Dorman 318-121 engine control module (ecm) for the 2002 Jeep Grand Cherokee 6-cylinder 4.0L processes sensor inputs to control ignition and fueling. This remanufactured unit, also known as a powertrain control module, is tested to meet original equipment performance.
- Remanufactured and tested in a dedicated facility for durability
- Functional testing includes hot and cold chamber testing
- Flashable, with no flash programming required
- 96 male pin terminals across three connectors
Quick facts
- Part: Dorman 318-121 engine control module (ecm)
- Fits: 2002 Jeep Grand Cherokee 6-cylinder 4.0L
- Condition: Remanufactured
A failing ECM can show up as a no-start, stalling or a lit check engine light, but sensors, wiring and fuel or ignition parts produce those symptoms too. With the engine off, look over the connectors and wiring for bent pins, corrosion or damage first; a shop can scan for codes and test the module.
Fits
This ECM is a direct-fit replacement for the 2002 Jeep Grand Cherokee 6-cylinder 4.0L, which takes one module.
Specifications
Fit and size
- Quantity per vehicle: 1
- Mounting holes: 3
- Connectors: 3, rectangular, gray, female
Build and materials
- Condition: Remanufactured
- Removable PROM: No
- Country of origin: United States
In the box
One engine control module. The wire harness and mounting hardware are not included, so plan on new fasteners, since the old ones may not be reusable.
Interchange: 79-4357V · 79-4435V
ECC12313 · 56044357AA · 56044357AB · R6044357AB
This part cross-references / interchanges with the following part numbers:
ECC12313, 79-4357V, 79-4435V, 56044357AA, 56044357AB, R6044357AB
Frequently Asked Questions
Is the Dorman 318-121 the right ECM for a 2002 Jeep Grand Cherokee 6-cylinder 4.0L?
Yes. Dorman 318-121 is listed for the 2002 Jeep Grand Cherokee 6-cylinder 4.0L, and that vehicle takes one module.
Does this ECM come with a wiring harness?
No. This listing is one engine control module; the wire harness and mounting hardware are not included.
How many terminals does this ECM have?
Dorman 318-121 has 96 male pin terminals across three connectors, and the module has three mounting holes.
Does this remanufactured ECM need flash programming?
No. Flash programming is not required for the Dorman 318-121, although the module is flashable.
Does this ECM have a removable PROM?
No. This engine control module has no removable PROM.
