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Engine Control Module

Relays and Modules › Relays and Modules - Powertrain Management
Unified entry — merged from multiple cross-listed pages in the original manual.

Parts

PartAuto Trans
ManufacturerCHY
OEM part #RL150631AB
Price$244.00

Labor

Replace0.5 hr
Warranty 0.0 hrSkill B
Reset — ECM, Reprogram0.5 hr
Warranty 0.0 hrSkill B
Procedures
Powertrain Control Module - Removal5 steps
ℹ NOTE
Right hand drive PCM is in a different location (shown below).
Fig. 1
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Fig. 2
Fig. 2
  1. The PCM (Powertrain Control Module) (3-Left Hand Drive), or (3-Right Hand Drive) is located in the engine compartment.
  2. Disconnect negative battery cable.
  3. Disconnect PCM electrical connectors (4-Left Hand Drive), or (5-Right Hand Drive).
  4. Remove PCM mounting screws (5-Left Hand Drive), or (4-Right Hand Drive).
  5. Remove PCM (3-Left Hand Drive), or (3-Right Hand Drive) from vehicle. Right hand drive location:
Powertrain Control Module - Installation5 steps
ℹ NOTE
Right hand drive PCM is in a different location (shown below).
△ CAUTION
Refer to PCM/ECM REPROGRAMMING for reprogramming procedures. If this step is not performed, a Diagnostic Trouble Code (DTC) will be set.
△ CAUTION
Use the scan tool to reprogram the new PCM with the vehicles original identification number (VIN) and the vehicles original mileage. If this step is not performed, a Diagnostic Trouble Code (DTC) will be set.
Fig. 1
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Fig. 2
Fig. 2
  1. The PCM (Powertrain Control Module) (3-Left Hand Drive), or (3-Right Hand Drive) is located in the engine compartment.
  2. Position PCM (3-Left Hand Drive), or (3-Right Hand Drive) to vehicle.
  3. Install PCM mounting screws (5-Left Hand Drive), or (4-Right Hand Drive). Tighten screws to 8 Nm (71 in. lbs.) torque.
  4. Connect PCM electrical connectors (4-Left Hand Drive), or (5-Right Hand Drive).
  5. Connect negative battery cable. Right hand drive location:
Programming and Relearning — PCM/TCM Reprogramming66 steps
ℹ NOTE
If this flash process is interrupted or aborted, the flash should be restarted.
ℹ NOTE
If this flash process is interrupted or aborted, the flash should be restarted.
ℹ NOTE
If this flash process is interrupted or aborted, the flash should be restarted.
ℹ NOTE
Find the PCM/TCM Type for the vehicle, read and write down the steps, and then go to the step by step instructions for additional information on how to perform these procedures. STEP-BY-STEP INSTRUCTIONS
ℹ NOTE
The following step is required by law when reprogramming a PCM/ECM and/or TCM.
△ CAUTION
Extreme care must be taken when programming a calibration into a generic PCM. Do not randomly select a calibration. Once a calibration is selected and programmed, the controller cannot be reprogrammed to a different calibration. The module can only be reprogrammed to a more recent version of that calibration.
Fig. 1
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Fig. 3
Fig. 3
  1. A vehicle's Powertrain Control Module (PCM) has been replaced.
  2. A diagnostic trouble code (DTC) is set P1602 - PCM Not Programmed.
  3. An updated calibration or software release is available for either the PCM or TCM ECUs. This procedure assumes that the wiTECH(TM) Vehicle Connection Interface (VCI) pod, StarSCAN(R) and StarMOBILE(R) devices are configured to your dealership's network with either a wired or wireless connection. The wiTECH(TM) VCI pod, StarSCAN(R) and StarMOBILE(R) must also be running at the latest operating system and software release level. For more help on how to network your StarSCAN(R) or StarMOBILE(R) reference the StarSCAN(R) / StarMOBILE(R) Quick Start Networking Guide available on 'DealerCONNECT > Service > StarSCAN(R) and StarMOBILE(R) Tools > Online Documentation' or at www.dcctools.com, under the Download Center. For the wiTECH(TM) VCI pod use the "HELP" tab in the wiTECH(TM) Diagnostic Application. Table of contents
  4. SECTION 1 - PCM / TCM FLASH PROCEDURE SECTION 1 - PCM / TCM FLASH PROCEDURE
  5. REQUIRED TOOLS/EQUIPMENT REQUIRED TOOLS/EQUIPMENT:
  6. TECH TIPS and INFORMATION TECH TIPS and INFORMATION:
  7. PARTS REQUIRED PARTS REQUIRED SECTION 1 - PCM / TCM FLASH PROCEDURE If using StarSCAN(R) or StarMOBILE(R) Desktop Client. Go To REPAIR PROCEDURE - Using StarSCAN(R) or StarMOBILE(R) Desktop Client If using wiTECH(TM) Diagnostic Application. Go To REPAIR PROCEDURE - wiTECH(TM) Diagnostic Application REPAIR PROCEDURE - Using StarSCAN(R) or StarMOBILE(R) Desktop Client
  8. Open the hood of the vehicle and install a battery charger. Verify that the charging rate provides a continuous charge of 13.2 - 13.5 volts.
  9. Connect the StarSCAN(R) or StarMOBILE(R) to the vehicle data link connector located under the steering column and turn the ignition key to the "RUN" position.
  10. Power on the StarSCAN(R) or StarMOBILE(R). If the StarMOBILE(R) is being used, launch the StarMOBILE(R) Desktop Client and connect to the appropriate StarMOBILE(R) device.
  11. Retrieve the old ECU part number. From the tool's Home screen, a.Select "ECU View" b.Select "PCM/ECM" c.Select "More Options" d.Select "ECU Flash" e.Record the part number at the top of the Flash PCM/ECM screen for later reference.
  12. Program the ECU as follows: a.Using the StarSCAN(R) / StarMOBILE(R) at the Home screen, select "ECU View" b.Select "PCM/ECM" c.Select "More Options" d.Select "ECU Flash" e.Select "Browse for New File" and follow the on screen instructions. f.Highlight the appropriate calibration based on the part number recorded in Step 4e, or by using Year/Model/Engine and appropriate emissions selection for the vehicle being worked on.n Note: If you are not connected to the vehicle, you may also search for flash files by selecting the "Flash Download" button from the Home screen. g.Select "Download to Scantool" h.Once the download is complete, select "Close" and then "Back" i.Highlight the listed calibration, select "Update Controller" and follow the on screen instructions. j.When the PCM/ECM update is complete, select "OK" k.Verify that the part number at the top of the Flash PCM/ECM screen has updated to the new part number.
  13. Continue to SECTION 2 - ADDITIONAL PCM / TCM REPLACEMENT PROCEDURES to complete the process if the ECU has been replaced.
  14. Type the necessary information on the "Authorized Modification Label" (p/n 04275086AB) and attach near the VECI label SECTION 3 - AUTHORIZED MODIFICATION LABEL for details). REPAIR PROCEDURE - wiTECH(TM) Diagnostic Application
  15. Open the hood of the vehicle and install a battery charger. Verify that the charging rate provides a continuous charge of 13.2 - 13.5 volts.
  16. Connect the wiTECH(TM) Vehicle Connection Interface (VCI) pod to the vehicle data link connector located under the steering column and turn the ignition key to the "RUN" position.
