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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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 .
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.
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
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.
Have you checked your fuses? Check your owners manual for location of your fuse boxes. Normally under rear seat and under hood in mercedes. Check the reference card in the fuse box for any fuses corresponding to the engine,I.E. engine, Fuel pump,etc. Check those fuses to see if any are blown. If the fuses are all good then it is probably the ecm (electronic control module).