for ABS.

Pressed for time right now, but that's all I got, hope it helps.

PS just looking at one code in isolation is really not the best idea. In examining all the codes, quite often the manual will point you at the most important one, then see what happens the that is fixed.

 

I think your #3 is the "brake system yellow warning light" (it's yellow, right?). #4's the ABS light, natch. What you've circled as #5 is the light for the tire pressure monitoring system, if my eyes don't deceive me. Might be interesting to look those codes up later, after dealing with the brake/ABS ones.

-Chap

 

No you don't necessarily need a new 12 V. You definitely need to charge it up though.

I'm not 100% on the ((!)) codes.

I was able to find all the TPMS codes:



The first 3 codes tell me that 2 of your TPMS sensors in the tires no longer function (probably flat batteries, which are not replaceable).

The last codes tells me your attempt to reset the TPMS failed initialisation. (It is failing to initialise due to no input received for ID1 and ID2 sensors, BTW.)

Overall these TPMS errors are easily fixed by replacing the two failed sensors and then reinitialise the system. I'd be inclined to change all sensors at this time as the other two will not be far from failing

I hope someone else can chip in with the brake light codes.

 

i would replace the 12v first, the re read the codes, before attempting any repairs.

 

I wouldn't replace the battery unless that was logical conclusion based on proper testing. All it may need is a charge up.

 

easier to just replace it, unless you know how old it is.

 

It would be easier to replace the car, does that mean it is good idea? It is not hard to test things. Replace only if broken. It is not rocket science.

 

it is for some people. replacing the car isn't necessarily a bad idea, a lot of new owners here. and someone else gets a shot at whack a mole with your old one.

 

There is no evidence this required.

 

not yet.