Inspection After Repair
Perform learning value reset and idle learning after replacing or servicing parts related to engine operation. Details on procedures required are indicated by an asterisk and a number, and are explained in detail following the table.
Part Replaced | Engine Operation | Learning Value Reset*1 | Idle Learning*2 |
---|---|---|---|
|
- | ○ | ○ |
|
- | ○ | ○ |
Engine assembly | - | ○ | ○ |
|
Confirm the following: Perform learning value reset and idle learning when one or more of the following conditions is met.
|
○ | ○ |
The items in the list above do not apply. | - | - | |
Knock sensor*4 | - | - | - |
○: Necessary.
-: Unnecessary.
Note
Engine learned values cannot be reset by disconnecting the battery negative (-) terminal or removing the EFI MAIN and ETCS fuses.
*1: Learning Value Reset
Connect the GTS to the DLC3.
Turn the engine switch on (IG).
Turn the GTS on.
Enter the following menus: Powertrain / Engine / Utility / Learning Value Reset.
Confirm the following conditions as instructed on the screen.
- Engine switch on (IG)
- Engine stopped
- Battery voltage is higher than 9 V
After confirming, select "Next" and initialize the learned value.
Tech Tips
If a message indicating learned value initialization failure is displayed on the screen, confirm the execution conditions, and perform Learning Value Reset again.
After the completion of learned value initialization, confirm the air fuel ratio learned values (A/F Learn Value Idle #1, A/F Learn Value Low #1, A/F Learn Value Mid1 #1, A/F Learn Value Mid2 #1, A/F Learn Value High #1, A/F Learn Value Idle #2, A/F Learn Value Low #2, A/F Learn Value Mid1 #2, A/F Learn Value Mid2 #2, A/F Learn Value High #2, A/F Learn Val Low #1 (Dual), A/F Learn Val Low #2 (Dual), A/F Learn Val MID1 #1 (Dual), A/F Learn Val MID1 #2 (Dual), A/F Learn Val MID2 #1 (Dual), A/F Learn Val MID2 #2 (Dual), A/F Learn Val High #1 (Dual) or A/F Learn Val High #2 (Dual)) in the Data List.
Result |
---|
If 0 is displayed for all the air fuel ratio learned values, initialization has completed correctly. |
If a value other than 0 is displayed for one of the air fuel ratio learned values, perform initialization again. After initialization, confirm the air fuel ratio learned values. If a value other than 0 is displayed, replace the ECM. |
*2: Idle Learning
Turn the engine switch off and wait for at least 30 seconds.
Start the engine and warm it up until the engine coolant temperature is 80°C (176°F) or higher.
Tech Tips
Learning starts when the engine coolant temperature is 80°C (176°F) or higher.
After the engine is warmed up, allow it to idle for 5 minutes with the air conditioning and all accessories off.
Confirm that the idle speed is within the specified range.
Standard | ||
---|---|---|
|
Tech Tips
Be sure to perform this step with all accessories off.
Make sure that the shift lever is in N.
Make sure that the electric cooling fan is off.
*3: Perform memory reset and idle learning after replacing the throttle body with motor assembly or cleaning deposits from the throttle body with motor assembly.
After that, check the idle speed. If the value is out of the specified range, perform the procedure below.
Tech Tips
History information for driving and stopping is necessary to update idle learning.
*1 | 10 km/h (6.25 mph) |
*2 | Idling |
*3 | Engine Switch on (IG) |
*4 | 20 seconds or more |
CAUTION:
When performing the confirmation driving pattern, obey all speed limits and traffic laws.
Warm up the engine (engine coolant temperature is 80°C (176°F) or higher, air conditioning and all accessories are off) [A].
Drive the vehicle at 10 km/h (6.25 mph) or more [B].
Idle the engine for 20 seconds or more [C].
Repeat steps [B] and [C], and check that the idle speed is within the specified range [D].
Standard | ||
---|---|---|
|
Tech Tips
Be sure to perform this step with all accessories off.
Make sure that the shift lever is in N.
Make sure that the electric cooling fan is off.
If the idle speed is still out of the specified range, repeat steps [B] and [C] until the idle speed is within the specified range [E].
*4: Drive the vehicle for a short while after replacing the knock sensor, and check if knocking occurs. If knocking occurs, drive the vehicle until knocking stops.