Work Procedure
IDLE AIR VOLUME LEARNING
Work Procedure
1. START
CAUTION:
Note that the engine starts automatically when starting the Idle Air Volume Learning during engine stop control.
With CONSULT-GO TO 2.
Without CONSULT-GO TO 7.
2. PRECONDITIONING-I
With CONSULT
1.Turn ignition switch ON.
2.Select "HV BATTERY LEVEL" in "DATA MONITOR" mode of "EV/HEV".
3.Check "HV BATTERY LEVEL" data monitor item indication.
Is the "HV BATTERY LEVEL" indicating 50% or more?
YES- GO TO 3.
NO- 1.Charge the Li-ion battery.
2.GO TO 3.
3. PRECONDITIONING-II
With CONSULT
1.Select "COOLAN TEMP/S" in "DATA MONITOR" mode of "ENGINE" with CONSULT.
2.Check "COOLAN TEMP/S" data monitor item indication.
Is the "COOLAN TEMP/S" indicating a temperature between 70�C and 100�C?
YES- GO TO 4.
NO- 1.Adjust Engine coolant temperature between 70�C and 100�C.
NOTE:
When warm engine up to normal operating temperature, perform "INSPECTION MODE 5".
Description.
2.Turn ignition switch OFF.
3.GO TO 4.
4. PERFORM ACCELERATOR PEDAL RELEASED POSITION LEARNING
Perform Accelerator Pedal Released Position Learning. Work Procedure.
- GO TO 5.
5. PERFORM THROTTLE VALVE CLOSED POSITION LEARNING
Perform Throttle Valve Closed Position Learning. Work Procedure.
- GO TO 6.
6. PERFORM IDLE AIR VOLUME LEARNING
With CONSULT
1.Set the vehicle to READY.
2.Make sure that all of the following conditions are satisfied.
-Li-ion battery charging status: 50% or more
-Engine coolant temperature: 70 - 100�C (158 - 212�F)
-Battery voltage: More than 12.9 V (At idle)
-Selector lever: P or N
-Electric load switch: OFF
(Air conditioner, headlamp, rear window defogger)
-Steering wheel: Neutral (Straight-ahead position)
-Vehicle speed: Stopped
-Transmission: Warmed-up (Drive vehicle for 10 minutes.)
3.Select "IDLE AIR VOL LEARN" in "WORK SUPPORT" mode of "ENGINE" with CONSULT.
4.Touch "START".
NOTE:
The engine starts automatically.
5.Wait 20 seconds at idle.
Is "CMPLT" displayed on CONSULT screen?
YES- GO TO 12.
NO- GO TO 13.
7. PRECONDITIONING-I
Without CONSULT
1.Turn ignition switch ON.
2.Check "Assist/charge gauge" in combination meter.
Is the "Assist/charge gauge" indicating battery power 50% or more?
YES- GO TO 8.
NO- 1.Charge the Li-ion battery.
2.Turn ignition switch OFF.
3.GO TO 8.
8. PRECONDITIONING-II
Without CONSULT
1.Perform "INSPECTION MODE 5".
2.Start engine and warm it up to normal operating temperature.
3.Turn ignition switch OFF.
- GO TO 9.
9. PERFORM ACCELERATOR PEDAL RELEASED POSITION LEARNING
Perform Accelerator Pedal Released Position Learning. Work Procedure.
- GO TO 10.
10. PERFORM THROTTLE VALVE CLOSED POSITION LEARNING
Perform Throttle Valve Closed Position Learning. Work Procedure.
- GO TO 11.
11. PERFORM IDLE AIR VOLUME LEARNING
Without CONSULT
NOTE:
-It is better to count the time accurately with a clock.
-It is impossible to switch the diagnostic mode when an accelerator pedal position sensor circuit has a malfunction.
1.Make sure that all of the following conditions are satisfied.
-Li-ion battery charging status: 50% or more
-Engine coolant temperature: 70 - 100�C (158 - 212�F)
-Battery voltage: More than 12.9 V (At idle)
-Selector lever: P or N
-Electric load switch: OFF
(Air conditioner, headlamp, rear window defogger)
-Steering wheel: Neutral (Straight-ahead position)
-Vehicle speed: Stopped
-Transmission: Warmed-up (Drive vehicle for 10 minutes.)
2.Turn ignition switch OFF and wait at least 10 seconds.
3.Confirm that accelerator pedal is fully released, turn ignition switch ON and wait 3 seconds.
4.Repeat the following procedure quickly five times within 5 seconds.
-Fully depress the accelerator pedal.
-Fully release the accelerator pedal.
5.Wait 7 seconds, fully depress the accelerator pedal for approx. 20 seconds until the MIL stops blinking and illuminates.
6.Fully release the accelerator pedal within 3 seconds after the MIL illuminates.
7.Set the vehicle to READY.
8.Wait 20 seconds.
- GO TO 12.
12. CHECK IDLE SPEED AND IGNITION TIMING
1.Start engine and warm it up to normal operating temperature.
2.Let it idle for 20 seconds.
3.Rev up the engine two or three times and make sure that idle speed and ignition timing are within the specifications. [1][2]Idle Speed and [1][2]Ignition Timing.
Is the inspection result normal?
YES- INSPECTION END
NO- GO TO 13.
13. DETECT MALFUNCTIONING PART-I
Check the following
- Check that throttle valve is fully closed.
- Check PCV valve operation.
- Check that downstream of throttle valve is free from air leakage.
Is the inspection result normal?
YES- GO TO 14.
NO- Repair or replace malfunctioning part.
14. DETECT MALFUNCTIONING PART-II
Engine component parts and their installation condition are questionable. Check and eliminate the cause of the incident.
It is useful to perform "TROUBLE DIAGNOSIS - SPECIFICATION VALUE". Specification Value.
If any of the following conditions occur after the engine has started, eliminate the cause of the incident and perform Idle Air Volume Learning again:
- Engine stalls.
- Erroneous idle.
- INSPECTION END