RM38T0EC _56 Audio / Visual / Telematics _111969 PARK ASSIST / MONITORING _0514279 TOYOTA PARKING ASSIST-SENSOR SYSTEM J

PARK ASSIST / MONITORING  TOYOTA PARKING ASSIST-SENSOR SYSTEM  Sensor Frozen Indication (Dirty or Frozen)  


DESCRIPTION

When the ultrasonic sensor is dirty or frozen, "Parking Assist Unavailable Please Clean Parking Assist Sensor" is displayed on the multi-information display in the combination meter assembly.

PROCEDURE

1.CHECK FOR DTC
a.

Clear the DTCs.

Body Electrical > Clearance Warning > Clear DTCs
50002 438

b.

Check for DTCs.

Body Electrical > Clearance Warning > Trouble Codes
50001 438

Result:
Result Proceed to
DTCs are not output A
DTC is output B



A

2.READ VALUE USING GTS

B

GO TO DIAGNOSTIC TROUBLE CODE CHART

Click hereAudio / Visual / Telematics>PARK ASSIST / MONITORING>TOYOTA PARKING ASSIST-SENSOR SYSTEM>DIAGNOSTIC TROUBLE CODE CHART


2.READ VALUE USING GTS
a.

According to the display on the GTS, read the Data List.

