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Ecu Pinout '94 Vs '95 Pin Differences Probe

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ECU pinout '94 vs '95 pin differences [in brackets]/'93 differences in double asterisk (**) {Omaha95PGT-Marc M.}

Connector C246 (the left connector with 26 pins)

this pinout is facing the ECU/harnesses while it's still plugged in the car with the wires coming out at you.

1 2 3 4 5 6 7 8 9 10 11 12 13

14 15 16 17 18 19 20 21 22 23 24 25 26

1) #5 fuel injector

2) #3 fuel injector

3) #1 fuel injector

4) not used

5) Idle Air Control (IAC) solenoid output

6) Exhaust Gas Recirculation (EGR) vent solenoid

7) Fuel Pressure Regulator Control (FPRC) solenoid output

8) not used

9) VRIS #1 output

10) Ground Signal (Cylinder Identification [CID]) input

11) NE1 CKPS input (probably the camshaft position sensor in the distributor) ['95 not used]

12) Ground (CPU)

13) Ground (out)

14) #6 fuel injector

15) #4 fuel injector

16) #2 fuel injector

17) Fuel Pump Relay output

18) not used ['95 Crankshaft Position Signal (CPKs)]

19) EGR vacuum solenoid

20) High condenser-fan ['95 low speed condenser fan control-I think it's the same]

21) Low cooling-fan

22) VRIS #2 output

23) Cylinder Identification (CID) signal

24) NE2 CKPS ground ['95 Crankshaft Position Signal (CKPS) ?ground]

25) Ground (input)

26) Ground (out)

Connector C247 (middle connector with 16 pins)

1 2 3 4 5 6 7 8

9 10 11 12 13 14 15 16

1) Canister purge solenoid output

2) Knock sensor input

3) IAT input

4) +5V reference out

5) not used **'93 Engine Coolant Temp (Fan) [ECTF]**

6) Engine Coolant Temp Sensor (ECTS) input

7) Right Heated O2 Sensor (RHO2S) input <front head>

8) BARO sensor output (ATX)

9) High coolant fan (aka high speed condenser fan control)

10) not used

11) DRL load (Canadian only) (Daytime Running Lights)

12) Exhaust Gas Recirculation (EGR) valve position input

13) A/C High pressure input

14) Throttle Position Sensor (TPS) input

15) Left Heated O2 Sensor (LHO2S) input <rear head>

16) Volumetric Air Flow (VAF) sensor input

Connector C248 (the right connector with 22 pins)

1 2 3 4 5 6 7 8 9 10 11

12 13 14 15 16 17 18 19 20 21 22

1) Module ground

2) Reduce Torque Signal 1 input (ATX)

3) Brakelamp load input (ATX)

4) A/C dash switch [on/off] and Low Pressure input

5) VSS input (Vehicle Speed Sensor [+])

6) Torque reduced signal output

7) TEN DLC pin (Test ENgine Data Link Connector) (ATX)

8) Igniter output (aka Distributor Ignition)

9) Check Engine Lamp (CEL) Output

10) START signal input

11) Memory Backup Power/Keep Alive Power

12) Torque Reduce Signal 2 Input (ATX)

13) Idle switch input (closed Throttle input)

14) Neut./Clutch switch input

15) Blower load (motor on) input

16) Power Steering Pressure input

17) A/C & low condenser fan [95 A/C relay Output ?same]

18) Rear Window Defrost Load input

19) Headlamp load input

20) FEN DLC pin (Data Link Connector)

21) MEN DLC pin (Data Link Connector)

22) Main PCM Power

ecu_pinout.pdf

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