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INTELLIGENT PARKING ASSIST SYSTEM > "CHK" message(s) are displayed on the SIGNAL CHECK screen.

for Preparation Click here


DESCRIPTION

On the SIGNAL CHECK screen, it is possible to check if the state of signals sent to the parking assist ECU is normal (Click here).

HINT:
  1. On the SIGNAL CHECK screen, "OK" (blue) is displayed for items with a normal inspection result or input state.
  2. On the SIGNAL CHECK screen, "CHK" (red) is displayed for items with an abnormal inspection result or input state.
  3. Displayed items may differ depending on vehicle specifications.


Item
Signal Input Method
Detail
DTC Output when Abnormal Result is Displayed
Signal Receiver
CAN
CAN communication
CAN communication condition
DTC is output
-
IPA SW
Vehicle wire harness
Parking assist pre support switch assembly signal input
DTC is not output
Parking assist pre support switch assembly
EPS
-
Brush information for EPS currently selected at individual setting screen
DTC is not output
-
HT SENS
Vehicle wire harness
Height control sensor signal input
DTC is output
Rear height control sensor sub-assembly RH
HT INIT
-
Height control sensor vehicle height difference setting status
DTC is output
-
HANDLE
CAN communication
CAN communication condition
DTC is output
-
DEST
CAN communication
CAN communication condition
DTC is output
-

WIRING DIAGRAM


E236873E02


INSPECTION PROCEDURE

NOTICE:
  1. When the "System initializing" message is displayed on the navigation ECU sub-assembly after the auxiliary battery cable has been disconnected, correct the steering angle neutral point (Click here).
  2. 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 intelligent parking assist system may be needed (Click here).

1.CHECK DISPLAY CHECK MODE


    E236868

  1. Check which items display "CHK" (red) on the SIGNAL CHECK screen.

    Result:
    Result
    		Proceed to
    "IPA SW" displays "CHK" (red).
    		A
    "HT INIT" displays "CHK" (red).
    		B
    Both "HT SENS" and "HT INIT" display "CHK" (red).
    		C
    Any of "CAN", "HANDLE", and "DEST" displays "CHK" (red).
    		C
    "EPS" displays "CHK" (red).
    		D



B
ADJUST HEIGHT CONTROL SENSOR VEHICLE HEIGHT DIFFERENCE SETTING (Click here)

C
CHECK DTC OUTPUT (Click here)

D
SET EPS BRUSH TYPE (Click here)
A


2.CHECK HARNESS AND CONNECTOR (PARKING ASSIST ECU - PARKING ASSIST PRE SUPPORT SWITCH ASSEMBLY)

  1. Disconnect the L151 connector from the parking assist ECU.

  1. Disconnect the L56 connector from the parking assist pre support switch assembly.

  1. Measure the resistance according to the value(s) in the table below.

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    L151-26 (ISSW) - L56-6 (IG)
    		Always
    		Below 1 Ω



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


3.INSPECT PARKING ASSIST PRE SUPPORT SWITCH ASSEMBLY

  1. Remove the parking assist pre support switch assembly (Click here).



    E228119E01

  1. Measure the resistance according to the value(s) in the table below.

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    3 (E) - 6 (IG)
    		Parking assist pre support switch assembly pushed
    		Below 1 Ω
    Parking assist pre support switch assembly not pushed
    		10 kΩ or higher

    Text in Illustration 
    *a
    		Component without harness connected
    (Parking Assist Pre Support Switch Assembly)



NG
REPLACE PARKING ASSIST PRE SUPPORT SWITCH ASSEMBLY (Click here)
OK

REPLACE PARKING ASSIST ECU (Click here)