APPLIES TO: The 60-pin PCM connector pin-out tables apply only to:
- Dodge Ram 150 Pickup 5.2L V8: 1990, 1991.
- Dodge Ram 250 Pickup 5.2L V8: 1990, 1991.
- Dodge Ram 150 Pickup 5.9L V8: 1990, 1991.
- Dodge Ram 250 Pickup 5.9L V8: 1990, 1991.
- Dodge Ram 350 Pickup 5.9L V8: 1990, 1991.
CIRCUIT TEST TIPS:
| 1990-1991 5.2L, 5.9L V8 Ram Pickup PCM 60 Pin Connector | ||
|---|---|---|
| Pin | Wire Color | Description |
| 1 | DK GRN/RED | MAP Sensor Signal |
| 2 | TAN | Engine Coolant Temp (ECT) Sensor |
| 3 | RED | Battery (+) |
| 4 | BLK/LT BLU | Sensor Return |
| 5 | BLK | Signal Ground |
| 6 | VIO/WHT | 5 Volt Supply |
| 7 | ORG | 8 Volt Input |
| 8 | DK GRN/BLK | Auto Shutdown BATT Input |
| 9 | DK BLU | 12 Volt Ignition Feed |
| 10 | -Not Used- | |
| 11 | LT BLU/RED | Power Ground |
| 12 | LT BLU/RED | Power Ground |
| 13 | -Not Used- | |
| 14 | -Not Used- | |
| 15 | TAN | Injector Driver #2 |
| 16 | WHT/DK BLU | Injector Driver #1 |
| 17 | -Not Used- | |
| 18 | -Not Used- | |
| 19 | BLK/YEL (1990) | Ignition (IGN) Coil Driver |
| BLK/GRY (1991) | ||
| 20 | DK GRN | Alternator (ALT) Field Driver |
| 21 | BLK/RED | Throttle Body Temp Sensor |
| 22 | ORG/DK BLU | Throttle Position Sensor (TPS) Signal |
| 23 | -Not Used- | |
| 24 | GRY | Distributor Pickup Coil Signal |
| 25 | PNK | SCI Transmit (Diagnostic Link Connector) |
| 26 | -Not Used- | |
| 27 | BRN | A/C Clutch Input |
| 28 | VIO | Closed Throttle Switch |
| 29 | WHT/PNK | Brake Sense |
| 30 | BRN/YEL | Park/Neutral Switch |
| 31 | -Not Used- | |
| 32 | BLK/PNK | Check Engine Light |
| 33 | TAN/RED | Cruise Control VAC |
| 34 | DK BLU/ORG | A/C WOT Cutout Relay |
| 35 | GRY/YEL | EGR Solenoid |
| 36 | BLK/ORG | Air Switching Solenoid |
| 37 | -Not Used- | |
| 38 | -Not Used- | |
| 39 | -Not Used- | |
| 40 | BRN | Auto Idle Speed Motor |
| 41 | BLK/DK GRN | O2 Sensor |
| 42 | -Not Used- | |
| 43 | -Not Used- | |
| 44 | ORG/WHT | Overdrive Lockout |
| 45 | LT GRN | SCI Receive (Diagnostic Link Connector) |
| 46 | -Not Used- | |
| 47 | WHT/ORG | Speed Sensor Signal |
| 48 | BRN/RED | Cruise Control Set |
| 49 | YEL/RED | Cruise Control ON/OFF |
| 50 | WHT/LT GRN | Cruise Control Resume |
| 51 | DK BLU/YEL | Auto Shutdown (ASD) Relay Control |
| 52 | PNK | Purge Solenoid |
| 53 | LT GRN/RED | Cruise Control Vent |
| 54 | ORG/BLK | Part Throttle Unlock Solenoid |
| 55 | ORG/LT GRN | O/D Lockout Solenoid |
| 56 | GRY/PNK | Emission Maintenance Light |
| 57 | -Not Used- | |
| 58 | -Not Used- | |
| 59 | -Not Used- | |
| 60 | GRY/RED | Auto Idle Speed Motor |
PCM Pin-Out Charts
- PCM Pin Out Chart (1989 5.2L, 5.9L V8 Dodge Ram Pickup).
- PCM Pin Out Chart (1992 5.2L, 5.9L V8 Dodge Ram Pickup).
- PCM Pin Out Chart (1993 5.2L, 5.9L V8 Dodge Ram Pickup).
- PCM Pin Out Chart (1994 5.2L, 5.9L V8 Dodge Ram Pickup).
- PCM Pin Out Chart (1995 5.2L, 5.9L V8 Dodge Ram Pickup).
- PCM Pin Out Chart (1996 5.2L, 5.9L V8 Dodge Ram Pickup).
Safety Precautions
Here are some very important safety precautions when testing the wires coming out of the 60 pin PCM connector.
- If one or any of the wires on your Dodge Ram 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 Ram pickup.
- 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.
- You should use a wire piercing probe and probe the wire a few inches away from the connector.
- 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.
If this info saved the day, buy me a beer!
