GX 470 V8-4.7L (2UZ-FE) (2004)
Engine Control Module: Service and Repair
Control Module Programming and Relearning
Precaution
PRECAUTION
NOTE: Perform the RESET MEMORY (AT initialization) when replacing the automatic transaxle assembly, engine assembly or ECM.
HINT: Initialization can not be completed by only removing the battery.
Initialization
INITIALIZATION
Reset Memory
CAUTION: Perform the RESET MEMORY (AT initialization) when replacing the automatic transmission assy, engine assy or ECM.
NOTE: Hand-held tester only
HINT: The ECM memorizes the condition that the ECT controls the automatic transmission assy and engine assy according to those characteristics.
Therefore, when the automatic transmission assy, engine assy, or ECM has been replaced, it is necessary to reset the memory so that the ECM can
memorize the new information.
Reset procedure is as follows.
a. Turn the ignition switch off.
b. Connect the hand-held tester to the DLC3.
c. Turn the ignition switch to the ON position and push the hand-held tester main switch on.
d. Select the item "DIAGNOSIS/ENHANCED OBD II".
e. Perform the reset memory procedure from the ENGINE menu.
CAUTION: After performing the RESET MEMORY, be sure to perform the ROAD TEST described earlier.