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Gregory Fox Posted on Jun 14, 2015
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Does an ignition control module have anything to do with fuel pump functioning?

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J.D. Browning

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  • Ford Master 2,760 Answers
  • Posted on Jun 15, 2015
J.D. Browning
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1987 rangers use a device called a TFI module to control ign. timing , this merely triggers a std. coil to fire the center port of distributor cap , this device only controls the coil to fire but does send a pulse for timing back to ecu this sets the base pulse for fuel injection , but its also affected by manifold Air flow and exhaust O2 amounts (closed loop) , but engine should run in base mode (open loop) fuel timing (but not well) , fuel pump relay is enabled to run via ECU output , Now your year ranger had a tech bulletin out on fuel pumps , seems they had a problem getting them to work after a fuel filter was replaced , something about a false backpressure , no if you have no/low fuel pressure then id look at fuel pump power 1st then fuel pump itself assuming you've already tried a new filter of course

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  • Contributor 8 Answers
  • Posted on Jun 15, 2015
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The ignition control module controls ignition coils with 1 coil to every 2 spark plugs, noticeable by unstable rpm.

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Stephen

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  • Ford Master 21,873 Answers
  • Posted on Jun 14, 2015
 Stephen
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Not the fuel pump, but it could affect the injectors.

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Related Questions:

0helpful
1answer

2000 subaru outback has new fuel pump and relay but keeps blowing fuel pump fuse after a few minutes . is there anything else on that circuit

That circuit usually includes these possible components:
A/C Control Module
Body integrated unit
Light control sensor
Transmission Control Module
Engine Control Module
Fuel pump relay
Ignition coil No. 1 (turbo model)
Ignition coil No. 2 (turbo model)
Ignition coil No. 3 (turbo model)
Ignition coil No. 4 (turbo model)

If it takes a minute to blow the fuse then definitely one of components in list is causing too much amperage. try a slightly larger fuse.
0helpful
1answer

Ford Focus 1.4 petrol 2001. No fuel being pumped through. Had fuel pump changed about year ago. Is there anything I should try before going to garage

Do you hear the pump energize when you turn the key to on//// yes/no if yes fuel pump and driver module are good dirty filter suspected ///if no fuel pump driver module ,relay,fuse ,fuel pump, I'm not a diesel guy , gas my specialty but check for spark / power to glow plugs if you have an ignition module or idle air control valve look up a parts company where you are /country and search your vehicle parts in US ONLY GAS PARTS
0helpful
1answer

Fuel control module 2008 escalade and the fuel pump quit working.if I run a hot wire to it it will run but as soon as I remove the hot wire it quits

Ran a hot wire to what fuel pump or the control module ? Which of these is yours ?
Figure 9: Fuel Controls - Fuel Pump Controls (LY6)
Figure 10: Fuel Pump Flow Control Module (Except LY6) Does yours have fuel pump flow control module under the vehicle Fuel Pump Flow Control Module (except LY6)
Mounted to the left side of the frame assembly below the driver seat ?
Fuel Pump Flow Control Module (FPCM) - LMF
The fuel pump flow control module (FPCM) is a serviceable GMLAN module. The FPCM receives the desired fuel pressure message from the engine control module (ECM) and controls the fuel pump located within the fuel tank to achieve the desired fuel pressure. The FPCM sends a 25 KHZ PWM signal to the fuel pump, and pump speed is changed by varying the duty cycle of this signal. Maximum current supplied to the fuel pump is 15 amps. A liquid fuel pressure sensor provides fuel pressure feedback to the FPCM.
Electronic Returnless Fuel System (ERFS) - LMF
The electronic returnless fuel system is a microprocessor controlled fuel delivery system which transports fuel from the tank to the fuel rails. It functions as an electronic replacement for a traditional, mechanical fuel pressure regulator. A pressure vent valve within the fuel tank provides an added measure of fuel pump flow control module (FPCM). Desired fuel pressure is commanded by the engine control module (ECM), and transmitted to the FPCM via a GMLAN serial data message. A liquid fuel pressure sensor provides the feedback the FPCM requires for Closed Loop fuel pressure control.
If your vehicle has this system check it for DTC'S - diagnostic trouble codes . Will take guess work out of it .
DTC P0191: Fuel Rail Pressure (FRP) Sensor Performance
DTC P0192: Fuel Rail Pressure (FRP) Sensor Circuit Low Voltage
DTC P0193: Fuel Rail Pressure (FRP) Sensor Circuit High Voltage
DTC P0230: Fuel Pump Relay Control Circuit
DTC P0231: Fuel Pump Control Circuit Low Voltage
DTC P0232: Fuel Pump Control Circuit High Voltage
DTC P023F: Fuel Pump Control Circuit
The engine control module (ECM) supplies voltage to the fuel pump flow control module (FPCM) when the ECM detects that the ignition is on. The voltage from the ECM to the FPCM remains active for 2 seconds, unless the engine is in crank or run. While this voltage is being received, the FPCM supplies a varying voltage to the fuel tank pump module in order to maintain the desired fuel rail pressure.
DTC P025A: Fuel Pump Control Module Enable Circuit .
Ford Electronic Returnless Fuel System Diagnosis Part 1 this for ford but the GM system works the same . You'll need a wiring diagram so you know what wires are what . Free wiring diagrams http://www.bbbind.com/free_tsb.html
0helpful
1answer

