Wires Inside the Yaris & What They Do

[mamun22s]

Originally Posted by CTScott

Tach wire location at pin 9 of DLC3 connector:

09 (Beige wire):


07-08 (Green Wire):

Can any one help the abt the chip on the pic coloured red and blue. what is there function?Be cause one of them getting hot. What actually they do? and also the function of the fuse? How do i know whether they functioning or not.

[CTScott]

Originally Posted by mamun22s

Can any one help the abt the chip on the pic coloured red and blue. what is there function?Be cause one of them getting hot. What actually they do? and also the function of the fuse? How do i know whether they functioning or not.

They are relays. The left one is the IG1 relay and the right one is the HTR relay. The left one gets warm when the ignition is on and the right gets warm when the blower is running. That is normal.

The fuse above it to the left is for the power windows and the one above it to the right is for the defogger.