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Home >> Toyota >> 2010 >> Prius L4-1.8L (2ZR-FXE) Hybrid >> Repair and Diagnosis >> Accessories and Optional Equipment >> Collision Avoidance and Parking Assist Systems >> Testing and Inspection >> Initial Inspection and Diagnostic Overview >> Advanced Parking Guidance System >> Diagnosis System

Diagnosis System





PARK ASSIST / MONITORING: ADVANCED PARKING GUIDANCE SYSTEM: DIAGNOSIS SYSTEM

1. ADVANCED PARKING GUIDANCE OR DIAGNOSIS SYSTEM

(a) For advanced parking guidance system diagnosis, signals received by the parking assist ECU can be checked and the advanced parking guidance system can be calibrated, adjusted and checked using the navigation receiver assembly.

NOTICE:
Depending on the parts that are replaced or operations that are performed during vehicle inspection or maintenance, calibration of other systems as well as the advanced parking guidance system may be needed Calibration.

HINT
The displayed screens and items may differ depending on vehicle specifications.

2. DIAGNOSIS SCREEN TRANSITION (during parking assist ECU initialization)













3. DIAGNOSIS SCREEN TRANSITION (after parking assist ECU initialization)













4. DIAGNOSTIC MODE

(a) Start diagnostic mode Reading and Clearing Diagnostic Trouble Codes.

(b) Failure diagnosis.

(c) System check (check using system check mode screen).

(d) Finish diagnostic mode.

5. SIGNAL CHECK (parking assist ECU input signal)

(a) Start diagnostic mode Reading and Clearing Diagnostic Trouble Codes.

(1) Select "Function Check/Setting" on the Service Menu screen to display the Function Check/Setting screen.





(2) Select "Camera Setting" on the Function Check/Setting screen.





HINT
After "Camera Setting" is selected, the screen transitions differ depending on whether initialization of the parking assist ECU was performed after parking assist ECU replacement.





(3) When the screen changes to the MODE SETTING screen, select "BACK CAMERA SETTING" to display the SIGNAL CHECK screen.

HINT
To select a grayed out item, select and hold the item for 2 seconds or more.





(b) SIGNAL CHECK





(1) On the SIGNAL CHECK screen, the following contents are possible:

* Inspect the state of signals sent to the parking assist ECU.

* Confirm the state of the height control sensor vehicle height difference setting.

* Adjust the parking position for parallel parking mode.





HINT
* When "CHK" (red) is displayed, perform inspections based on the result of the following inspections.
* If performing the adjustment after proceeding to the next screen, confirm that all items display "OK" (blue) before selecting "NEXT".
* Select the following buttons changes to each adjustment screen.






(c) CAN inspection

HINT
If "CHK" (red) is displayed for "CAN", check for DTCs and perform troubleshooting based on the output DTCs Advanced Parking Guidance System.

(d) IPA SW inspection

(1) Check that "OK" (blue) is displayed for "IPA SW" and select "OK".

(2) Check that "OK" (blue) changes to "CHK" (red). Press the parking assist pre support switch and check that "CHK" (red) returns to "OK" (blue).

HINT
If "CHK" (red) remains displayed or the "IPA SW" inspection result is not normal, perform troubleshooting according to Problem Symptoms Table ("CHK" message(s) are displayed on the SIGNAL CHECK screen) "CHK" Message(s) Are Displayed On the SIGNAL CHECK Screen.

(e) BCTY inspection

HINT
If "CHK" (red) is displayed for "BCTY", check for DTCs and perform troubleshooting based on the output DTCs Advanced Parking Guidance System.

(f) EPS TYPE inspection

(1) Confirm the vehicle specification and check that the EPS brush information shown under "EPS TYPE" matches the vehicle specification.





NOTICE:
* If the EPS brush information shown under "EPS TYPE" does not match the vehicle specification, change the EPS brush specification to one that matches the vehicle specification.
* The EPS brush specification can be changed on the INDIVIDUAL SETTING screen which is displayed after "NEXT" is selected.
* When the EPS brush specification is modified, steering angle setting is required Initialization.
(g) HT SENS inspection

HINT
If "CHK" (red) is displayed for "HT SENS", check for DTCs and perform troubleshooting based on the output DTCs Advanced Parking Guidance System.

(h) HT INIT inspection

HINT
If "CHK" (red) is displayed for "HT INIT", perform troubleshooting according to the table below.





(i) STR inspection

HINT
If "CHK" (red) is displayed for "STR", check for DTCs and perform troubleshooting based on the output DTCs Advanced Parking Guidance System.

(j) HANDLE inspection

HINT
If "CHK" (red) is displayed for "HANDLE", check for DTCs and perform troubleshooting based on the output DTCs Advanced Parking Guidance System.

(k) Finish diagnostic mode Reading and Clearing Diagnostic Trouble Codes.

6. CALIBRATION WHEN SERVICING VEHICLE

NOTICE:
Depending on the parts that are replaced or operations that are performed during vehicle inspection or maintenance, calibration of other systems as well as the advanced parking guidance system may be needed Calibration.

7. STEERING ANGLE SETTING (after parking assist ECU is initialized)

HINT
If the vehicle width extension lines and predicted path lines are not aligned when the steering wheel is centered, or if the predicted path line does not move before the steering wheel is fully turned to either the left or right, adjust the steering angle settings.

(a) Center the steering wheel and stop the vehicle.

(b) Start diagnostic mode.

