1998-2001 2.5L Ford Ranger PCM Pin Out Chart

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 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.
   • You should use a wire piercing probe and probe the wire a few inches away from the connector.
     • To see what this tool looks like: Wire Piercing Probe.
   • 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:

• Ignition System Circuit Diagram (1998-2001 2.5L Ford Ranger).
• Oxygen Sensor Circuit Diagram (1998-2001 2.5L Ford Ranger).
• How To Test The Front O2 Sensor Heater (1998-2001 2.5L Ford Ranger).
• Rear O2 Sensor Heater Test (1998-2001 2.5L Ford Ranger).