Launch X431 PAD VII: IPA calibration function solves Toyota Parking Assist Malfunction

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There's a parking assist malfunction on 2015 Toyota Alphard Vellfire dashboard after replacing parking sensor. DTC: C1AEC - front sensor communication circuit. So I'm gonna use Launch X431 PAD VII to do IPA calibration to fix the issue. Other X431 tools like X431 PRO5 may refer to the steps as well.

 

Procedure

1. Read Fault Codes

Toyota >> Set Area >> Japan

Succeeded to set area.

 

16PIN DLC(Japan) >> 2015.01-2017.12 >> OK

If communication abnormality occurs during the test, please ensure whether the vehicle is equipped with other parts. If other parts are installed, you can try to remove the parts and then perform the test.

Scanning vehicle data...

 

IPA(Intuitive Parking Assist System)/ICS(Intelligent Clearance Sonar)/CS(Clearance Sonar)

 

This ECU has the following 3 functions.

Clearance sonar: this function detects obstacles around the vehicle and informs a driver.

ICS: This function detects the distance to the target object, and regulates the miss-stepping of the acceleration pedal.

IPA: This function controls steering wheel automatically and it enables the vehicle to be parallel parked or to be backed into a garage easily.

 

OK >> Read fault code

There's a DTC: C1AEC.

 

2. Parking Assist Calibration

Special function >> Intuitive P/A detection/ steering adjustment

<Usage>

- To enable the clearance sonar by initializing the clearance sonar ECU.

- To enable related function of the clearance sonar such as the ICS by making the necessary adjustment(adjusting the detection area of the clearance sonar or memorizing the steering angle neutral position) for each replaced or removed part.

<Introduction>

This function is used to adjust the detection area of the clearance sonar and memorize the steering angle neutral position.

Press "OK".

 

This function is used to adjust the detection area of the clearance sonar and to memorize the steering angle netural position.

Refer to the repair manual for details.

Press OK to proceed.

 

Select the parts which have been replaced or removed to proceed.

 

Select "Fr sensor or Fr bumper".

Confirm the following conditions.

- Turn the engine/power switch ON(Engine OFF/ Ready OFF).

- The vehicle is stopped.

- The steering wheel is centered.

Press "OK" to proceed.

 

Now adjusting, please wait...

 

Refer to the repair manual and input the elevation angle of front center sensor. FLC sensor(-12.7~12.7): 0°

Refer to the repair manual and input the elevation angle of front center sensor: FRC sensor(-12.7~12.7): 0°

Refer to the repair manual and input the elevation angle of front corner sensor.FL sensor(-12.7~12.7): 1°

Refer to the repair manual and input the elevation angle of front corner sensor.FR sensor(-12.7~12.7): 1°

Press "Next step".

 

Now writing, please wait...

Clearance sonar detection/steering adjustment is complete.

Note:

Data will not display until the connection is reestablished.

Information will only be updated after vehicle reconnection.

 

Read fault code >> Clear DTCs

There's no DTC now.

The IPA warning message has gone.

 

Problem was fixed with X431 PAD 7 successfully!

 

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