No start no fuel or spark

What about your ignition module? I can't tell if you just replaced coils or ignition module included? Also, before buying anything, check voltage and ground for ignition module. Pink wire is voltage, black wire is ground.

The crank sensor sends ac signal to ignition module, the module converts signal to dc, something the computer can handle, then sends rpm signal to computer.
1helpful
1answer

Hi i am still getting problems with this 2008 chavy tahoe, affter changeing the fuel pump, it drive a little and cutting off ,two codes comeing up p025A and P0452 .and the nigative wire getting hot.

DTC P025A: Fuel Pump Control Module Enable Circuit
Your problem is the fuel pump control module , do you know what this is !
Circuit/System Description
The engine control module (ECM) supplies voltage to the fuel pump flow control module (FPCM) when the ECM detects that the ignition is on. The voltage from the ECM to the FPCM remains active for 2 seconds, unless the engine is in crank or run. While this voltage is being received, the FPCM supplies a varying voltage to the fuel tank pump module in order to maintain the desired fuel rail pressure.
Electronic Returnless Fuel System (ERFS) - LMF
The electronic returnless fuel system is a microprocessor controlled fuel delivery system which transports fuel from the tank to the fuel rails. It functions as an electronic replacement for a traditional, mechanical fuel pressure regulator. A pressure vent valve within the fuel tank provides an added measure of fuel pump flow control module (FPCM). Desired fuel pressure is commanded by the engine control module (ECM), and transmitted to the FPCM via a GMLAN serial data message. A liquid fuel pressure sensor provides the feedback the FPCM requires for Closed Loop fuel pressure control.
Fuel Pump Flow Control Module (except LY6)
Mounted to the left side of the frame assembly below the driver seat
DTC P0452: Fuel Tank Pressure (FTP) Sensor Circuit Low Voltage


What negative wire gets hot ?
What
your pro
0helpful
1answer

Code p025a fuel pump module tested relay it is good why is there power on # 85 with key off

DTC P025A: Fuel Pump Flow Control Module Enable Circuit
The engine control module (ECM) supplies voltage to the fuel pump flow control module (FPCM) when the ECM detects that the ignition is on. The voltage from the ECM to the FPCM remains active for 2 seconds, unless the engine is in crank or run. While this voltage is being received, the FPCM closes the ground switch of the fuel pump and also supplies a varying voltage to the fuel tank pump module in order to maintain the desired fuel rail pressure.
Circuit/System Testing
  1. Ignition OFF, disconnect the harness connector at the FPCM.
  2. Ignition OFF, install a test lamp between the control circuit terminal 13 and ground.
  3. Ignition ON, verify that a test lamp illuminates for 2 seconds.
  4. ?‡'
    If the test lamp does not illuminate, test the control circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the ECM.

