Jeep Cherokee Powertrain Control Module PCM Initialization Guide

When a Powertrain Control Module (PCM) is replaced on vehicles equipped with the Sentry Key™ Theft Deterrent System, it must be initialized to properly function with the anti-theft module. This is accomplished at a Chrysler Group Dealer by using the DRBIII® or StarSCAN™ Scan Tool to enter a PIN number.

When the PIN number is not available from the vehicle owner or a Chrysler Group Scan Tool(s) is not available this can be accomplished by writing the Vehicle Identification Number (VIN) into the PCM using an after-market scan tool with a “VIN Write Function”.

More information is available from the scan tool manufacturer or the Equipment & Tool Institute.

NOTE: After performing this procedure with an after-market scan tool on vehicles equipped with Chrysler Group’s Next Generation Controller (NGC),Diagnostic Trouble Code (DTC) “P0633 – SKIM SECRET KEY DATA NOT STORED IN PCM” will be set. This DTC will not effect vehicle or system performance and cannot be erased.



Initializing the PCM on these vehicles requires the use of a DaimlerChrysler scan tool (DRBIII®), J1962 MMC Cable, and ST22 PCMCIA Diagnostic Card.


Initializing the PCM on these vehicles requires the use of a DaimlerChrysler scan tool (DRBIII®), Multiplexer cable box, and the CH9043 Crossfire or CH9087 Sprinter PCMCIA card. This equipment is available for lease from DaimlerChrysler for short periods of time.



2001 – 2004 (AN) Dakota

2004 – 2005 (CS) Pacifica

2001 – 2003 (DN) Durango

2002 – 2005 (DR) Ram Truck

2004 – 2005 (HB) Durango

1999 – 2000 (JA) Breeze/Cirrus/Stratus

2001 – 2005 (JR) Sebring Convertible/Sebring Sedan/Stratus Sedan

1998 – 2000 (JX) Sebring Convertible

2002 – 2005 (KJ) Liberty

1999 – 2004 (LH) 300M/Concorde/Intrepid/LHS

2005 (LX) 300/Magnum

2005 (ND) Dakota

2000 – 2005 (PL) Neon/SX 2.0

2001 – 2005 (PT) Chrysler PT Cruiser/Chrysler PT Cruiser Convertible

2001 – 2005 (RS) Town & Country/Caravan/Voyager

2001 – 2005 (ST) Sebring Coupe/Stratus Coupe

1998 – 2005 (TJ) Wrangler

2004 – 2005 (VA) Sprinter

1999 – 2004 (WJ) Grand Cherokee

2005 (WK) Grand Cherokee

1999 – 2001 (XJ) Cherokee

2005 (ZB) Viper

2004 – 2004 (ZH) Crossfire Coupe/Crossfire Roadster

NOTE: The model years and vehicles above must be equipped (optional) with Sentry Key Theft Deterrent System (sales code GXX) for this bulletin to apply.


And for more Jeep repair case,check here:Jeep Repair Case,and Jeep Cherokee Trouble Repair.



1.Before replacing the PCM, with the ignition switch in the “RUN” position, determine the part number of the PCM software . Connect the CH9043 MUX Cable, and the DRBIII®(with the CH9044 Crossfire Software card or CH 9087 Sprinter Software card plugged into it); to the vehicle. Using the DRBIII® select:

a.”DRBIII® Standalone”

b.”1998 – 2005 Diagnostics”

c.Make the appropriate selection: “2004 – 2005 Crossfire” or “2003 – 2004 Sprinter”

d.“System Select”


f.Record the ten (10) character “P/N” on the repair order for later reference.

2.Open TechAUTHORITY. TechAUTHORITY is available on the internet,

3.At the “Home” page, open the “Powertrain Control Module Initialization” link.

4.Open the “Coding String Calculator for Sprinter & Crossfire Vehicles” link.

5.Open the “Select Module” pull down menu and select “PCM”.

6.Select the appropriate “Transmission Type” button (Manual or Automatic).

7.Carefully enter the 17 character VIN.

8.Carefully enter the PCM software p/n recorded on the repair order in Step 1.

9.Select the “Calculate” button at the bottom of the window.

NOTE: TechAUTHORITY will automatically populate the “Coding String”, “SCN”, and “CheckSum” information.

10.Print the information from the technician’s PC.

11.Using the DRBIII® select:

a.”1. DRBIII® Standalone”

b.”1. 1998 – 2005 Diagnostics”

c.Make the appropriate selection: “5. 2004 – 2005 Crossfire” or “6. 2003 – 2004 Sprinter”

d.“1. System Select”

e.“1. Engine”

f.“9. Miscellaneous Functions”

g.“6. Read PCM Coding”

h.Verify that the PCM coding string on the DRBIII® matches the coding string on the sheet printed from the technician’s PC.

NOTE: The SCN on the DRBIII® may not match with the SCN printed from the technician’s PC. This is OK.

12.Turn ignition switch to the “LOCK” position.

Visited 1 times, 1 visit(s) today