Problem with my car

[rakhan01]

well. it could be the case.

I went to near by toyota service center. They could not seem to find the solution. They connected the obd II reader but it showed everything ok. Engine and ecu ok , airbag and abs ok as well. Even if it's the led, the obd should detect the problem which is not the case. What do you suggest?
they also said the fuses and wires are ok.

[CTScott]

Originally Posted by rakhan01

well. it could be the case.

I went to near by toyota service center. They could not seem to find the solution. They connected the obd II reader but it showed everything ok. Engine and ecu ok , airbag and abs ok as well. Even if it's the led, the obd should detect the problem which is not the case. What do you suggest?
they also said the fuses and wires are ok.

The ECM for that vintage may not actually detect a bad LED/Bulb, so that's where I would check first. The EWD for your 2004 shows that the feed from the ECM to that indicator is on Pin 8 of the smaller connector. You can measure the voltage on that pin to ground to verify that the ECM is outputting to it.

It is definitely not a fuse issue, as many other indicators would be out.

2004 meter connectors.jpg

[rakhan01]

this is the thing i need to tell the electrician as i haven't done it before. Apart from it, do you think of anything else which could be the problem. Please list the feared problems so i could tell my electrician to check.

[CTScott]

Originally Posted by rakhan01

this is the thing i need to tell the electrician as i haven't done it before. Apart from it, do you think of anything else which could be the problem. Please list the feared problems so i could tell my electrician to check.

I am fairly certain that it's a bulb rather than LED and that the bulb is burned out. I just noticed in the circuit diagram of the inside of the meter, that all of the indicators, except for water temp have the symbol for a bulb, rather than LED. Just the water temp indicator is drawn as an LED.