caldina gt-t prob!!! Help

[Hbomb]

Recently my caldina had had the "VSC" light appear on the instrument panel when I'm driving normally...what does this indicate?

Also today on the motorway, the traction control light (car with skid marks behind) came on and my car felt locked and I was only able to do 50km/hr. What the heck???

I don't know what is going on with my car, is it the computer? Had it serviced on saturday but all they said is that it has a minor oil leak.

Please help if you can!!!!

[sergei]

Possibly speed sensor playing up.

[fivebob]

Possibly speed sensor playing up.

Care to take another stab in the dark???

IME speed sensor faults result in the ABS light coming on, not in the behaviour described here.

The only way to determine what is gong on is to check for ABS/VSC/TRC fault codes. This is probably best done by taking it to a Toyota workshop and getting them to run a scan tool on it. You can do it yourself but the proceedure is somewhat complicated if you aren't familiar with the diagnostics system.

[sergei]

Hold on, doesn't ABS has it's own sensors, and speed sensor is usually brings up O/D (auto) and engine light on?

[matt dunn]

Hold on, doesn't ABS has it's own sensors, and speed sensor is usually brings up O/D (auto) and engine light on?

VSC needs to know independant wheel speeds, not just car speed,
so uses the ABS sensors to do that.

[fivebob]

Hold on, doesn't ABS has it's own sensors, and speed sensor is usually brings up O/D (auto) and engine light on?

Yes it does, and the ABS computer is also the TRC & VSC computer and they're the systems that are malfunctioning.

The speed sensors from the transmission go to the ECU and cause a different type of fault.

The ABS/TRC/VSC computer uses the wheel speed sensors, a Yaw sensor, steering sensor, a Master cylinder pressure sensor, a deceleration sensor, and a the brake light switch. AFAIK the ECU pins TRC+/- and EFI+/- are outputs to the ECU and there is no input from the ECU apart from the NEO pin which is the RPM signal.

[Hbomb]

Took it to toyota today and they ran a diagnostic which said the steering rack sensor is playing up. Hopefully when they fix it, it will sort it out!