  17. Launch the wiTECH(TM) Diagnostic Application and connect to the appropriate wiTECH(TM) device.
  18. From the wiTECH(TM) Diagnostic Application Home screen, a.Select "HELP" b.Select "HELP CONTENTS" c.Follow the correct "HELP TOPIC" for the ECU being programmed SECTION 2 - ADDITIONAL PCM / TCM REPLACEMENT PROCEDURES If an EDC16-U31 PCM/ECM (2.0L) was replaced, perform the following additional steps and/or routines:
  19. PCM/ECM Replaced - if WIN equipped
  20. Check PCM/ECM VIN - if NOT WIN equipped
  21. Program Variant Code If an EDC16-C2 PCM/ECM (2.2L) was replaced, perform the following additional steps and/or routines:
  22. PCM/ECM Replaced - if WIN equipped
  23. Check PCM/ECM VIN - if NOT WIN equipped
  24. IMA Rapid Calibration Test - Only on 06 PT AND up
  25. Injector Quantity Adjustment - Only on 06 PT AND up If an EDC16-CP31 (3.0L) was replaced, perform the following additional steps and/or routines:
  26. PCM/ECM Replaced - if WIN equipped
  27. Check PCM/ECM VIN - if NOT WIN equipped
  28. Diesel Particulate Filter (Used) Learning
  29. NOx Catalyst (New) Initialization
  30. Injector Quantity Adjustment
  31. IMA Rapid Calibration Test
  32. Fuel Mean Value Adaptation Initialization
  33. Exhaust Throttle Plate Adaptive Learn Position If an EDC16-CP31-2 (2.8L) was replaced, perform the following additional steps and/or routines:
  34. PCM/ECM Replaced - if WIN equipped
  35. Check PCM/ECM VIN - if NOT WIN equipped
  36. Injector Quantity Adjustment
  37. Program Variant Code
  38. ECU Replacement With Value Transfer - if the ECU to be replaced is still responsive
  39. ECU Replacement Without Value Transfer - if the ECU to be replaced is NOT responsive
  40. Fuel Mean Value Adaptation Initialization
  41. IMA Rapid Calibration Test
  42. Set Oil Dilution Mass Value If a CM849 PCM/ECM (5.9L) was replaced, perform the following additional steps and/or routines:
  43. PCM/ECM Replaced - if WIN equipped
  44. Check PCM/ECM VIN - if NOT WIN equipped If a CM2100 PCM/ECM (6.7l) was replaced, perform the following additional steps and/or routines:
  45. PCM/ECM Replaced - if WIN equipped
  46. Check PCM/ECM VIN - if NOT WIN equipped
  47. Enable / Disable Vehicle Features - need to enable features
  48. Injector Quantity Adjustment
  49. Reset Regenerative Filter Timers
  50. Mobile DeSoot - NO Minimum Required Soot Load If an Aisin TCM was replaced, perform the following additional steps and/or routines: If an EATX TCM was replaced, perform the following additional steps and/or routines: If an NGC3 TCM ONLY was replaced, perform the following additional steps and/or routines: If an NGC4 TCM ONLY was replaced, perform the following additional steps and/or routines:
  51. Quicklearn If an EGS TCM was replaced, perform the following additional steps and/or routines:
  52. Initialize EGS STEP-BY-STEP INSTRUCTIONS Check PCM/ECM VIN From the "Home" screen, select "ECU View" -Select "PCM/ECM" -Select "Misc. Functions" -Select "Check PCM/ECM VIN" and follow the on screen instructions. -When complete, select "Finish" Diesel Particulate Filter (Used) Learning From the "Home" screen, select "ECU View" -Select "PCM/ECM" -Select "Misc. Functions" -Select "Diesel Particulate Filter (Used) Learning" and follow the on screen instructions. -When complete, select "Finish" ECU Replacement with Value Transfer From the "Home" screen, select "ECU View" -Select "PCM/ECM" -Select "Misc. Functions" -Select "ECU Replacement with Value Transfer" and follow the on screen instructions. -When complete, select "Finish" ECU Replacement without Value Transfer From the "Home" screen, select "ECU View" -Select "PCM/ECM" -Select "Misc. Functions" -Select "ECU Replacement without Value Transfer" and follow the on screen instructions. -When complete, select "Finish" Enable / Disable Vehicle Features From the "Home" screen, select "ECU View" -Select "PCM/ECM" -Select "Misc. Functions" -Select "Enable / Disable Vehicle Features" and follow the on screen instructions. -When complete, select "Finish" Exhaust Throttle Plate Adaptive Learn Position From the "Home" screen, select "ECU View" -Select "PCM/ECM" -Select "Misc. Functions" -Select "Exhaust Throttle Plate Adaptive Learn Position" and follow the on screen instructions. -When complete, select "Finish" Fuel Mean Value Adaptation Initialization From the "Home" screen, select "ECU View" -Select "PCM/ECM" -Select "Misc. Functions" -Select "Fuel Mean Value Adaptation Initialization" and follow the on