Grand Caravan V6-3.8L VIN L (2007)
Engine Control Module: Procedures
Programming the Powertrain Control Module
PROGRAMMING THE POWERTRAIN
CONTROL MODULE
Important Note: Before replacing the PCM 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 PCM driver/control circuit failures are caused by internal failure to components (i.e.
12-volt pull-ups, drivers and ground sensors). These failures are difficult to detect when a double fault has occurred and only one DTC has set.
NOTE: If the PCM and the SKREEM are replaced at the same time, program the VIN into the PCM first. All vehicle keys will then need to be replaced
and programmed to the new SKREEM.
The SKREES Secret Key is an I.D. code that is unique to each SKREES. This code is programmed and stored in the SKREEM, engine controller and
transponder chip (ignition key). When replacing the PCM it is necessary to program the secret key into the PCM.
NOTE: After replacing the PCM, you must reprogram pinion factor.
1. Turn the ignition on (transmission in park/ neutral).
2. Use the DRBIII(R) and select THEFT ALARM, SKREEM then MISCELLANEOUS.
3. Select PCM REPLACED.
4. Enter secured access mode by entering the vehicle four-digit PIN.
NOTE: If three attempts are made to enter the secure access mode using an incorrect PIN, secured 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. (Ensure all accessories are turned off. Also monitor the
battery state and connect a battery charger if necessary).
5. Press ENTER to transfer the secret key (the SKREEM will send the secret key to the PCM).
Pinion Factor Setting
PINION FACTOR SETTING
NOTE: This procedure must be performed if the PCM has been replaced with a NEW or replacement unit. Failure to perform this procedure will result
in an inoperative or improperly calibrated speedometer.
The vehicle speed readings for the speedometer are taken from the output speed sensor. The PCM must be calibrated to the different combinations of
equipment (final drive and tires) available. Pinion Factor allows the technician to set the Powertrain Control Module initial setting so that the
speedometer readings will be correct. To properly read and/or reset the Pinion Factor, it is necessary to use a scan tool.
1. Plug the scan tool into the diagnostic connector located under the instrument panel.
2. Select the Transmission menu.
3. Select the Miscellaneous menu.
4. Select Pinion Factor. Then follow the instructions on the scan tool screen.
Quick Learn Procedure
QUICK LEARN PROCEDURE
The quick learn procedure requires the use of the DRBIII(R) scan tool. This program allows the PCM to recalibrate itself. This will provide the best
possible transaxle operation.
NOTE: The quick learn procedure should be performed if any of the following procedures are performed:
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Transaxle Assembly Replacement
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Powertrain Control Module Replacement
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Solenoid/Pressure Switch Assembly Replacement
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Clutch Plate and/or Seal Replacement
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Valve Body Replacement or Recondition
To perform the Quick Learn Procedure, the following conditions must be met:
