Saturn Repair Problems? Ask a Mechanic for Answers ASAP
Hello and welcome!My name isCustomerand I can assist you with your question.
YES, you can fix it yourself and I can help!
Lets start by diagnosing this problem. I take it the blower motor is not coming on? Is that the issue your having?
Would you like a wiring diagram of the blower motor circuit?
Would you like me to walk you through this diagnoses?
Hello? Where did you go?
Well, I am going to send you some information as I might be off line in a bit when you respond back.
If the blower motor is not working, we check for power and ground going to the blower motor on the two wires that go directly into it. If both power and ground are present but the blower motor is not working, the blower motor is bad and will need to be replaced.
If the blower motor happens to be missing power, then we check the fuses, switch and relay. The blower motor, relay, resistor and the switch are all easy to replace.
Here is a wiring diagram of this circuit.
Sorry for the delay!
You only need a test light or a voltmeter to check for power and ground going to the blower motor.
I do this full time and try to be around as much as possible to respond to my customer to provide them with the best service I can.
YES, even if I am not around, someone will be here to help you. Please give me a chance to respond if I happen to be off line.
The blower motor is not too hard to remove and replace. There may be a plastic cover under the dash that you will need to remove to gain access to the blower motor.. but thats about it. However, lets not get ahead of ourselves. Lets do the diagnostic steps first and then once we know it is the blower motor (or something else), I can send over the procedure to remove and replace it.
YES, sure can!
1. Turn the key ON or to the RUN position
2. Gain access to the wires going to the blower motor (I would disconnect the electrical connector going to the blower motor)
3. Check for battery voltage on the yellow wire
4. Check for ground on the black wire
To check for battery voltage, the black lead of your meter needs to be on battery ground. Or you can use the ground on the black wire of the connector provided it has a good ground.
NO problem. Once you remove the plastic cover under the passenger side dash, you should see the blower motor and the wires going to the blower motor.
Wait.. one minute..
I just double checked for you and it looks like I was wrong. The blower motor is accessed from the TOP or outside and it is hard to get to that I originally thought.
Most of them are located inside the vehicle under the dash on the passenger side.. but not yours. This set up is a bit different.
Here are two pictures that will help.
YES, both wire arms need to be removed including the entire cowl to access the blower set up.
However, it looks harder than it is.. once your in there, it wont be too bad.
Hello! It'sCustomerfrom just answer.
I am just checking in to see if you need any further assistance?
Let me know!
It should not read any voltage with the blower motor turned off.
It should read battery voltage with the switch in the HIGH position
Check the orange wire going to the blower relay for power.
Do yo8u have your VIN handy?
The HVAC Blower Relay is located in the Left Instrument Panel Fuse Block.
No problem. Just check power on the orange wire just like you were doing at the blower motor.
Thank you for that information.
YES< thats correct. Check for voltage on the female pins that the relay plugs into.
Do this with the key on and blower motor turned on high.
Two out of the four terminals should have battery voltage.
Are you sure your on the right relay?
This is with the key on and blower switch turned on high?
Ok, then we have two seperate problems. no power from the HVAC use and no power from the switch.
If you look at the diagram I sent, it shows where this relay gets power from. If the switch was replaced, maybe the switch does not have or is not getting power. The brown wire going into the switch should have power on it with the key in the RUN position.
I would diagnose it first before putting it all back together..
YES, I am available right now.
The problem needs to be diagnosed before I can answer your two questions.
So we need to finish diagnosing this problem.
Check for power on the yellow wire at the blower motor with it turned on high and the key on.
If there is no power, then..
Check for power going into the HVAC blower relay on the orange wire. (this wire should be hot at all times.. even with the key off)
So then we trace the orange wire back (using the diagram I have provided for you) to the 40 amp HVAC blower fuse located in the underhood fuse block. Check this fuse.. not only to see if this fuse is good, but be sure this fuse HAS BATTERY VOLTAGE on it.
Ok, and if this fuse is good, then the correct diagnoses would be to check for power leaving the underhood fuse block on the orange wire. If that checks out good, then yes, there is a break or open in the ORANGE wire between the underhood fuse block and blower relay.
If I understand you correctly, yes, you just need to touch the metal part of the female portion to get a voltage reading. The other end of the test light or voltmeter lead will of course need to be touching a good ground.
Which wire or circuits are you testing?
So there is no voltage on the orange wire going to the relay?
So does the orange wire going to the relay have power or not?
Well, I would be sure before we continue.. so that we dont make any diagnostic mistakes.
It should only go in one way
There should be two orange wires. One big one and one little one.
The big one is the one we were testing from the underhood fuse block. This one should have power at all times.
The little one comes from the switch and should have power with the key on and switch turned on high.
So there is a black wire going to the blower relay. Lets check for a good ground on this wire.
If this wire has a good ground, then the relay should activate and send power out to the blower motor on the yellow wire.
Did you do a continuity test to ground on that pin with the relay removed?
Ok, good.. does the relay click when inserted if the key is on and blower switch is turned on high?
So does it send power out the 4th wire (yellow wire) to the blower motor when inserted (with the key on and blower switch turned on high)?
I know you cant see the color wires behind the fuse panel, but if the yellow wire at the blower motor is NOT getting battery voltage when inserting the relay (key on and switch turned on high) then there is either a broken or open in the yellow wire to the blower motor or the fuse block is bad.
YES, but the relay would need to be plugged in and activated for that circuit to get power from the relay
That or unbolt, flip around the fuse block and check the wire coming directly out of the relay on the back side for power with the relay plugged in.
Was the relay replaced? If not, that might just be the problem..
Now that I think about it, even if this were the case, the yellow wire going to the blower motor should still get battery voltage from the resistor on all other settings. (low, M1, M2).. and your not even getting that from the switch.
It'sCustomerand I just wanted to check in to see how things are going and to see if you need any further assistance?
The blower resistor could be bad. However, with the switch on high, it bypasses the blower resistor. So if it still does not work on high, then there is something else preventing it from working.
The resistor should be down near the blower motor as well.
The yellow wire comes from the resistor and relay (they come together) and then go to the blower motor. No, there are no other connections or connectors on that circuit.
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