screen instructions. -When complete, select "Finish" IMA Rapid Calibration From the "Home" screen, select "ECU View" -Select "PCM/ECM" -Select "Misc. Functions" -Select "IMA Rapid Calibration Test" and follow the on screen instructions. -When complete, select "Finish" Initialize EGS From the "Home" screen, select "ECU View" -Select "PCM/ECM" -Select "Misc. Functions" -Select "Initialize EGS" and follow the on screen instructions. -When complete, select "Finish" Injector Quantity Adjustment From the "Home" screen, select "ECU View" -Select "PCM/ECM" -Select "Misc. Functions" -Select "Injector Quantity Adjustment" and follow the on screen instructions. -When complete, select "Finish" Mobile DeSoot - NO Minimum Required Soot Load From the "Home" screen, select "ECU View" -Select "PCM/ECM" -Select "Misc. Functions" -Select "Mobile DeSoot - NO Minimum Required Soot Load" and follow the on screen instructions. -When complete, select "Finish" NOx Catalyst (New) Initialization From the "Home" screen, select "ECU View" -Select "PCM/ECM" -Select "Misc. Functions" -Select "NOx Catalyst (New) Initialization" and follow the on screen instructions. -When complete, select "Finish" PCM/ECM Replaced The vehicle pin (Personal Identification Number) will be required to complete the routine. This information may be obtained in three ways:
  53. The original selling invoice
  54. DealerCONNECT > Parts > Key Codes
  55. Contacting the District Manager. From the "Home" screen, select "ECU View" -Select "WIN" -Select "Misc. Functions" -Select "PCM/ECM Replaced" and follow the on screen instructions. -When complete, select "Finish" Program Variant Code From the "Home" screen, select "ECU View" -Select "PCM/ECM" -Select "Misc. Functions" -Select "Program Variant Code" and follow the on screen instructions. -When complete, select "Finish" Quicklearn From the "Home" screen, select "ECU View" -Select "PCM/ECM" -Select "Misc. Functions" -Select "Quicklearn" and follow the on screen instructions. -When complete, select "Finish" Reset Regenerative Filter Timers From the "Home" screen, select "ECU View" -Select "PCM/ECM" -Select "Misc. Functions" -Select "Reset Regenerative Filter Times" and follow the on screen instructions. -When complete, select "Finish" Set Oil Dilution Mass Value From the "Home" screen, select "ECU View" -Select "PCM/ECM" -Select "Misc. Functions" -Select "Set Oil Dilution Mass Value" and follow the on screen instructions. -When complete, select "Finish" SECTION 3 - AUTHORIZED MODIFICATION LABEL Type the necessary information on the "Authorized Modification Label" and attach near the VECI label.
  56. Powertrain Control / Transmission Control Module Part Numbers (Insert P/Ns) Used
  57. Change Authority: TSB XX--XX
  58. Dealer Code: XXXXX
  59. Date: XX-XX-XX REQUIRED TOOLS/EQUIPMENT: TECH TIPS and INFORMATION:
  60. The wiTECH(TM) Diagnostic Application is the preferred method for flashing any Chrysler vehicle ECU. For more information, training tutorials are available under the "HELP" tab in the wiTECH(TM) Diagnostic Application or at www.dcctools.com, under the 'Training Aids' link.
  61. To use the StarMOBILE(R) in Pass-Through Mode requires that your StarMOBILE(R) is connected to the dealerships network via a wired or wireless connection. For more information on how to use the StarMOBILE in Pass-Through Mode see the StarMOBILE(R) training tutorials available on 'DealerCONNECT > Service > StarSCAN(R) and StarMOBILE(R) Tools > Training Aids' link or at www.dcctools.com, under the 'Training Aids' link.
  62. If the flash process is interrupted or aborted, the flash should be restarted.
  63. Due to the PCM/ECM / TCM programming procedure, a DTC may be set in other ECUs within the vehicle. Some DTCs may cause the MIL to illuminate. From the "Home" screen select "System View". Then select "All DTCs". Press "Clear All Stored DTCs" if there are any DTCs shown on the list.
  64. Do not allow the battery charger to time out or the charging rate to climb above 13.5 Volts during the flash process.
  65. The StarSCAN(R) and StarMOBILE(R) diagnostic tools fully support Internet connectivity and must be configured for your dealership's network. For help on setting up your StarSCAN(R) / StarMOBILE(R) for the dealership's network, refer to the StarSCAN(R) / StarMOBILE(R) Quick Start Networking Guide available on 'DealerCONNECT > Service > StarSCAN(R) and StarMOBILE(R) Tools > Online Documentation' or at www.dcctools.com, under the download center.
