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ECM DIAGNOSTIC TROUBLE CODES IMPORTANT NOTE: Before replacing the ECM for a failed driver, control circuit or ground circuit, be sure to check T displays faults for multiple components (i.e.VSS, ECT, Batt Temp, etc.) identify and check the shared circuits for possible problems before continuing (i.e. sensor grounds or STANDARD PROCEDURE - ECM/SKIM PROGRAMMING - DIESEL NOTE: Before replacing the ECM for a failed driver, control circuit or ground circuit, be sure to check the ECM/SKIM PROGRAMMING When a ECM and the SKIM are replaced at the same time perform the following steps in order: 1. Program the new ECM. 2. Program the new SKIM. 3. Replace all ignition keys and program them to the new SKIM. ECM/SKIM PROGRAMMING When an 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. PROGRAMMING THE ECM (Bosch) 1. To program the VIN, connect the scan tool and turn the ignition on. 2. Select Engine from the main menu. The scan tool will require the VIN to be entered before continuing. 3. Select ENTER to update the VIN. The scan tool will display the updated VIN. 4. If the engine is equipped with air conditioning, the ECM A/C function must be enabled. Enable the ECM A/C function as follows: • Using the scan tool select ENGINE, MISCELLANEOUS, then ENABLE/DISABLE A/C • Push 1 to enable A/C, the scan tool screen should display A/C Activated. PROGRAMMING THE SKIM 1. Turn the ignition switch on (transmission in park/neutral). 2. Use the scan tool and select THEFT ALARM, SKIM then MISCELLANEOUS. 3. Select ECM REPLACED (DIESEL ENGINE). 4. Program the vehicle four-digit PIN into SKIM. 5. Select COUNTRY CODE and enter the correct country. NOTE: Be sure to enter the correct country code. If the incorrect country code is programmed into SKIM, 6. Select YES to update VIN (the SKIM will learn the VIN from the PCM). 7. Press ENTER to transfer the secret key (the PCM will send the secret key to the SKIM). 8. Program ignition keys to SKIM. 8E - 266 ELECTRONIC CONTROL MODULES - SERVICE INFORMATION LX |