Ford Eec Iv Schematic

15-09-2021
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Ford EEC-IV Documents

Ford EEC-IV Connector Pinout

The EEC-IV adapter board kit allows you to install MegaSquirt into virtually any Ford vehicle that uses an EEC-IV computer, without cutting a single wire. Ford used the EEC-IV ECU from 1983 until 1995 in many of their US-market cars, including the 5.0 Mustang, Thunderbird Turbo Coupe, Merkur XR4Ti, pickup trucks, and countless Escorts, Tauruses. Ford EEC-IV Ignition Problem I have a 1986 Thunderbird with a 3.8 liter engine and the EEC-IV System. Recently it - Ford 1986 Thunderbird question.

EEC-IV Wiring Information
Pin NoWire ColourPurposeVoltage
1Not Used
2Not used
3Not Used
4Not Used
5Not Used
6Not Used
7Engine Coolant Temp20*C-3.1V, 40*C-2.2V, 100*C-0.5V
8Not Used
9Not Used
10Airconditioning Clutch On0V Aircon Off, 12V Aircon On
11Not Used
12Not Used
13Not Used
14Not Used
15Not Used
16Ground0V
17Self Test Output (STO)PWM signal 0V-12V
18Not Used
19Not Used
20Case Ground0V
21Idle Speed Control+8V to +11V Engine Running
22Fuel Pump Control+12V Ignition On
23Knock Sensor (Unleaded Only)+3V Engine Running
24Not Used
25Intake Air Temperature Sensor0*C 3.9V, 20*C 3,1V, 40*C 2.2V
26Sensor Reference Voltage+5V
27Air Flow Sensor (Unleaded Only)Variable Voltage
28Not Used
29Not Used
30Transmission PositionNeutral 0V-0.1V, In gear 5Volts
31Canister Purge8V-10V with Engine Running
32Not Used
33EGR Solenoid (Unleaded)Voltage Pulse @ 1800 RPM
34Data Output LinkPWM Data
35Canister Purge Solenoid (Unleaded)Voltage Pulse when Engine Running
35EGR Vent Solenoid (leaded)Voltage Pulse when Engine Running @ 1800RPM
36SPOUT (Spark Output) Ignition7V average with Engine Running
37Ignition Power12V with Ignition On
38Not Used
39Not Used
40Ground0Volts
41Not Used
42Not Used
43Air Flow Sensor (Leaded Only)Variable Voltage
44Not Used
45Not Used
46Signal Ground0Volts
47Throttle Position Sensor0.7V closed, 4.5V WOT (Wide Open)
48Self Test Input0Volts for Self Test, 12V Normal operation
49Not Used
50Not Used
51Not Used
52EGR Vent Solenoid (Unleaded)Voltage Pulse @ 1800 RPM
53Not Used
54EGR Vent Solenoid (leaded)Voltage Pulse @ 1800 RPM
55Not Used
56PIP Profile Ignition Pick Up0V - 12V on Ignition PIP
57Ignition Power0Volts Off, 12V Ignition On
58Fuel Injection Ignition Bank 1,3,5PWM On Fuel Injection
59Fuel Injection Ignition Bank 2,4,60Volts Off, 12V On
60Ground0Volts

See also

Eec Ford eec iv computer identification

The 1994 4.0L V6 Ford Explorer/Ranger is equipped with the E.E.C IV system and so its computer has 60 pins.

Whether you're tracing down an electrical short or testing one of the input/output components of the PCM, pinout charts come in handy. Below you'll find the description of each pin.

1994 4.0L Ford Explorer/Ranger 60 Pin Connector
PinWire ColorDescription
1YELKeep Alive Power (KAPWR)
2LT GRNBrake On-Off (BOO) Switch
3GRY/BLKVehicle Speed Sensor (VSS) (+)
4TAN/YELIgnition Diagnostic Monitor (IDM)
5--Not Used
6PNK/ORGVehicle Speed Sensor (VSS) (-)
7LT GRN/REDEngine Coolant Temp (ECT) Sensor
8DK GRN/YELFuel Pump Monitor (FPM)
9PNK/LT BLUMAF Ground
10DK GRN/ORGA/C Compressor
11--Not Used
12--Not Used
13--Not Used
14LT BLU/REDMAF Signal
15TAN/LT BLUMAF Ground
16ORG/REDIgnition Module Ground
17PNK/LT GRNCheck Engine Light (CEL)
18--Not Used
19--Not Used
20BLK/LT GRNCase Ground
21WHT/LT BLUIdle Air Control (IAC) Valve
22LT BLU/ORGFuel Pump Relay Control
23--Not Used
24--Not Used
25GRYIntake Air Temp (IAT) Sensor
26BRN/WHTVREF (5 Volt Reference - EGR Position Sensor, TPS, MAP Sensor)
27--Not Used
28TAN/ORGData (+)
29GRY/LT BLUO2 Sensor 1
30LT BLU/YELClutch Switch (MT only)
Park Neutral Safety Switch (AT only).
31GRY/YELCanister Purge (CANP) Solenoid
32--Not Used
33--Not Used
34---Not Used
35--Not Used
36PNKSPOUT
37REDIgnition Battery Power
38--Not Used
39RED/BLKO2 Sensor 2
40BLK/WHTPWR Ground
41--Not Used
42--Not Used
43--Not Used
44DK GRNOctane Adjust
45--Not Used
46GRY/REDSignal Return (Sensor Ground)
47GRY/WHTThrottle Position Sensor (TPS) Signal
48WHT/PPLSelf Test Input (STI)
49GRY/REDGround
50--Not Used
51--Not Used
52ORG/YELShift Solenoid 3-4
53PPL/YELTorque Convertor Clutch Solenoid
54PNK/YELAir Conditioning
55--Not Used
56GRY/ORGProfile Ignition Pickup (PIP)
57REDVPWR (From PCM Power Relay)
58TANInjector Bank 1
59WHTInjector Bank 2
60BLK/WHTPower Ground
Ford

Safety Precautions

Here are some very important safety precautions when testing the wires coming out of the 60 pin PCM connector.

Ford Eec Iv Computer Identification

  1. If one or any of the wires on your Ford pickup DO NOT match the color stated in the pin out charts, then you should not use the pin out charts in this article. Why? Because this is the clearest indication that these ARE NOT the connector pin out charts for your particular Ford 4.0L Explorer or 4.0L Ford Ranger.
  2. Never probe the front of the connector.
    1. You should use a wire piercing probe and probe the wire a few inches away from the connector.
      1. To see what this tool looks like: Wire Piercing Probe.
    2. You should use a back-probe.
  3. You should never disconnect any of the PCM connectors without first disconnecting the battery negative terminal.

Disclaimer

I've made every effort to double and triple check the above info (and in the next couple of pages) and I've used the best sources to compile it, but nothing in life is perfect. I don't have a staff of proof readers or editors, I'm just a little guy typing this stuff up in my spare time to help and give back to the Do-It-Yourself community. So without further ado, here's my disclaimer:

© copyright Abraham Torres-Arredondo: This information is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

Ford

Ford Eec Iv System

If you do spot errors, please let me know. You can use the contact form at the end of the article.

Ford Eec Iv Schematic

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