PR25DD engine

Make sure that all of the following conditions are satisfied.

Learning will be cancelled if any of the following conditions are missed for even a moment.

• Battery voltage: More than 12.9 V (At idle)
• Engine coolant temperature: 70 - 105 deg. C (158 - 221 deg. F)
• Selector lever : P or N
• Electric load switch: OFF

  (Air conditioner, headlamp, rear window defogger)

  On vehicles equipped with daytime running light systems, set lighting switch to the 1st position to light only small lamps.

• Steering wheel: Neutral (Straight-ahead position)
• Vehicle speed: Stopped
• Transmission: Warmed-up
  • With CONSULT

    Drive vehicle until "ATF TEMP SEN" in "DATA MONITOR" mode of "CVT" system indicates less than 0.9 V.

  • Without CONSULT

    Drive vehicle for 10 minutes.

YES

GO TO 2.

NO

With CONSULT

1. Perform Accelerator Pedal Released Position Learning. Refer to Work Procedure .
2. Perform Throttle Valve Closed Position Learning. Refer to Work Procedure .
3. Start engine and warm it up to normal operating temperature.
4. Select "IDLE AIR VOL LEARN" in "WORK SUPPORT" mode of "ENGINE".
5. Touch "START" and wait 20 seconds.

Is "CMPLT" displayed on CONSULT screen?

YES

GO TO 3.

NO

GO TO 4.

Rev up the engine two or three times and make sure that idle speed and ignition timing are within the specifications. For specification, Refer to IDLE SPEED : Service Data . and Refer to IGNITION TIMING : Service Data .

Is the inspection result normal?

YES

INSPECTION END

NO

GO TO 4.

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 5.

NO

Repair or replace malfunctioning part.

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". Refer to Component Function Check .

If any of the following conditions occur after the engine has started, eliminate the cause of the incident and perform Idle Air Volume Learning all over again:

• Engine stalls.
• Erroneous idle.

INSPECTION END