INITIALIZATION PROCEDURE FOR DIESEL THROTTLE BODY ASSEMBLY, ELECTRIC EGR CONTROL VALVE ASSEMBLY AND TURBOCHARGER SUB-ASSEMBLY
Tech Tips
When the diesel throttle body assembly, electric EGR control valve assembly or turbocharger sub-assembly is replaced, perform initialization
Turn the ignition switch to ON.
Note
Do not start the engine.
Turn the ignition switch off and wait for 30 seconds or more.
Turn the ignition switch to ON and wait for 10 seconds or more.
CATALYST RECORD OF DPF THERMAL DETERIORATION CLEAR FUNCTION
Tech Tips
When the DPF catalyst is replaced, the catalyst record of DPF thermal deterioration stored in the ECM must be cleared.
Connect the GTS to the DLC3.
Turn the ignition switch to ON.
Turn the GTS on.
Enter the menu options in this order: Powertrain / Engine and ECT / Utility / Catalyst Record Clear.
Press "Next".
Press "Exit".
FUEL SUPPLY PUMP INITIALIZATION PROCEDURE
Tech Tips
After replacing the fuel supply pump assembly and/or ECM:
If the engine is defective or stalls immediately after startup, the learned values of the ECM must be initialized. The engine can be initialized through the GTS or by connecting DLC3 terminals.
If the engine starts normally, initialization is not necessary. Perform the steps labeled procedure "A" and procedure "B" only.
Connect the GTS to the DLC3.
Turn the ignition switch to ON.
Note
Do not start the engine.
Turn the GTS on.
Enter the following menus: Powertrain / Engine and ECT / Utility / Supply Pump Initialization.
Press "Next".
Press "Next".
Press "Exit".
Start the engine to check if the initialization is complete. If the engine cannot be started, repeat the initialization procedures from the beginning (Procedure "A").
Idle the engine for at least 1 minute under the following conditions: (Procedure "B")
The engine coolant temperature is 60°C (140°F) or higher.
The fuel temperature is 20°C (68°F) or higher.
Note
Do not race the engine immediately after starting the engine. After warming up the engine, racing the engine is acceptable.
Tech Tips
The engine coolant temperature can be estimated by touching the outlet hose.
The fuel temperature can be estimated by using the ambient temperature as a substitute.
If the engine coolant temperature is difficult to estimate, use the GTS and enter the following menus: Powertrain / Engine and ECT / Data List / Coolant Temp.
Initialization is complete.
CRANK TIME COMPENSATION RESET FUNCTION
This procedure uses the GTS to perform "Crank Time Compensation Reset".
When replacing the No. 1 crankshaft position sensor plate (engine assembly), perform "Crank Time Compensation Reset".
Tech Tips
If an error occurs during compensation reset, check the vehicle condition, and then perform compensation reset again.
A communication malfunction may occur if there is a problem with the ECM, a wire harness or the connection to the DLC3. If the wire harnesses and the connection to the DLC3 are inspected and found to be normal, the ECM may be malfunctioning.
Connect the GTS to the DLC3.
Turn the ignition switch to ON.
Note
Do not start the engine.
Turn the GTS on.
Enter the following menus: Powertrain / Engine and ECT / Utility / Crank Time Compensation Reset.
When the first screen is displayed, check the vehicle condition and push "Next".
When the screen indicating reset completion is displayed, push "Exit".
A/F SENSOR COMPENSATION RESET FUNCTION
This procedure uses the GTS to perform "A/F Sensor Compensation Reset".
When replacing the A/F sensor, replace the sensor and then perform "A/F Sensor Compensation Reset".
Tech Tips
If an error occurs during compensation reset, check the vehicle condition, and then perform compensation reset again.
A communication malfunction may occur if there is a problem with the ECM, a wire harness or the connection to the DLC3. If the wire harnesses and the connection to the DLC3 are inspected and found to be normal, the ECM may be malfunctioning.
Connect the GTS to the DLC3.
Turn the ignition switch to ON.
Note
Do not start the engine.
Turn the GTS on.
Enter the following menus: Powertrain / Engine and ECT / Utility / A/F Sensor Compensation Reset.
When the first screen is displayed, check the vehicle condition and push "Next".
When the screen indicating reset completion is displayed, push "Exit".