20 Most Recent 2002 Toyota Highlander Questions & Answers


There is a relay in the fuse box under the hood near the battery, it's marked MG/CL it controls the compressor clutch.

2002 Toyota... | Answered on Jan 04, 2019


Open the remotes up...Are the boards the same...?

2002 Toyota... | Answered on Aug 27, 2018


It is a camshat timing need to gat it right

2002 Toyota... | Answered on Mar 15, 2018


jtaddiken: A/C systems rely on air flow over the condensers and is the component that looks like a radiator. This component is also located in front of the radiator while the fan is behind the radiator. Consequently if it does not function, especially on hot days the pressures in the condenser will build. The condenser is where the freon is condensed from a gas to a liquid. The byproduct is HEAT!
SO, You could have a number of problems occurring. 1. Fuses: in the main fusible link box are located on the left side of the engine compartment. It's a large black box about a foot long and 4 inches wide.When you remove the cover, you will see some fuses with clear plastic tops on them. They will have numbers on them.
The top fuse will have 140 the next two spaces down should be empty. Then there should be a 30, 30, 30, 50, 40, 40, 30.
You want to check the 30 which is the first one in the line as you go down from the 140. Look through the clear plastic top and compare it to the other ones. if the center of it is burned or missing, it is no good.
Pull it out and get a replacement with the same number.
IF it blows again, you have an electrical short which you can either chase down or bring to a professional.
2. Relays: There should be another box or an arrangement with 4 relays. Three will run side by side and one will be at the other end of the box. Based on the schematic I am looking at, they all work in conjunction with each other. The only variable is the condenser fan. But the radiator fan is designed to run whether the A/C is turned on or not. A failure of any one of these will render the condenser fan inoperative.
3. The fan motor has failed. You can do a simple test which you might do before you do check #2. That is, unplug the fan motor and supply it with an external power supply. Both the positive and negative. The negative is supplied through the relay and the other side to the fan is hot all the time.If the motor runs then continue with the other tests, if it doesn't , the motor is bad.
4. The pressure switch. If the pressure switch has failed, it will create an open circuit to the relay that also kills the compressor clutch so the A/C stops cooling. It can be located on the receiver drier or on the high pressure line close to the drier.
One which malfunctions can also keep the Condenser fan from running.
5. An A/C condenser with a lot of debris built up on it. There is significantly more air being forced through the condenser coils than the fan can pull through the radiator, air leaks between the radiator and condenser, thus minimizing the suction through the condenser.
I hope I haven't created a confusing situation rather than a plausible solution. I try to not only solve the problems, but give a basic understanding of how it works and then why it may not work.
Sometimes people will grade me on my assistance. Most of the assistance I have given, has not yielded a "well he helped" OR BOY, this guy should be giving advise in loading rocks!"
Any way, if I have helped and you need further assistance, I would be delighted to assist. Good Luck.

2002 Toyota... | Answered on Mar 10, 2018


I agree with Theo. Personal expirence with same issue after countless attempts to re enact symptoms and being stuck at the wrongest time possible...the issue was not just I S C valve but also in throttle body passages which isc is mounted at . Excessive carbon build up will not allow pintle of valve to seat properly and pending on temperature to much air and not enough fuel equals bad running condition. The valve extracts out and inward as demanded by ECM. So it's like flipping a coin sometimes it seats properly other times it don't. .. hence your interment problems. Replacing isc alone won't completly take care of problem without body passages cleaned cause your only fixing half of your problem. Here's a discription of your system
11_23_2017_5_32_23_am.jpg

I’m happy to assist further over the phone at https://www.6ya.com/expert/james_9ddabbbc483e2add

2002 Toyota... | Answered on Nov 23, 2017


I have a suggestion. Pull the fuel pump relay out, then wire a 10 amp DC ammeter in series with the fuel pump, using the connections that used to be through the fuel pump. Start the engine, and watch the fuel pump current. Does the current level fall off, indicating the fuel pump is losing pressure, and therefore failing.

2002 Toyota... | Answered on May 16, 2017


Hi,normaly if the stem cills are worn it would smoke on start up,as when the engine is switched off oil will pass the cill and couse a puff of smoke untill the oil burns off,it could be that the head gasket has a falt where oil leaks strate into one of the cylinders,or maybe the where the car had not been started for awhile the piston rings might have frosen a bit,you could try a engine flush and see if that helps,in the past I have used a aditive called slick-50 which gave good resalts,remeber as I have not seen the car this is all food for thought,hope this was some help,hope you sort it.

2002 Toyota... | Answered on Apr 23, 2017


run the fault codes and check for a reverse servo/solenoid problem

2002 Toyota... | Answered on Apr 04, 2017


yes. switch to synthethic. you will feel a huge difference in performance, epecially at take off. you will also get longer life out of the engine. you can never go wrong with synthetic

2002 Toyota... | Answered on Mar 30, 2017


The fuse for the ABS in a 2002 Highlander is in the black plastic covered box under the hood. If you take the fuse out, the ABS warning light and the emergency brake warning light will illuminate on your dashboard. The brakes will work as if you never had ABS, and the car will chime when you first start off if the emergency brakes are on.

2002 Toyota... | Answered on Mar 14, 2017


Mine went twice in 600,000 km with the characteristic last gasp sound. Check that your fuse for the horn is ok (in plastic covered fuse block under the hood). If it's blown, replacing it may not work as failed horns can act as a short. Then, I would suggest that you go to a dealer parts department to ask about their OEM horns for your Highlander and to get them to print out the horn placement diagram for the vehicle. You'll see that you have 2 (or even 3) horns. I seem to recall that Toyota wanted over $100 for their OEM horns each. In any case, it was too much. I went to an auto parts store (Napa?) and picked up an inexpensive dual tone universal horn. Under the hood, the collision sensors are close by so best to disconnect the battery to be safe. Now, I replaced the horn on the drivers side -- it's tight to get in there, but you can do it. Connect up the single horn wire (the horn's negative is connected through the mounting hardware). I also disconnected and insulated the wire to the horn in front of the rad (old failed horns can can act as a short). Assuming that your fuse is good, reconnect the battery (and set up your clock and radio stations) and, hopefully, you'll be good to go.

2002 Toyota... | Answered on Mar 14, 2017


Reconnect all the OEM wiring as it was from the factory is the only solution. This truck comes with a factory security system, why was another installed?

2002 Toyota... | Answered on Nov 17, 2016

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