If the valve is replaced, the stored settings (RZ002 "Adaptive EGR correction parameters") must be deleted so that the strategy can use the adjustment offset of the new valve.
Data related to this strategy is grouped into the Toxicity Reduction/BDD subfunction.
ET272: PROGRAMMING THE FIRST OFFSET OF THE EGR VALVE CONTROL - completed or not completed.
PR128: EGR VALVE ADJUSTMENT OFFSET FIRST = 0.75v < x < 1.5 in (manufacturing variation).
PR129: EGR VALVE LAST OFFSET > or = PR128.
PR051: EGR VALVE POSITION MONITORING (very close to PR 129 when the valve is closed).
Parameters PR128 and PR129 must be cleared from the memory each time the EGR valve is replaced.
Procedure to follow after replacing the EGR valve
The original can be found on the website [www.Renaultbook.ru]
Select the "DELETE" menu. Enter the RZ002 command "SROG adaptive correction parameters".
Note: At the end of the command execution, the "Toxicity Reduction/OBD" subfunction displays: ET272: Not executed:
- PR 128 and PR 129 = 0.00 V;
- PR051 = 0.75 V < x < 1.5 V.
After executing the command, turn off the ignition. Wait for the end of the ECU self-powering phase.
The parameter values will be updated automatically the next time the ignition is turned on.
Note: After performing reinitialization, the Emission Control System/OSD subfunction displays:
- ET272: completed:
- 0,75 B < PR128 = PR129 = PR051 < 1.5 V.
Replacing injectors
Note: IMA code (individual correction of injector performance) is a calibration performed at the factory for each injector in order to precisely adjust its performance.
These adjustment values are stamped on the bakelite body of each injector as a 6-digit alphanumeric code and are written into the memory of the ECU, which then controls each injector taking into account the spread of performance between them.
After replacing one or more injectors, enter the IMA codes of the new injectors. The system can be reprogrammed via the diagnostic socket using the RENAULT CUP diagnostic tool.
To do this, you should read the "1MA" codes stamped on the injector bodies and enter them into the ECU using the SC002 command "Enter injector codes", then follow the instructions issued by the diagnostic device.
Attention! After executing the command, turn off the ignition and exit the diagnostic mode.
Wait until the electronic engine immobilizer system warning light starts flashing (a few seconds) and turn on the ignition.
Enter diagnostic mode again.
Select the "ECU Identification" function on the main screen.
Make sure that the codes entered into the ECU correspond to the codes indicated on the injector bodies.
If the codes do not match, repeat the procedure using command SC002 "Enter injector codes".
After this, check for faults in the system and delete any possible stored faults from the memory.
If there are no 8 ECU faults, the operation is considered complete.
If there are any faults, handle the faults that are present.