Body Electrical > Clearance Warning > Data List
Tester Display Measurement Item Range Normal Condition Diagnostic Note
Ultrasonic Sensor (Front Right Corner) Temporarily Unavailable - Circuit Open Open circuit status of the ultrasonic sensor No or Yes NO: No sensor open circuit
Yes: Sensor open circuit 		RoB X20C6 is output if YES
Ultrasonic Sensor (Front Right Corner) Temporarily Unavailable - Freeze/Dirt Frozen/dirty status of the ultrasonic sensor No or Yes NO: Sensor not frozen/dirty
Yes: Sensor frozen/dirty 		RoB X20C6 is output if YES
Ultrasonic Sensor (Front Right Corner) Temporarily Unavailable - Foreign Material Fixing Foreign material fixing status of the ultrasonic sensor No or Yes NO: Foreign matter not stuck on sensor
Yes: Foreign matter stuck on sensor 		RoB X20C6 is output if YES
Ultrasonic Sensor (Front Right Corner) Temporarily Unavailable - Parameter Malfunction Parameter malfunction status of the ultrasonic sensor No or Yes NO: No sensor parameter malfunction
Yes: Sensor parameter malfunction 		RoB X20C6 is output if YES
Ultrasonic Sensor (Front Right Corner) Temporarily Unavailable - Flowing Water Continuously Continuous flowing water status of the ultrasonic sensor No or Yes NO: No sensor continuous flowing water
Yes: Sensor continuous flowing water 		RoB X20C6 is output if YES
Ultrasonic Sensor (Front Left Corner) Temporarily Unavailable - Circuit Open Open circuit status of the ultrasonic sensor No or Yes NO: No sensor open circuit
Yes: Sensor open circuit 		RoB X20C7 is output if YES
Ultrasonic Sensor (Front Left Corner) Temporarily Unavailable - Freeze/Dirt Frozen/dirty status of the ultrasonic sensor No or Yes NO: Sensor not frozen/dirty
Yes: Sensor frozen/dirty 		RoB X20C7 is output if YES
Ultrasonic Sensor (Front Left Corner) Temporarily Unavailable - Foreign Material Fixing Foreign material fixing status of the ultrasonic sensor No or Yes NO: Foreign matter not stuck on sensor
Yes: Foreign matter stuck on sensor 		RoB X20C7 is output if YES
Ultrasonic Sensor (Front Left Corner) Temporarily Unavailable - Parameter Malfunction Parameter malfunction status of the ultrasonic sensor No or Yes NO: No sensor parameter malfunction
Yes: Sensor parameter malfunction 		RoB X20C7 is output if YES
Ultrasonic Sensor (Front Left Corner) Temporarily Unavailable - Flowing Water Continuously Continuous flowing water status of the ultrasonic sensor No or Yes NO: No sensor continuous flowing water
Yes: Sensor continuous flowing water 		RoB X20C7 is output if YES
Ultrasonic Sensor (Rear Right Corner) Temporarily Unavailable - Circuit Open Open circuit status of the ultrasonic sensor No or Yes NO: No sensor open circuit
Yes: Sensor open circuit 		RoB X20CA is output if YES
Ultrasonic Sensor (Rear Right Corner) Temporarily Unavailable - Freeze/Dirt Frozen/dirty status of the ultrasonic sensor No or Yes NO: Sensor not frozen/dirty
Yes: Sensor frozen/dirty 		RoB X20CA is output if YES
Ultrasonic Sensor (Rear Right Corner) Temporarily Unavailable - Foreign Material Fixing Foreign material fixing status of the ultrasonic sensor No or Yes NO: Foreign matter not stuck on sensor
Yes: Foreign matter stuck on sensor 		RoB X20CA is output if YES
Ultrasonic Sensor (Rear Right Corner) Temporarily Unavailable - Foreign Material Fixing (Curl Up) Foreign material fixing (curl up) status of the ultrasonic sensor No or Yes NO: Foreign matter (curl up) not stuck on sensor
Yes: Foreign matter (curl up) stuck on sensor 		RoB X20CA is output if YES
Ultrasonic Sensor (Rear Right Corner) Temporarily Unavailable - Parameter Malfunction Parameter malfunction status of the ultrasonic sensor No or Yes NO: No sensor parameter malfunction
Yes: Sensor parameter malfunction 		RoB X20CA is output if YES
