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Did you check the fuel pump relay ? The relay is turned on by the ECM - engine computer . Do you know how to test automotive electrical circuit's ? How to read a wiring diagram . Have a DVOM - digital volt ohm meter ? Free wiring diagrams here http://www.bbbind.com/free-tsb Enter vehicle info. year , make , model an engine size. Under system click on engine ,then under subsystem click on fuel pump . Click the searc button , then the blue link. Watch video's on youtube on fuel pump electrical testing . Fuel Pump Electrical Circuits Description and Operation
Doesn't have one . Looking at a wiring diagram to view fuel pump electrical circuit would show that . Do you know what automotive electrical wiring diagrams are ? Do you know how to use one along with a DMM - digital multi-meter to test electrical circuit's ? The fuel pump is controlled by the PCM - engine computer by energizing the fuel pump relay .
Free wiring diagrams here http://www.bbbind.com/free_tsb.html
Enter vehicle info. year , make , model ! Under system click on engine ,then under subsystem click on fuel controls . Click the search button then the blue link. Scroll down to the fifth diagram .Fuel pump electrical circuit . Fuel Pump Electrical Circuits Description and Operation
You mean the blower motor stops blowing air , the A/C compressor is still engaged ? The temp gauge shouldn't have anything to do with the blower motor .But stranger things have happened on these systems when they are controlled by a electronic module (BCM )
The instrument panel cluster (IPC) displays the engine coolant temperature as determined by the engine control module (ECM). The ECM sends the temperature data via high speed GMLAN serial data to the body control module (BCM). The BCM then sends the information via low speed GMLAN to the IPC in order to display the engine temperature.
The BCM applies voltage to the blower motor through the HVAC relay. The resistors and the blower motor are in a series circuit. The following list represents the number of resistors in series with the blower motor per particular speed request:
• Low speed--4 resistors
• Medium 1 speed--3 resistors
• Medium 2 speed--2 resistors
When the operator requests High speed, the HVAC control assembly applies ground directly to the blower motor through the high blower motor control circuit.
Do you know anything about automotive serial data communications ? GMLAN Is general motors version of C.A.N controller area network .
Do you know anything about diagnosing automotive electronics ? Using a digital volt ohm meter ? Using wiring diagrams to pin point locations in a electrical circuit for testing ? Do you know what a factory componet location diagram is ? It takes more then looking at fuse's an relays , to see if current is flowing in a electrical circuit .
http://www.bbbind.com/free_tsb.html Free wiring diagrams ! Enter vehicle info. Year , make , model and engine size ! Under system click on HVAC , under subsystem HVAC Controls . Then click the search button , then click the first blue link . This is the blower motor control diagram . Do you know how to read a wiring diagram ?
Did you check fuel pump electrical circuit ? Look at a wiring diagram to see what all is involved in making the fuel pump work. No , the knock sensor can't cause this ! Do you know how to do automotive electrical circuit testing using a DVOM - digital volt ohm meter ? How to read an use a wiring diagram to pin point areas for testing in a electrical circuit ! What do you think makes that fuel pump work ? AIR !!!! Looking at a wiring diagram I see a fuel pump relay that gets B+ voltage from the engine control relay. The engine computer energizes both, relays .There is a fuel pump resistor inline before the fuel pump.
Free wiring diagrams here http://www.bbbind.com/free_tsb.html Enter vehicle info. year , make , model and engine size. Under system click on engine then under subsystem click fuel controls ! Click the search button then the second blue link . The second diagram down shows the fuel pump electrical circuit .
Watch this videos from youtube . Basic Electricity for Service Techs Ohm law Current Flow Opens Shorts Electric Testing Techniques You Need to Know
I don't know why your question is bound to this special breaker.
If your question is common, the wye/delta is a way to reduce the starting current of a large three phase asinchronous motor. When a three phase motor is first connected in wye (star), the starting (peak) current is about 3 times less than this in delta. When already in motion the electromotive force will make the peak current when turned in delta much less, than that with a stopped motor.
Here's a link to the online manual.
As far as that diagram....didn't you label the wires?
Take a look here, it may help you. circuit wiring , especially the paragraph that begins: "Knowing that electrically common points have zero voltage drop between them is a valuable troubleshooting principle." Also read about resistors. That speed control knob is one.
Hope that helps...
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Free wiring diagrams here http://www.bbbind.com/free_tsb.html Enter vehicle info. year , make , model and engine size . Under system click on engine . under subsystem click fuel controls .then click the search button .Then on the top blue link .Second diagram down is fuel pump electrical circuit .
Do you know how to test a relay ? Relays all work the same , VEHICLE RELAYS Operation Diagnosis