Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2012 Chrysler 300 AWD V8-5.7LFACTORY OEM SERVICE PROCEDURE
Powertrain Control Module - Installation
GAS
1. If removed, position the Powertrain Control Module (PCM) mounting bracket (1) onto the PCM (4), install the two retaining nuts (2) and tighten to 8 Nm (71 in. lbs.).
2. If removed, install the NVH rubber bumper (3) onto the PCM.
NOTE: Prior to reconnecting the electrical connectors to the PCM, check the pins in the electrical connectors for misalignment and/or damage. Repair as necessary.
3. Position the PCM (3) into the vehicle.
4. Connect the PCM harness connectors (2).
5. Position the PCM bracket to the cross support, install the retaining bolt (1) and tighten to 16 Nm (12 ft. lbs.).
6. Position the front cowl top panel (1) to the right rear corner of the engine compartment.
7. Install the two push-pins (2) that secure the front cowl top panel.
8. Connect the negative battery cable and tighten nut (1) to 5 Nm (45 in. lbs.).
NOTE: If a new PCM is installed, it must be programed with the original Vehicle Identification Number (VIN) and mileage. If this is not done, a Diagnostic Trouble Code (DTC) may set.
NOTE: If a new PCM is installed PCM/ECM Reprogramming.
9. If a new PCM is being installed, use a scan tool and program the new PCM with the original VIN and vehicle mileage.
Factory Service Tools
Use the Manual With the Right Hardware
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- β’ You smell fuel, burning insulation, or see smoke.
- β’ Brakes feel soft, pull hard to one side, or make grinding noises.
- β’ The engine overheats, stalls repeatedly, or misfires under load.
- β’ You are missing required tools, torque specs, or safe lifting equipment.
- β’ You are not confident in the next step or safety outcome.