Ultrasonic Sensor (Rear Right Corner) Temporarily Unavailable - Flowing Water Continuously Continuous flowing water status of the ultrasonic sensor No or Yes NO: No sensor continuous flowing water
Yes: Sensor continuous flowing water 		RoB X20CA is output if YES
Ultrasonic Sensor (Rear Left Corner) Temporarily Unavailable - Circuit Open Open circuit status of the ultrasonic sensor No or Yes NO: No sensor open circuit
Yes: Sensor open circuit 		RoB X20CB is output if YES
Ultrasonic Sensor (Rear Left Corner) Temporarily Unavailable - Freeze/Dirt Frozen/dirty status of the ultrasonic sensor No or Yes NO: Sensor not frozen/dirty
Yes: Sensor frozen/dirty 		RoB X20CB is output if YES
Ultrasonic Sensor (Rear Left Corner) Temporarily Unavailable - Foreign Material Fixing Foreign material fixing status of the ultrasonic sensor No or Yes NO: Foreign matter not stuck on sensor
Yes: Foreign matter stuck on sensor 		RoB X20CB is output if YES
Ultrasonic Sensor (Rear Left Corner) Temporarily Unavailable - Foreign Material Fixing (Curl Up) Foreign material fixing (curl up) status of the ultrasonic sensor No or Yes NO: Foreign matter (curl up) not stuck on sensor
Yes: Foreign matter (curl up) stuck on sensor 		RoB X20CB is output if YES
Ultrasonic Sensor (Rear Left Corner) Temporarily Unavailable - Parameter Malfunction Parameter malfunction status of the ultrasonic sensor No or Yes NO: No sensor parameter malfunction
Yes: Sensor parameter malfunction 		RoB X20CB is output if YES
Ultrasonic Sensor (Rear Left Corner) Temporarily Unavailable - Flowing Water Continuously Continuous flowing water status of the ultrasonic sensor No or Yes NO: No sensor continuous flowing water
Yes: Sensor continuous flowing water 		RoB X20CB is output if YES
Body Electrical > Clearance Warning > Data List
Tester Display
Ultrasonic Sensor (Front Right Corner) Temporarily Unavailable - Circuit Open
Ultrasonic Sensor (Front Right Corner) Temporarily Unavailable - Freeze/Dirt
Ultrasonic Sensor (Front Right Corner) Temporarily Unavailable - Foreign Material Fixing
Ultrasonic Sensor (Front Right Corner) Temporarily Unavailable - Parameter Malfunction
Ultrasonic Sensor (Front Right Corner) Temporarily Unavailable - Flowing Water Continuously
Ultrasonic Sensor (Front Left Corner) Temporarily Unavailable - Circuit Open
Ultrasonic Sensor (Front Left Corner) Temporarily Unavailable - Freeze/Dirt
Ultrasonic Sensor (Front Left Corner) Temporarily Unavailable - Foreign Material Fixing
Ultrasonic Sensor (Front Left Corner) Temporarily Unavailable - Parameter Malfunction
Ultrasonic Sensor (Front Left Corner) Temporarily Unavailable - Flowing Water Continuously
Ultrasonic Sensor (Rear Right Corner) Temporarily Unavailable - Circuit Open
Ultrasonic Sensor (Rear Right Corner) Temporarily Unavailable - Freeze/Dirt
Ultrasonic Sensor (Rear Right Corner) Temporarily Unavailable - Foreign Material Fixing
Ultrasonic Sensor (Rear Right Corner) Temporarily Unavailable - Foreign Material Fixing (Curl Up)
Ultrasonic Sensor (Rear Right Corner) Temporarily Unavailable - Parameter Malfunction
Ultrasonic Sensor (Rear Right Corner) Temporarily Unavailable - Flowing Water Continuously
Ultrasonic Sensor (Rear Left Corner) Temporarily Unavailable - Circuit Open
Ultrasonic Sensor (Rear Left Corner) Temporarily Unavailable - Freeze/Dirt
Ultrasonic Sensor (Rear Left Corner) Temporarily Unavailable - Foreign Material Fixing
Ultrasonic Sensor (Rear Left Corner) Temporarily Unavailable - Foreign Material Fixing (Curl Up)
Ultrasonic Sensor (Rear Left Corner) Temporarily Unavailable - Parameter Malfunction
Ultrasonic Sensor (Rear Left Corner) Temporarily Unavailable - Flowing Water Continuously
50003 438 116,117,118,120,121,122,123,124,126,127,140,141,142,143,144,145,146,147,148,149,150,151

