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.
Powertrain Control Module (Pcm)
On Hombre, PCM is located on the right hand side of the engine compartment. On Amigo, Rodeo, Trooper and VehiCROSS, PCM is located below center console.
PCM analyzes all electrical data signals from input devices to control fuel injection, ignition and emissions. PCM includes a backup fail-safe control system. If a malfunction should occur in any PCM controlled systems, in most cases PCM will substitute default settings to maintain necessary engine functions and permit operation of vehicle.
Electronically Erasable Programmable Read Only Memory (EEPROM) is factory-programmed engine calibration data, which modifies PCM for specific transmission, engine, emission, vehicle weight and rear axle ratio application. It can be reprogrammed using Tech II scan tool. It is permanently soldered into PCM and is not replaceable separately. If battery voltage is removed, EEPROM information is retained.
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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