NOTICE:
Steering angle setting must be carried out with the hybrid system started. Apply the parking brake, depress the brake pedal, push the P position switch, and ensure that the vehicle is not moving.

(1) Select "Function Check/Setting" on the Service Menu screen.





(2) Select "Camera Setting" on the Function Check/Setting screen.





(3) Select "STEERING ANGLE SETTING" on the MODE SETTING screen.





HINT
To select a grayed out item, select and hold the item for 2 seconds or more.

(4) Select "NEXT" on the SIGNAL CHECK screen.





NOTICE:
* When "CHK" (red) is displayed for any items on the SIGNAL CHECK screen, selecting "NEXT" will not change the screen to the STEERING ANGLE SETTING screen.
* When "CHK" is displayed for any items on the SIGNAL CHECK screen, perform inspections using the SIGNAL CHECK screen.
(c) Individual setting





(1) Confirm the vehicle specification and select the EPS brush specification.





HINT
* Selected EPS brush specification is indicated in blue.
* EPS brush refers to the type of motor used for the EPS system (with brushes or brushless).
NOTICE:
If the selected EPS brush specification does not match the vehicle specification, select the one that matches the vehicle specification.

(2) Select "NEXT" on the INDIVIDUAL SETTING screen.

HINT
* The INDIVIDUAL SETTING screen will not be displayed when "BACK" is selected after switching to the STEERING ANGLE SETTING screen.
* To display the INDIVIDUAL SETTING screen again, go back to the Function Check/Setting screen, select "Camera Setting" and repeat the steps.
(d) Steering angle setting





(1) Check that the steering wheel is centered (approximately +/- 5 degrees or less) and select "STEERING CENTER MEMORIZE".

(2) After the centered steering position is memorized, turn the steering wheel to the left and then to the right full lock positions and select "MAX STEERING ANGLE MEMORIZE".

HINT
It is also possible to start by initially turning the steering wheel to the right side.

(3) Select "MAX STEERING ANGLE MEMORIZE" to store the steering angle adjustment value and change the screen to the MODE SETTING screen.

HINT
* When "MAX STEERING ANGLE MEMORIZE" is selected, a beep will sound to confirm that the steering angle adjustment values have been stored.
* The adjustment values will not be stored unless "MAX STEERING ANGLE MEMORIZE" is selected.
* Until a beep finishes sounding, the adjustment values are not stored.
* When "BACK" is selected, the screen changes to SIGNAL CHECK without storing the set values.
* Even if "OK" is selected, the adjustment values will not be stored.
* If the steering angle settings have not been adjusted, selecting "MAX STEERING ANGLE MEMORIZE" will not cause the adjustment values to be stored.
* Even if no DTCs are detected, selecting "MAX STEERING ANGLE MEMORIZE" may not cause the adjustment value to be stored if the steering sensor is malfunctioning.
* If selecting "MAX STEERING ANGLE MEMORIZE" does not cause the adjustment value to be stored after adjusting the steering angle, replace the spiral with sensor cable sub-assembly Removal.
(e) Finish diagnostic mode.

(f) Confirm steering angle adjustment.

HINT
If the steering angle has been adjusted, confirm the steering angle adjustment on the advanced parking guidance screen after finishing diagnosis mode.

(1) Check on the advanced parking guidance screen that the predicted path line moves until the steering wheel is fully turned to either the left or right.

HINT
If the predicted path line stops moving before the steering wheel is fully turned to either the left or right, the steering angle adjustment values have not been stored correctly. In this case, perform "STEERING CENTER MEMORIZE" and "MAX STEERING ANGLE MEMORIZE" again.

8. PARKING POSITION HORIZONTAL ADJUSTMENT FOR PARALLEL PARKING MODE

(a) Start diagnostic mode.

NOTICE:
Parallel parking offset must be carried out with the hybrid system started. Apply the parking brake, depress the brake pedal, push the P position switch, and ensure that the vehicle is not moving.

(1) Select "Function Check/Setting" on the Service Menu screen.





(2) Select "Camera Setting" on the Function Check/Setting screen.





(3) Select "BACK CAMERA SETTING" or "STEERING ANGLE SETTING" on the MODE SETTING screen.





HINT
To select a grayed out item, select and hold the item for 2 seconds or more.

(4) Select "PARALLEL OFFSET" on the SIGNAL CHECK screen.





(b) PARALLEL PARKING OFFSET





HINT
The PARALLEL PARKING OFFSET screen allows the parking position to be offset when the actual parking position deviates to the right or left of the set target parking position during parallel parking mode.

(1) Press "UP" or "DOWN" to adjust the parallel parking position horizontal offset amount.





HINT
* A positive value is indicated in green and a negative value is indicated in red.
* The + direction indicates an offset toward the edge of the road, the - direction indicates an offset toward the road surface.
* When a value is shown as "10 CM" in red, it means -10 cm (the parking position is offset 10 cm towards the center of the road).
* Available setting range: +20 cm to -40 cm (can be adjusted in 1 cm increments)
(2) When "OK" is selected, the screen switches to the signal connection screen and a set value is stored.

* When "OK" is selected, the set value is stored after a "beep" sounds for confirmation.

* The memory is not updated until "OK" is selected.

* Until a beep finishes sounding, the adjustment values are not stored.

* When "BACK" is selected, the screen switches to the signal connection screen without storing a value (values entered are not stored).

(c) Finish diagnostic mode.
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