Patriot 2WD L4-2.4L (2009)
The SKIS Secret Key is an ID code that is unique to each SKREEM/WCM. This code is programmed and stored in the SKREEM/WCM, the
PCM/ECM, and each ignition key transponder chip. When the PCM/ECM or SKREEM/WCM is replaced, it is necessary to program the Secret Key into
the new module using a diagnostic scan tool. Follow the programming steps outlined in the diagnostic scan tool for PCM REPLACED, ECM
REPLACED, WCM REPLACED, or GATEWAY REPLACED under MISCELLANEOUS FUNCTIONS for the WIRELESS CONTROL
MODULE/WCM menu item as appropriate.
NOTE: Programming the PCM/ECM or SKREEM is done using a diagnostic scan tool and a PIN to enter secure access mode. If three
attempts are made to enter secure access mode using an incorrect PIN, secure access mode will be locked out for one hour. To exit this
lockout mode, turn the ignition to the RUN position for one hour then enter the correct PIN. Be certain that all accessories are turned
OFF. Also monitor the battery state and connect a battery charger if necessary.
NOTE: Before replacing the ECU for a failed driver, control circuit or ground circuit, be sure to check the related component/circuit integrity
for failures not detected due to a double fault in the circuit. Most ECM driver/control circuit failures are caused by internal
component failures (i.e. relay and solenoids) and shorted circuits (i.e. pull-ups, drivers and switched circuits). These failures are
difficult to detect when a double fault has occurred and only one DTC has set.
ECM/SKIM/WCM PROGRAMMING
When a ECM and the SKIM are replaced at the same time perform the following steps in order:
1. Program the new SKIM
2. Program the new ECM
3. Replace all ignition keys and program them to the new SKIM.
ECM/SKIM/WCM PROGRAMMING
When an ECM (Bosch) and the SKIM are replaced at the same time perform the following steps in order:
1. Program the new SKIM
2. Program the new ECM (Bosch)
3. Replace all ignition keys and program them to the new SKIM.
PROGRAMMING THE SKIM
CAUTION: Read all notes and cautions for programming procedures.
1. Connect a battery charger to the vehicle.
2. Connect the StarSCAN(R).
CAUTION: If the ECM/PCM and SKREEM/WCM are replaced at the same time, the ECM/PCM MUST be programmed before the
SKREEM/WCM.
3. Select "ECU View".
4. Select "WCM Wireless Control Module".
5. Select "Miscellaneous Functions".
6. Select WCM replaced.
7. Enter the PIN when prompted.
8. Verify the correct information.
NOTE: If the ECM and the SKIM are replaced at the same time, all vehicle keys will need to be replaced and programmed to the new SKIM.
PROGRAMMING IGNITION KEYS TO THE SKREEM
Each ignition key transponder also has a unique ID code that is assigned at the time the key is manufactured. When a key is programmed into the
SKREEM/WCM, the transponder ID code is learned by the module and the transponder acquires the unique Secret Key ID code from the
SKREEM/WCM. To program ignition keys into the SKREEM/WCM, follow the programming steps outlined in the diagnostic scan tool for
PROGRAM IGNITION KEYS OR KEY FOBS under MISCELLANEOUS FUNCTIONS for the WIRELESS CONTROL MODULE/WCM
menu item.
NOTE: If the original keys do not successfully program to the new SKREEM after the proper procedures are followed correctly,
programming new keys will be necessary.
NOTE: A maximum of eight keys can be learned to each SKREEM. Once a key is learned to a SKREEM, that key has acquired the Secret
Key for that SKREEM and cannot be transferred to any other SKREEM or vehicle.
