Question about 1991 Isuzu Pickup

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Blowing fuse on ECM under the hood Changed computor,still pop fus

Where is Electronic control module located on truck. This is the only thing I have not chenged. I have chenged the computor, and it ran for 3-days. Still poping fuse on ECM under hood!!! I need datails on where to find this control module. I have part ordered, but don't know where it located on truck. I going to try one more thing, unplug computor, then put fuse in, And then turn key on to see if it blows fuse again??? If it does, I have a bad spot in wiring, which mean driect ground.

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Try looking inside distributor

Posted on Mar 12, 2009

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P1296 code 1996 Concorde

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Fuel Pump Flow Control Module , under hood fuse/relay box.
do you know what a fuel pump control module is ?
The in-tank fuel pump is controlled with a fuel pump control module (FPCM). The engine control module (ECM) enables the FPCM and sends the desired fuel line pressure to the FPCM via GMLAN. The FPCM sends a pulse width modulated (PWM) voltage to the in-tank fuel pump allowing the fuel line pressure to be varied as commanded by the ECM. The high pressure fuel pump, fuel rail pressure, fuel injection timing, and injection duration are controlled by the ECM.

I would bet that the fuse isn't the problem ! Don't get me wrong , the fuse could be blown but fuse's don't blow for no reason . The fuel pump control module .

Video on youtube fuel pump control module diagnostic's .

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No go! The anti theft system is cleverer than that and can't be defeated. The antitheft module is part of the ECM and is just a part of the many things this tiny but powerful computer controls. The ECM is inside the fuse box under the hood normally on the driver side wheel arch.

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2004. Why is the blower motor not receiving power?

The blower motor relay in the auxiliary junction box under the hood is good ? All relays ? only one controls the blower motor ! The electronic automatic temperature control module turns it on by supplying a ground inside the module ! The 30 amp fuse for the blower motor is located in the under hood auxiliary junction box ! At the relay socket test for battery voltage at pins 30 an 86 ,power form 30amp fuse ! The other two pins 85 an 87 ,85 is circuit to the electronic temperature control module . You could test this part of the circuit too , with a test light or volt meter . But if no voltage to the blower motor ,could be the electronic temperature control module is bad ! VEHICLE RELAYS Operation Diagnosis

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1 Answer

What the electronic control module control on my 2005 cts

Did you check your fuses? You might have a blown ecm fuse or other fuses blown. Were their any additional wires connected to the battery that you may have ommitted? Do you have spark at the coil pack or the plugs? You may have a bad module. How does it sound when you crank it over? Does it turn over superfast? Could be timing. Check all these things and get back to me. Check the fuses and relays under the hood also.

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Help my mercedse says display faulty visit workshop. it wont start. i just had a full sevice performed and was told it can drive far distances. the lights, radio etc work just zero response from engine

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Where is the fus box located for tail lights?

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Location of relay carrier & electronic box

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It is located under the dash, or under the hood, it stands for Electronic Control Module.

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1 Answer

Blow,s fuse,cant read what it go,s to, 3d one down left side look,s like it starts with ecm--n ? it was running fine ,heard a dull pop and it quit.turn,s over won't start

The fuse is for the ECM Electronic Control Module,without it you will have no spark/fuel.
The fuse should have benn a red 10 amp fuse,replace it!

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