  66. The operating software in the StarSCAN(R) and StarMOBILE(R) must be programmed with the latest software release level. The software level is visible in the blue header at the top of the StarSCAN(R) and StarMOBILE(R) Desktop Client screens. For instructions on how to update your scan tool, refer to the StarSCAN(R) / StarMOBILE(R) Software Update guide available on 'DealerCONNECT > Service > StarSCAN(R) and StarMOBILE(R) Tools > Online Documentation' or at www.dcctools.com, under the download center. PARTS REQUIRED
Programming and Relearning — TCM Quick Learnreference
TCM QUICK LEARN The quick learn procedure requires the use of the scan tool. This program allows the electronic transmission system to recalibrate itself. This will provide the proper transmission operation. The quick learn procedure should be performed if any of the following procedures are performed: -Transmission Assembly Replacement -Transmission Control Module Replacement -Solenoid Pack Replacement -Clutch Plate and/or Seal Replacement -Valve Body Replacement or Recondition To perform the Quick Learn Procedure, the following conditions must be met: -The brakes must be applied -The engine speed must be above 500 rpm -The throttle angle (TPS) must be less than three degrees -The shift lever position must stay in PARK until prompted to shift to overdrive -The shift lever position must stay in overdrive after the Shift to Overdrive prompt until the scan tool indicates the procedure is complete. -The calculated oil temperature must be above 16° C (60° F) and below 93° C (200° F).
Programming and Relearning — TCM Drive Learn21 steps
ℹ NOTE
It is not necessary to perform the complete Drive Learn procedure every time the TCM is Quick Learned. Perform only the portions which target the objectionable shift.
ℹ NOTE
The transmission oil temperature must be between 27-43° C (80-110° F).
ℹ NOTE
It is important that this procedure be performed when the transmission temperature is between 27-43° C (80-110° F). If this procedure takes too long to complete fully for the allowed transmission oil temperature, the vehicle may be returned to the customer with an explanation that the shift will improve daily during normal vehicle usage. The TCM also learns at higher oil temperatures, but these values (line pressure correction values) are not available for viewing on the scan tool.
ℹ NOTE
The transmission oil temperature must be between 27-43° C (80-110° F) to learn the UD CVI. Additional learning occurs at temperatures as low as -18° C (0° F) and as high as 93° C (200° F). This procedure may be performed at any temperature that experiences poor shift quality. Although the UD CVI may not change, shift quality should improve.
ℹ NOTE
The transmission oil temperature must be above 27° C (80° F).
ℹ NOTE
The transmission oil temperature must be above 43° C (110° F).
ℹ NOTE
The transmission oil temperature must be above 43° C (110° F).
ℹ NOTE
The transmission oil temperature must be above 43° C (110° F).
ℹ NOTE
The transmission oil temperature must be above 43° C (110° F).
ℹ NOTE
The transmission oil temperature must be above 43° C (110° F).
ℹ NOTE
The transmission oil temperature must be above 43° C (110° F).
  1. Start the engine only when the engine and ignition have been off for at least ten (10) minutes.
  2. With the vehicle at a stop and the service brake applied, record the 1st N-D UD CVI while performing a Neutral to Drive shift. The 1st N-D UD CVI accounts for air entrapment in the UD clutch that may occur after the engine has been off for a period of time.
  3. Repeat 1 and 2 until the recorded 1st N-D UD CVI value stabilizes. LEARN A SMOOTH NEUTRAL TO DRIVE GARAGE SHIFT Perform this procedure if the complaint is for a delayed or harsh shift when the transmission is put into gear after the vehicle has had its first shift. Use the following steps to have the TCM learn the Norm N-D UD CVI.
  4. Start the vehicle engine and shift to drive.
  5. Move the vehicle forward to a speed of at least 16 km/h (10 MPH) and come to a stop. This ensures no air is present in the UD hydraulic circuit.
  6. Perform repeated N-D shifts at a stop while pausing in Neutral for at least 2-3 seconds and monitor Norm N-D UD CVI volume until the value stabilizes. The value will change during the N-D shift. This is normal since the UD value is different for the N-D shift then the normal value shown which is used for 4-3 coastdown and kickdowns. Perform repeated shifts in this temperature range until the Norm N-D UD CVI value stabilizes and the N-D shifts become smooth. LEARN THE 1ST 2-3 SHIFT AFTER A RESTART OR SHIFT TO REVERSE Use the following steps to have the TCM learn the 1st 2-3 shift OD CVI.
  7. With the vehicle engine running, select reverse gear for over 2 seconds.
  8. Shift the transmission to Drive and accelerate the vehicle from a stop at a steady 15 degree throttle opening and perform a 2-3 shift while noting the 1st 2-3 OD CVI.
  9. Repeat 1 and 2 until the 1st 2-3 upshift becomes smooth and the 1st 2-3 OD CVI stabilizes. LEARN A SMOOTH 2-3 AND 3-4 UPSHIFT Use the following steps to have the TCM learn the OD and 4C CVI's.
