1998, 1999, 2000, 2001 2.5L Ford Ranger 104 PCM Connector Pin Out
1998-2001 2.5L Ford Ranger 104 PCM Pin Connector (Continued)
53 PNK/BLK Shift Solenoid #3 Control
54 PNK/YEL Torque Converter Clutch Solenoid
55 YEL Keep Alive Power (Battery +)
56 LT GRN/BLK EVAP Canister Purge Valve
57 --- Not Used
58 GRY/BLK
Vehicle Speed Sensor (VSS) (+)
59 ---
60 GRY/LT BLU Heated Oxygen Sensor #1 (HO2S 11) Input
61 --- Not Used
62 RED/PNK Fuel Tank Pressure
63 --- Not Used
64 LT BLU/YEL Transmission Range Sensor 3
65 BRN/LT GRN DPFE Sensor Signal (1998-2000 Only)
65 BRN/ORG DPFE Sensor Signal (2001 Only)
66 --- Not Used
67 VIO/WHT EVAP Canister Vent Solenoid
68 ---
69 PNK/YEL A/C Clutch Control Relay Output
70 --- Not Used
71 RED Power
72 --- Not Used
73 --- Not Used
74 BRN/YEL Fuel Injector #3
75 TAN Fuel Injector #1
76 BLK/WHT Power Ground
77 BLK/WHT Power Ground
78 TAN/LT GRN Ignition Coil #3 Control (Secondary Ignition Coil)
79 WHT/LT GRN Transmission Control Indicator
80 LT BLU/ORG Fuel Pump Relay Control
81 WHT/YEL Electronic Pressure Control (EPC) Solenoid
82 --- Not Used (1998-2000 Only)
82 BLK/WHT Check Fuel Cap Indicator (2001 Only)
83 WHT/LT BLU Idle Air Control (IAC) Valve
84 DK GRN/WHT Turbine Shaft Speed (TSS) Sensor
85 DK BLU/ORG Camshaft Position Sensor
86 BLK/YEL A/C Cycling Pressure Switch
87 --- Not Used
88 LT BLU/RED Mass Air Flow (MAF) Sensor Signal
89 GRY/WHT Throttle Position Sensor Signal
90 BRN/WHT 5 Volt Sensor Reference Voltage
91 GRY/RED Signal Return (Sensor Ground)
92 RED/LT GRN Brake On/Off Switch
93 RED/WHT Heated Oxygen Sensor #1 Heater Control
94 --- Not Used
95 WHT/BLK Heated Oxygen Sensor #2 Heater Control
96 --- Not Used
97 RED Power
98 --- Not Used
99 --- Not Used
100 BRN/LT BLU Fuel Injector #4
101 WHT Fuel Injector #2
102 --- Not Used
103 BLK/WHT Power Ground
104 TAN/LT BLU Ignition Coil #4 Control (Secondary Ignition Coil)

Location Of The PCM

The PCM Is Located On The Engine Firewall (1998, 1999, 2000, 2001 2.5L Ford Ranger)

The fuel injection computer (PCM) is located on the engine firewall of your 1998, 1999, 2000, 2001 2.5L Ford Ranger pickup truck.

Safety Precautions

Here are some very important safety precautions when testing the wires coming out of the 104 pin PCM connector.

  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 2.5L 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.

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

More 2.5L Ford Ranger Tutorials

You can find a complete list of tutorials here: Ford 2.5L Index Of Articles.

Here's a sample of the tutorials you'll find there:

  1. Ignition System Circuit Diagram (1998-2001 2.5L Ford Ranger).
  2. Oxygen Sensor Circuit Diagram (1998-2001 2.5L Ford Ranger).
  3. How To Test The Front O2 Sensor Heater (1998-2001 2.5L Ford Ranger).
  4. Rear O2 Sensor Heater Test (1998-2001 2.5L Ford Ranger).
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Ford Vehicles:

  • Ranger 2.5L
    • 1998,
      1999,
      2000,
      2001

Mazda Vehicles:

  • B2500 2.5L
    • 1998,
      1999,
      2000,
      2001