My car is 2002 TL with Navigation system (102K Miles and 4k miles under the new tranny) and it has now some problems. I already went to a shop for all minor problems, so the car worked ok till the new issue poped up. The problem is Climate control system. Last Friday I came back from work turning on A/C (auto mode) with no problem. Arriving at home, I turned off the car and stayed at home for a while. After about 30 minutes I came out for a grocery shopping, started the car, and turned on the A/C with auto mode. Then, the climate control problem poped up. When pushing the auto button, the indication light was on, and it seemed no problem on the unit. Even I can changed the temperature (without any response). But there's no cold or hot air. No blowing air. No sounds for system working. I checked and tested the relays and fuses but couldn't find any bad parts. So, I researched some discussions and notified that the control unit or computer chip could be the cause. Though, I'm not sure.
Are there any other things to check or test before replacing the parts? Is there anyone experienced the same problem that I'm experiencing now? Could anyone advise me?

Any comment would help me :-).

Thank you in advance...

HCTL2002

 

check under the passengers side dash for the fan motor. Look to see if the plug in is connected or melted.

 

I checked out the wires. The wires looked not-flexiable anymore, but the voltage measurement was ok (~12 VDC) through the wires.

 

HI FSTTYMS1,

YES, YOU'RE RIGHT . I JUST CHECKED THE WIRES AND FOUND THE PLUG-IN CONNECTOR WAS MELTED. SORRY ABOUT THE CONFUSION.

 

FINALLY I FIXED THE PROBLEM WITH ONLY PAYING FEW DOLLARS FOR THE PART.
I TESTED THE MOTOR AND FIGURED IT OUT THAT THE MOTOR'S OK, SO I REPLACED THE MELTED CONNECTOR WITH THE REPLACEMENT. THEN, THE PROBLEM'S GONE. NOW THE CLIMATE CONTROL WORKS WELL AS BEFORE.

BIG THANKS TO FSTTYMS1

 

Make sure the new connection is clean and tight, it might be a good idea to coat it with something to keep it from oxidizing, like silicone spray or grease.
This is one of quite a few lately that have had this problem.
Does anyone know if the heat comes from a loose/corroded connection where it plugs in, or where the wire attaches to the plug?