Ecd System (W/ Dpf) -- Precaution |
| 1.INITIALIZATION AND REGISTRATION |
- NOTICE:
- When replacing the ECM and/or any other components in the following chart, perform the corresponding utility items.
- HINT:
- When the ECM and one or more other components are replaced at the same time, perform the following utility items by following the instructions shown on the GTS display, starting with the ECM.
| Replacement Part | Utility Item |
| ECM |
|
| Engine assembly |
|
| Crankshaft position sensor plate | Clear Crank Time Compensation Data (Click here) |
| Air fuel ratio sensor | Clear A/F Sensor Compensation data (Click here) |
| Fuel supply pump assembly | Supply Pump Initialization (Click here) |
| Front exhaust pipe assemblies (DPF catalytic converter) |
|
| Monolithic converter assemblies (CCo catalytic converter) |
|
| Injector assembly |
|
| Automatic transmission assembly, engine assembly or ECM | Automatic Transmission Initialization (Click here) |
- HINT:
- When the ECM must be replaced, before replacing the ECM, perform the "Learning Values Save" function using the GTS. Then after installing the new ECM, perform all of the initializations/registrations for the "Learning Values Write" function by following the instructions shown on the GTS display.
| 2.INJECTOR COMPENSATION CODE |
- HINT:
- Each injector assembly has different fuel injection characteristics. In order to optimize fuel injection performance, the ECM compensates for these differences by adjusting the fuel injection duration of each injector assembly according to its compensation code. Injector compensation codes are unique, 30-digit, alphanumeric values printed on the head portion of each injector assembly.
- If an incorrect injector compensation code is input into the ECM, the engine may rattle or engine idling may become rough. In addition, engine failure may occur and the life of the engine may be shortened.
When an injector assembly is replaced, the injector compensation code must be input into the ECM (Click here).
Text in Illustration *1 Injector Compensation Code *a Example When the ECM is replaced, all of the existing injector compensation codes must be input into the new ECM (Click here).
 |
| 3.CATALYST RECORD OF DPF THERMAL DETERIORATION |
- HINT:
- The ECM stores the thermal deterioration history data of the front exhaust pipe assemblies (DPF catalytic converter) and monolithic converter assemblies (CCo catalytic converter). This data is updated continuously and is then converted to an 8-digit code and is stored in the EEPROM. If the ECM determines that replacement of the front exhaust pipe assemblies (DPF catalytic converter) or monolithic converter assemblies (CCo catalytic converter) is required based on the thermal deterioration data, a DTC is stored to inform the driver.
When only the front exhaust pipe assemblies (DPF catalytic converter) are replaced.
After replacing the front exhaust pipe assemblies (DPF catalytic converter), clear the thermal deterioration data stored in the ECM (Click here).
- HINT:
- Replace the DPF catalytic converter for bank 1 and bank 2 at the same time.
When only the monolithic converter assemblies (CCo catalytic converter) are replaced.
After replacing the monolithic converter assemblies (CCo catalytic converter), clear the thermal deterioration data stored in the ECM (Click here).
When only the ECM is replaced.
After replacing the ECM, input the original thermal deterioration data stored before replacement (Click here).
- NOTICE:
- Read the thermal deterioration data stored in the ECM before replacement, and store the data in the GTS.
- If the thermal deterioration data cannot be read, be sure to replace the front exhaust pipe assemblies (DPF catalytic converter) with new ones and initialize the ECM (Click here).
After replacing both the front exhaust pipe assemblies (DPF catalytic converter) and the ECM, clear the thermal deterioration data stored in the new ECM (Click here).
- HINT:
- Clearing the thermal codes is required because initialization codes are stored in a new ECM. Failure to do this will cause a DTC to be stored.
| 4.PILOT QUANTITY LEARNING |
- HINT:
- By performing "Pilot Quantity Learning", the injection volume for each cylinder is precisely adjusted so that the engine runs smoothly. The "Pilot Quantity Learning" information is stored in the EEPROM of the ECM.
- If an incorrect pilot quantity learning value is input into the ECM, the engine may rattle or engine idling may become rough.
When an injector assembly is replaced, the injector compensation code must be input to the ECM, and then pilot quantity learning must be performed (Click here).
When the ECM is replaced, all of the existing injector pilot quantity learning values must be input into the new ECM (Click here).
| 5.ENGINE DIFFICULT TO START, ENGINE STALLING, BLACK SMOKE EMITTED, ROUGH IDLING, EXCESSIVE ENGINE VIBRATION, ENGINE KNOCKING, LACK OF POWER OR HESITATION |
Check if the customer problem is described below. If so, refer to the appropriate troubleshooting section.
Engine is difficult to start or stalling.
Black smoke is emitted.
There is rough idling or excessive engine vibrations.
There is engine knocking or rattling.
There is a lack of power or hesitation.
| 6.WHEN USING GTS |
- CAUTION:
- Observe the following items for safety reasons:
- Read the GTS's instruction books before using the GTS.
- Make sure that the GTS cable is not caught on the pedals, shift lever or steering wheel when driving with the GTS connected to the vehicle.
- When driving the vehicle for testing purposes using the GTS, two persons are required. One drives the vehicle and the other operates the GTS.