  10. Accelerate the vehicle from a stop at a steady 15 degree throttle opening and perform multiple 1-2, 2-3, and 3-4 upshifts. The 2nd 2-3 shift following a restart or shift to reverse will be shown during the shift as a value between the 1st 2-3 OD CVI and the normal OD CVI. Updates to the normal OD CVI will occur after the 2nd shift into 3rd gear, following a restart or shift to reverse.
  11. Repeat 1 until the 2-3 and 3-4 shifts become smooth and the OD and 4C CVI become stable. LEARN A SMOOTH 4-3 COASTDOWN AND PART THROTTLE 4-3 KICKDOWN Use the following steps to have the TCM learn the UD shift volume.
  12. At a vehicle speed between 64-97 km/h (40-60 mph), perform repeated 4-3 kickdown shifts.
  13. Repeat 1 until the UD volume becomes somewhat stable and the shift becomes smooth. LEARN A SMOOTH 1-2 UPSHIFT AND 3-2 KICKDOWN Use the following steps to have the TCM learn the 2C shift volume.
  14. With a vehicle speed below 48 km/h (30 mph) and the transmission in 3rd gear, perform multiple 3-2 kickdowns.
  15. Repeat 1 until the 3-2 kickdowns become smooth and the 2C CVI becomes stable. LEARN A SMOOTH MANUAL 2-1 PULLDOWN SHIFT AS WELL AS A NEUTRAL TO REVERSE SHIFT Use the following steps to have the TCM learn the LR volume.
  16. With the vehicle speed around 40-48 km/h (25-30 mph) in Manual 2nd, perform manual pulldowns to Low or 1st gear at closed throttle.
  17. Repeat 1 until the LR CVI becomes stable and the manual 2-1 becomes smooth. LEARN A SMOOTH NEUTRAL TO REVERSE SHIFT
  18. With the vehicle at a stop, perform Neutral to Reverse shifts until the shift is smooth. An unlearned Neutral to Reverse shift may be harsh or exhibit a double bump.
  19. If any of the shifts are still not smooth after the clutch volume stabilizes, an internal transmission problem may be present. LEARN A SMOOTH 4-5 UPSHIFT Use the following steps to have the TCM learn the Alt 2C CVI.
  20. Accelerate the vehicle through 88 km/h (55 mph) at a steady 10-15 degree throttle opening and perform multiple 4-5 upshifts.
  21. Repeat 1 until the 4-5 shift become smooth and the Alt 2C CVI become stable. There is a separate 2C volume used and learned for 4-5 shifts, 2CA. It is independent of the 2C CVI learned on 3-2 kickdowns.
Programming and Relearning — SKREEM Programming20 steps
ℹ NOTE
If the PCM and the SKREEM are replaced at the same time, program the PCM VIN into the PCM first.
ℹ 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.
ℹ NOTE
Programming the PCM/ECM or WCM 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.
ℹ 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.
△ CAUTION
Read all notes and cautions for programming procedures.
△ CAUTION
If the ECM/PCM and SKREEM/WCM are replaced at the same time, the ECM/PCM MUST be programmed before the SKREEM/WCM.
ℹ 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.
ℹ 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.
ℹ 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.
  1. If applicable first replace the PCM/ECM with the original WCM still connected to the vehicle.
  2. Using the appropriate service information program the new PCM/ECM. (This will ensure the Secret Key Transfer from the original WCM into the new PCM/ECM).
  3. Now replace and program the WCM. This will retain the Secret Key from the PCM/ECM back into the new WCM.
  4. With the scan tool, select Miscellaneous Functions, WCM/Wireless Control Module. Then select the desired procedure and follow the display on the scan tool.
  5. If the vehicle is equipped with Tire Pressure Monitoring System program the Placard Pressure Values into the WCM/SKREEM.
