99 GRAND CHEROKEE 4.0L A/T ECU ECM PCM ENGINE CONTROL COMPUTER 56041423AH TESTED PCM

Part Number

56041423AH

ECU has no security enabled - you will have black or metal keys.

We offer FREE programming, see details below!

Fitment/Interchange

This ecu will interchange or replace the following part numbers:

56041423AA

56041423AB

56041423AC

56041423AD

56041423AE

56041423AF

56041423AG

56041423AH

P56041423AH

R6041423AH

56041423

Tech Notes

ECU has been tested with our state of the art vehicle simulator which tests over 25 circuits of the ECU! Some of those are listed below:
• Reference Voltage Good!
• ECU powered up and has communication!
• ECU fuel pump/main relay test good!
• ECU injectors/coils test good and much more!

Install Notes

• Disconnect the negative terminal of the battery. Make sure the battery connector is not touching the battery post.
• Disconnect and remove the module to be replaced.
• Install and connect the replacement module.
• Connect the negative terminal of the battery.
• See "Programming" below for additional install instructions. 

Programming 

For Plug and Play you must follow the below three steps:

Step 1: Match your part number series per above fitment guide

Step 2: Match your ecu security. The security for this ecu is listed above. Chrysler/Dodge have 4 levels of security as follows:
               A - No Security - You will generally have oem black ignition keys or unchipped keys.
               B - SKIM Security - You will generally have oem grey ignition keys or chipped keys.
               C - VTSS Security - You will have a flashing/blinking light on your speedometer when the vehicle is turned off and the doors locked.
                      It will usually blink for roughly 20 seconds.
               D - SKIM VTSS - In rare cases you will have both SKIM and VTSS

Step 3: Program ecu to your VIN and mileage. We provide free programming for our customers. During checkout you must list your VIN and mileage in the "Notes to Seller" for us to program the ECM. If we do not hear from you through the order notes or a message through eBay we will assume your mechanic is performing the programming (no problem at all) and we will ship the ECM out the next business day as directed by eBay.

Item Condition

• Mounting points are all open and intact
• Pins perfect, none are broken or bent
• Connectors may have some chipped plastic but all locktabs are in place.

Warranty

This ECM comes with a 90 day warranty from the date of purchase. Please keep a copy of your purchase record which we will send with your item.