Result:
Result Proceed to
Sensor frozen history displays "YES" A
Sensor frozen history displays "NO" B



A

3.CLEAN ULTRASONIC SENSORS

B

4.CLEAR DTC
3.CLEAN ULTRASONIC SENSORS
a.

Clean the ultrasonic sensor from dirty or frozen.


Result:
Proceed to
NEXT



NEXT

4.CLEAR DTC
4.CLEAR DTC
a.

Clear the DTCs.

Body Electrical > Clearance Warning > Clear DTCs
50002 438

Result:
Proceed to
NEXT



NEXT

5.READ VALUE USING GTS
5.READ VALUE USING GTS
a.

According to the display on the GTS, read the Data List.

Body Electrical > Clearance Warning > Data List
Tester Display Measurement Item Range Normal Condition Diagnostic Note
Ultrasonic Sensor (Front Right Corner) Temporarily Unavailable - Circuit Open Open circuit status of the ultrasonic sensor No or Yes NO: No sensor open circuit
Yes: Sensor open circuit 		RoB X20C6 is output if YES
Ultrasonic Sensor (Front Right Corner) Temporarily Unavailable - Freeze/Dirt Frozen/dirty status of the ultrasonic sensor No or Yes NO: Sensor not frozen/dirty
Yes: Sensor frozen/dirty 		RoB X20C6 is output if YES
Ultrasonic Sensor (Front Right Corner) Temporarily Unavailable - Foreign Material Fixing Foreign material fixing status of the ultrasonic sensor No or Yes NO: Foreign matter not stuck on sensor
Yes: Foreign matter stuck on sensor 		RoB X20C6 is output if YES
Ultrasonic Sensor (Front Right Corner) Temporarily Unavailable - Parameter Malfunction Parameter malfunction status of the ultrasonic sensor No or Yes NO: No sensor parameter malfunction
Yes: Sensor parameter malfunction 		RoB X20C6 is output if YES
Ultrasonic Sensor (Front Right Corner) Temporarily Unavailable - Flowing Water Continuously Continuous flowing water status of the ultrasonic sensor No or Yes NO: No sensor continuous flowing water
Yes: Sensor continuous flowing water 		RoB X20C6 is output if YES
Ultrasonic Sensor (Front Left Corner) Temporarily Unavailable - Circuit Open Open circuit status of the ultrasonic sensor No or Yes NO: No sensor open circuit
Yes: Sensor open circuit 		RoB X20C7 is output if YES
Ultrasonic Sensor (Front Left Corner) Temporarily Unavailable - Freeze/Dirt Frozen/dirty status of the ultrasonic sensor No or Yes NO: Sensor not frozen/dirty
Yes: Sensor frozen/dirty 		RoB X20C7 is output if YES
Ultrasonic Sensor (Front Left Corner) Temporarily Unavailable - Foreign Material Fixing Foreign material fixing status of the ultrasonic sensor No or Yes NO: Foreign matter not stuck on sensor
Yes: Foreign matter stuck on sensor 		RoB X20C7 is output if YES
Ultrasonic Sensor (Front Left Corner) Temporarily Unavailable - Parameter Malfunction Parameter malfunction status of the ultrasonic sensor No or Yes NO: No sensor parameter malfunction
Yes: Sensor parameter malfunction 		RoB X20C7 is output if YES
Ultrasonic Sensor (Front Left Corner) Temporarily Unavailable - Flowing Water Continuously Continuous flowing water status of the ultrasonic sensor No or Yes NO: No sensor continuous flowing water
Yes: Sensor continuous flowing water 		RoB X20C7 is output if YES
Ultrasonic Sensor (Rear Right Corner) Temporarily Unavailable - Circuit Open Open circuit status of the ultrasonic sensor No or Yes NO: No sensor open circuit
Yes: Sensor open circuit 		RoB X20CA is output if YES
Ultrasonic Sensor (Rear Right Corner) Temporarily Unavailable - Freeze/Dirt Frozen/dirty status of the ultrasonic sensor No or Yes NO: Sensor not frozen/dirty
Yes: Sensor frozen/dirty 		RoB X20CA is output if YES
Ultrasonic Sensor (Rear Right Corner) Temporarily Unavailable - Foreign Material Fixing Foreign material fixing status of the ultrasonic sensor No or Yes NO: Foreign matter not stuck on sensor
Yes: Foreign matter stuck on sensor 		RoB X20CA is output if YES
Ultrasonic Sensor (Rear Right Corner) Temporarily Unavailable - Foreign Material Fixing (Curl Up) Foreign material fixing (curl up) status of the ultrasonic sensor No or Yes NO: Foreign matter (curl up) not stuck on sensor
Yes: Foreign matter (curl up) stuck on sensor 		RoB X20CA is output if YES
Ultrasonic Sensor (Rear Right Corner) Temporarily Unavailable - Parameter Malfunction Parameter malfunction status of the ultrasonic sensor No or Yes NO: No sensor parameter malfunction