  5. If all circuits test normal, replace the FPCM.
Relay for what ? Which engine do you have LY6 or non LY6
1helpful
1answer

Fuse Box Diagrams (Inside and Engine) for 2009 Volkswagen Tigua?

Attached are the diagrams requested - good luck!
Fascia 1
tiguanfascia1.jpg

Fuse, (Amps), Circuit
F1 -
F2 -
F3 -
F4 -
F5 -
F6 -
F7 -
F8 -
F9 (5A) Supplementary restraint system (SRS) control module
F10 (10A) Four wheel drive control module
F11 (5A) Parking aid control module, self-parking system control module
F12 (10A) Gas discharge headlamp control module (LH)
F13 (5A)
ABS/ESP system, AC system, anti-dazzle interior mirror, heated windscreen washer jets, seat occupation control
module, transmission control module (TCM), reversing lamps, engine management system
F14 (10A)
ABS control module, engine control module (ECM), heated seats, power steering control module, suspension
control module, trailer control module, AC control module, instrumentation control module, CAN data bus
gateway control module
F15 (10A)
Auxiliary heater, data link connector (DLC), parking brake control module, engine management, headlamp
direction control module
F16 (10A) Gas discharge headlamp control module (RH)
F17 (5A) Instrument panel
F18 (10A) Mobile telephone control module, multimedia control module
F19 (10A) Steering column function control module 2
F20 (5A) ABS control module, AC system, transmission control module (TCM)
F21 (15A) Door function control module, left rear, door function control module, right rear, multifunction control module 2
F22 (5A) Alarm system, multifunction control module 2
F23 (10A) ABS/ESP system, AC system, data link connector (DLC), rear view camera control module, headlamp switch
F24 (10A) Door function control module, driver, door function control module, passenger
F25 (20A) Transmission control module (TCM)
F26 -
F27 -
F28 (40A) AC control module, auxiliary heater
F29 (15A) Rear screen wiper motor
F30 -
F31 (20A) Auxiliary power sockets, cigarette lighter
F32 -
F33 -
F34 -
F35 -
F36 -
F37 -
F38 (10A) Steering column function control module 1
F39 (20A) Headlamp washers
F40 (15A) Trailer control module
F41 (15A) Trailer control module
F42 (20A) Trailer control module
F43 (25A) Sunroof control module
F44 (25A) Parking brake control module
F45 (25A) Heater blower motor, heated rear window
F46 (30A) Door function control module, driver, door function control module, passenger
F47 (30A) Door function control module, driver, door function control module, right rear
F48 (15A) Fuel pump (FP)
F49 (20A) multifunction control module 2
F50 (25A) Parking brake control module
F51 (40A) AC/heater blower motor control module
F52 (30A) Seat heater control module
F53
(20A/30A)
Headlamp washers
F54 (30A) Auxiliary power sockets
F55 (15A) Lumbar support adjustment
F56 (15A) Suspension control module
F57 (25A) Sun blind control module
F58 (1A) Trailer warning lamp
F59 (20A) Multimedia control module
F60 -

Fascia 3

fuses%2520fascia3.jpg


in engine bay

tiguan%2520125tsi%2520fuse%2520box%2520engine%2520%2520from%252005.2009.jpg

Fuse (Amps) Circuit
F1 -
F2 -
F3 (5A) Multifunction control module 2
F4 (30A) ABS/ESP system
F5 -
F6 (5A) Instrumentation control module, steering column function control module 2
F7 (40A) Ignition main circuits
F8 (25A) In-car entertainment (ICE)
F8 (25A) Voltage converter
F9 (5A) Mobile telephone control module
F10 (5A/10A) Engine control module (ECM)
F11 (20A) Auxiliary heater control module
F12 (5A) CAN data bus gateway control module
F13 (15A/30A) Engine control module (ECM)
F14 (5A) Engine management system
F15 (5A/10A/15A) Fuel pump (FP), AC compressor clutch, engine management system
F16 (30A) Multifunction control module 2
F17 (15A) Alarm system horn
F18 (30A) Audio system
F19 (30A) Windscreen wiper motor
F20 (10A) Engine management system
F21 (10A/20A) Engine management system, fuel pump (FP) control module
F22 (5A) Clutch pedal position (CPP) switch
F23 (10A) Engine management system
F24 (10A) Engine coolant blower motor control module, engine management system, engine coolant heater
F25 (40A) ABS/ESP system
F26 (30A) Multifunction control module 2
F27 -
F28 (50A) Glow plug control module
F29 (50A) Electric seats
F30 (50A) Ignition switch circuits
Location Component
1 Petrol: Engine control (EC) relay 1
1 Diesel: Ignition main circuits relay
2 Petrol: Engine control (EC) relay 2
2 Diesel: Engine control (EC) relay
0helpful
1answer