  6. Ensure all the customer's keys have been programmed into the new module if necessary. PROGRAMMING THE SKREEM The SKIS Secret Key is an ID code that is unique to each WCM. This code is programmed and stored in the WCM, the PCM/ECM, and each ignition key transponder chip. When the PCM/ECM or 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. ECM/SKIM/WCM PROGRAMMING When a ECM and the SKIM are replaced at the same time perform the following steps in order:
  7. Program the new SKIM
  8. Program the new ECM
  9. 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:
  10. Program the new SKIM
  11. Program the new ECM (Bosch)
  12. Replace all ignition keys and program them to the new SKIM. PROGRAMMING THE SKIM
  13. Connect a battery charger to the vehicle.
  14. Connect the StarSCAN(R).
  15. Select "ECU View".
  16. Select "WCM Wireless Control Module".
  17. Select "Miscellaneous Functions".
  18. Select WCM replaced.
  19. Enter the PIN when prompted.
  20. Verify the correct information. 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 WCM, the transponder ID code is learned by the module and the transponder acquires the unique Secret Key ID code from the WCM. To program ignition keys into the 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. If ignition key programming is unsuccessful, the scan tool will display one of the following error messages: -PROGRAMMING NOT ATTEMPTED - The scan tool attempts to read the programmed key status and there are no keys programmed into SKREEM memory. -PROGRAMMING KEY FAILED (POSSIBLE USED KEY FROM WRONG VEHICLE) - SKREEM is unable to program an ignition key transponder due to one of the following: -The ignition key transponder is ineffective. -The ignition key transponder is or has been already programmed to another vehicle. -8 KEYS ALREADY LEARNED, PROGRAMMING NOT DONE - The SKREEM transponder ID memory is full. -LEARNED KEY IN IGNITION - The ID for the ignition key transponder currently in the ignition lock cylinder is already programmed into SKREEM memory.
Component Tests and General Diagnostics14 steps
△ CAUTION
Do not probe the PCM harness connectors. Probing the PCM harness connectors will damage the PCM terminals resulting in poor terminal to pin connection. Install the PCM Pinout Box (8815A) to perform diagnosis.
ℹ NOTE
The test light should be illuminated and bright. Compare the brightness to that of a direct connection to the battery.
△ CAUTION
Do not probe the PCM harness connectors. Probing the PCM harness connectors will damage the PCM terminals resulting in poor terminal to pin connection. Install the PCM Pinout Box (8815A) to perform diagnosis.
ℹ NOTE
The test light should be illuminated and bright. Compare the brightness to that of a direct connection to the battery.
△ CAUTION
Do not probe the PCM harness connectors. Probing the PCM harness connectors will damage the PCM terminals resulting in poor terminal to pin connection. Install the PCM Pinout Box (8815A) to perform diagnosis.
ℹ NOTE
The test light should be illuminated and bright with the ignition on and not illuminated with the ignition off. Compare the brightness to that of a direct connection to the battery.
Fig. 1
Fig. 1
Fig. 2
Fig. 2
Fig. 3
Fig. 3
Fig. 4
Fig. 4
  1. Turn the ignition off.
  2. Using the wiring diagram/schematic as a guide, inspect the wiring and each connector at the PCM.
  3. Look for any chafed, pierced, pinched, or partially broken wires.
  4. Look for broken, bent, pushed out or corroded terminals. Were any problems found? Yes -Repair as necessary. -Perform the POWERTRAIN VERIFICATION TEST. Powertrain Verification Test. No -Go To 2 2. CHECKING THE PCM GROUND CIRCUITS
  5. Turn the ignition off.
  6. Using a 12 volt test light connected to 12 volts, check the PCM ground circuits.
  7. Wiggle test each circuit during the test to check for an intermittent open in the circuit. Is the test light illuminated and bright? Yes -Go To 3. No -Repair the PCM ground circuit(s) for an open circuit or high resistance. -Perform the POWERTRAIN VERIFICATION TEST. Powertrain Verification Test. 3. CHECKING THE PCM FUSED IGNITION CIRCUITS
  8. Turn the ignition on.
  9. Using a 12 volt test light connected to ground, check the PCM Fused Ignition circuits.
  10. Check each circuit with the ignition on, engine running position, and during cranking.
  11. Wiggle test each circuit during the test to check for an intermittent open in the circuit. Is the test light illuminated and bright? Yes -Go To 4. No -Repair the open or short to ground in the PCM Fused Ignition circuits. -Perform the POWERTRAIN VERIFICATION TEST. Powertrain Verification Test. 4. CHECKING THE PCM FUSED B+ CIRCUITS
  12. Turn the ignition off.
  13. Using a 12 volt test light connected to Ground, check the PCM Fused B+ circuits.
  14. Wiggle test each circuit during the test to check for an intermittent open in the circuit. Is the test light illuminated as described above? Yes -Test complete. No -Repair the open or short to ground in the PCM Fused B+ circuit(s) for as necessary. -Perform the POWERTRAIN VERIFICATION TEST. Powertrain Verification Test.