Yes: Sensor parameter malfunction 		RoB X20CA is output if YES
Ultrasonic Sensor (Rear Right Corner) Temporarily Unavailable - Flowing Water Continuously Continuous flowing water status of the ultrasonic sensor No or Yes NO: No sensor continuous flowing water
Yes: Sensor continuous flowing water 		RoB X20CA is output if YES
Ultrasonic Sensor (Rear Left Corner) Temporarily Unavailable - Circuit Open Open circuit status of the ultrasonic sensor No or Yes NO: No sensor open circuit
Yes: Sensor open circuit 		RoB X20CB is output if YES
Ultrasonic Sensor (Rear Left Corner) Temporarily Unavailable - Freeze/Dirt Frozen/dirty status of the ultrasonic sensor No or Yes NO: Sensor not frozen/dirty
Yes: Sensor frozen/dirty 		RoB X20CB is output if YES
Ultrasonic Sensor (Rear Left Corner) Temporarily Unavailable - Foreign Material Fixing Foreign material fixing status of the ultrasonic sensor No or Yes NO: Foreign matter not stuck on sensor
Yes: Foreign matter stuck on sensor 		RoB X20CB is output if YES
Ultrasonic Sensor (Rear Left Corner) Temporarily Unavailable - Foreign Material Fixing (Curl Up) Foreign material fixing (curl up) status of the ultrasonic sensor No or Yes NO: Foreign matter (curl up) not stuck on sensor
Yes: Foreign matter (curl up) stuck on sensor 		RoB X20CB is output if YES
Ultrasonic Sensor (Rear Left Corner) Temporarily Unavailable - Parameter Malfunction Parameter malfunction status of the ultrasonic sensor No or Yes NO: No sensor parameter malfunction
Yes: Sensor parameter malfunction 		RoB X20CB is output if YES
Ultrasonic Sensor (Rear Left Corner) Temporarily Unavailable - Flowing Water Continuously Continuous flowing water status of the ultrasonic sensor No or Yes NO: No sensor continuous flowing water
Yes: Sensor continuous flowing water 		RoB X20CB is output if YES
Body Electrical > Clearance Warning > Data List
Tester Display
Ultrasonic Sensor (Front Right Corner) Temporarily Unavailable - Circuit Open
Ultrasonic Sensor (Front Right Corner) Temporarily Unavailable - Freeze/Dirt
Ultrasonic Sensor (Front Right Corner) Temporarily Unavailable - Foreign Material Fixing
Ultrasonic Sensor (Front Right Corner) Temporarily Unavailable - Parameter Malfunction
Ultrasonic Sensor (Front Right Corner) Temporarily Unavailable - Flowing Water Continuously
Ultrasonic Sensor (Front Left Corner) Temporarily Unavailable - Circuit Open
Ultrasonic Sensor (Front Left Corner) Temporarily Unavailable - Freeze/Dirt
Ultrasonic Sensor (Front Left Corner) Temporarily Unavailable - Foreign Material Fixing
Ultrasonic Sensor (Front Left Corner) Temporarily Unavailable - Parameter Malfunction
Ultrasonic Sensor (Front Left Corner) Temporarily Unavailable - Flowing Water Continuously
Ultrasonic Sensor (Rear Right Corner) Temporarily Unavailable - Circuit Open
Ultrasonic Sensor (Rear Right Corner) Temporarily Unavailable - Freeze/Dirt
Ultrasonic Sensor (Rear Right Corner) Temporarily Unavailable - Foreign Material Fixing
Ultrasonic Sensor (Rear Right Corner) Temporarily Unavailable - Foreign Material Fixing (Curl Up)
Ultrasonic Sensor (Rear Right Corner) Temporarily Unavailable - Parameter Malfunction
Ultrasonic Sensor (Rear Right Corner) Temporarily Unavailable - Flowing Water Continuously
Ultrasonic Sensor (Rear Left Corner) Temporarily Unavailable - Circuit Open
Ultrasonic Sensor (Rear Left Corner) Temporarily Unavailable - Freeze/Dirt
Ultrasonic Sensor (Rear Left Corner) Temporarily Unavailable - Foreign Material Fixing
Ultrasonic Sensor (Rear Left Corner) Temporarily Unavailable - Foreign Material Fixing (Curl Up)
Ultrasonic Sensor (Rear Left Corner) Temporarily Unavailable - Parameter Malfunction
Ultrasonic Sensor (Rear Left Corner) Temporarily Unavailable - Flowing Water Continuously
50003 438 116,117,118,120,121,122,123,124,126,127,140,141,142,143,144,145,146,147,148,149,150,151

Result:
Result Proceed to
Sensor frozen history displays "NO" A
Sensor frozen history displays "YES" B



A

END

B

REPLACE ULTRASONIC SENSOR

for Front:

Click hereAudio / Visual / Telematics>PARK ASSIST / MONITORING>ULTRASONIC SENSOR (for Front)>REMOVAL

for Rear:

Click hereAudio / Visual / Telematics>PARK ASSIST / MONITORING>ULTRASONIC SENSOR (for Rear)>REMOVAL