Car still wont start

How do you assume your not getting any fuel
without checking fuel pump function & pressure,
to confirm

The ignition module also failed, as well as some or
all coils,doubt that

Was anything tested at all & how?
0helpful
2answers

My 93 cougar like sputters when running. no power, and idles real hard. what could this be?

I'm guessing fuel pump is going. Check for 40 PSI pressure with fuel pressure gauge. Check in engine comaprtment.
Section 10-01: Fuel Tank, Filters, Lines and Electric Fuel Pump 1995 Thunderbird, Cougar Workshop Manual
DESCRIPTION AND OPERATION Fuel Pump, Electric The electric fuel pump:
  • Is part of the fuel pump module.
  • Is located in an internal reservoir in the polyethylene fuel tank (9002) .
  • Is mounted with its inlet at the bottom of the reservoir.
  • Is designed to increase satisfactory pump operation during extreme vehicle maneuvers and steep climbs with low fuel levels.
  • The high-pressure fuel pump module on the 3.8L SFI and 4.6L-2V engines can supply 60 liters (15.9 gal) of fuel per hour at a working pressure of 269.0 kPa (39 psi).
  • The fuel pump module on the 3.8L SC SFI engine can supply 125 liters (29.0 gal) at the same rate and pressure.
  • The fuel pump module has an internal check valve to maintain pressure in the system after the engine is shut down.
  • The fuel pump module also has an internal release valve to provide protection from too much pressure if fuel flow becomes clogged in the fuel filter (9155) , the fuel line is damaged, or other factors.
  • Overpressure is limited to 850 kPa (123 psi) and reduced fuel flow will result if the pressure relief valve is activated.
  • The fuel pump module is protected at its inlet by a nylon fuel filter element (9365) which filters contaminants which could plug or damage fuel pump components.
  • The fuel filter element simultaneously allows passage of small quantities of water which may accumulate within the tank reservoir.
  • The electrical system has a fuel pump control relay in the powertrain control module (PCM) (12A650) which provides power to the fuel pump module through an inertia fuel shutoff switch (IFS switch) (9341) that is normally closed.
  • The electrical system provides power to the fuel pump module through two relays:
    • Fuel pump power relay.
    • PCM power relay.
The current path depends on operating conditions.
  • When the ignition switch (11572) is OFF, contacts of both relays are open.
  • When the ignition switch is first turned to RUN, the PCM power relay energizes and closes its contacts.
  • Power is sent to the fuel pump relay and a timing device in the powertrain control module .
  • The fuel pump module runs through the contacts of the fuel pump relay.
  • If ignition switch is not turned to START, the timing device in the powertrain control module will open ground Circuit 57 after about a second.
  • Opening the ground circuit deenergizes the fuel pump relay, which opens its contacts and de-energizes the fuel pump.
  • The circuitry provides pre-pressurization of the fuel system.
  • When the ignition switch is turned to START, the powertrain control module operates the fuel pump relay to provide fuel while cranking.
  • After the engine starts and the ignition switch is ON, power to the fuel pump module is again supplied through the fuel pump relay. The powertrain control module senses engine speed and shuts the fuel pump module OFF by opening the ground circuit to the fuel pump relay when the engine stops or is below 120 rpm.



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0helpful
2answers

96 chev 1500 no power to fuel pump. changed the

possibly fuse or could be oil pressure swich
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