RM38N0EC _56 Audio / Visual / Telematics _111825 PARK ASSIST / MONITORING _0501857 PARKING SUPPORT BRAKE SYSTEM T

PARK ASSIST / MONITORING PARKING SUPPORT BRAKE SYSTEM PROBLEM SYMPTOMS TABLE

HINT:: ·

Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.

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Inspect the fuses and relays related to this system before inspecting the suspected areas below.

General
Symptom	Suspected Area	Link
System does not operate at all	Check that the toyota parking assist-sensor system is operating normally	-
	Check that the CAN communication system is operating normally*1	202203,202303,_57,_111829,_0501336,RM10000000220XE,202303,999999,_57,_111829,_0501336,RM100000002AL7W,
	Check that the CAN communication system is operating normally*2	202203,202303,_57,_111829,_0499998,RM100000002205J,202303,999999,_57,_111829,_0499998,RM10000000291N8,
	Check that the blind spot monitor system is operating normally*3	-
	Steering pad switch assembly	202203,202303,_55,_111820,_0503157,RM1000000022E9C,202303,202406,_55,_111820,_0503157,RM100000002B1IZ,202406,999999,_55,_111820,_0503157,RM100000002MQ2J,
	Spiral cable sub-assembly	202203,202303,_58,_111838,_0502521,RM1000000022EG9,202303,202406,_58,_111838,_0502521,RM100000002AQNL,202406,202409,_58,_111838,_0502521,RM100000002MS5A,202409,999999,_58,_111838,_0502521,RM100000002OMCX,
	Clearance warning ECU assembly	202111,999999,_56,_111825,_0500520,RM100000001Z2QT,

Sonar Function
Symptom	Suspected Area	Link
Detection function operates when the operating conditions are not met	Check that the SFI System is operating normally*2	-
	Check that the hybrid control system is operating normally*1	-
	No. 2 skid control ECU (brake actuator assembly)*1	202203,202303,_54,_111814,_0500722,RM1000000022E3V,202303,202406,_54,_111814,_0500722,RM100000002B2OC,202406,999999,_54,_111814,_0500722,RM100000002MRSA,
	Skid control ECU (brake actuator assembly)*2	202203,202303,_54,_111814,_0500728,RM1000000022E3W,202303,202406,_54,_111814,_0500728,RM100000002B2O5,202406,999999,_54,_111814,_0500728,RM100000002MRSD,
	Check that the blind spot monitor system is operating normally*3	-
	Clearance warning ECU assembly	202111,999999,_56,_111825,_0500520,RM100000001Z2QT,
Detection function operates when vehicle is not within the required speed range (speedometer not malfunctioning)	Check that the CAN communication system is operating normally*1	202203,202303,_57,_111829,_0501336,RM10000000220XE,202303,999999,_57,_111829,_0501336,RM100000002AL7W,
	Check that the CAN communication system is operating normally*2	202203,202303,_57,_111829,_0499998,RM100000002205J,202303,999999,_57,_111829,_0499998,RM10000000291N8,
	Clearance warning ECU assembly	202111,999999,_56,_111825,_0500520,RM100000001Z2QT,

Buzzer Function
Symptom	Suspected Area	Link
Parking support brake system is normal but buzzer operation is intermittent	Check that the temporary mute function is not operating	-
	Check that the blind spot monitor system is operating normally*3	-
	Proceed to "No. 1 Clearance Warning Buzzer Circuit"	202111,999999,_56,_111825,_0501856,RM100000001Z7UX,
	Proceed to "No. 2 Clearance Warning Buzzer Circuit"	202111,999999,_56,_111825,_0501856,RM100000001Z7UZ,
	Clearance warning ECU assembly	202111,999999,_56,_111825,_0500520,RM100000001Z2QT,
	Combination meter assembly	202203,202303,_58,_111835,_0501288,RM1000000022EX1,202303,202406,_58,_111835,_0501288,RM100000002AL91,202406,999999,_58,_111835,_0501288,RM100000002MQF3,

Display Function
Symptom	Suspected Area	Link
While the parking support brake system is operating, no parking support brake notifications are displayed on the multi-information display.	Check that the CAN communication system is operating normally*1	202203,202303,_57,_111829,_0501336,RM10000000220XE,202303,999999,_57,_111829,_0501336,RM100000002AL7W,
	Check that the CAN communication system is operating normally*2	202203,202303,_57,_111829,_0499998,RM100000002205J,202303,999999,_57,_111829,_0499998,RM10000000291N8,
	Clearance warning ECU assembly	202111,999999,_56,_111825,_0500520,RM100000001Z2QT,
	Combination meter assembly	202203,202303,_58,_111835,_0501288,RM1000000022EX1,202303,202406,_58,_111835,_0501288,RM100000002AL91,202406,999999,_58,_111835,_0501288,RM100000002MQF3,
While the parking support brake system is operating, no parking support brake notifications are displayed on the headup display.*4	Check that the CAN communication system is operating normally*1	202203,202303,_57,_111829,_0501336,RM10000000220XE,202303,999999,_57,_111829,_0501336,RM100000002AL7W,
	Check that the CAN communication system is operating normally*2	202203,202303,_57,_111829,_0499998,RM100000002205J,202303,999999,_57,_111829,_0499998,RM10000000291N8,
	Clearance warning ECU assembly	202111,999999,_56,_111825,_0500520,RM100000001Z2QT,
	Meter mirror sub-assembly	202203,202303,_58,_111835,_0525352,RM10000000226CI,202303,202406,_58,_111835,_0525352,RM100000002AL93,202406,999999,_58,_111835,_0525352,RM100000002MQEL,
"PKSB Malfunction Visit Your Dealer" is displayed	Check that the CAN communication system is operating normally*1	202203,202303,_57,_111829,_0501336,RM10000000220XE,202303,999999,_57,_111829,_0501336,RM100000002AL7W,
	Check that the CAN communication system is operating normally*2	202203,202303,_57,_111829,_0499998,RM100000002205J,202303,999999,_57,_111829,_0499998,RM10000000291N8,
	Combination meter assembly	202203,202303,_58,_111835,_0501288,RM1000000022EX1,202303,202406,_58,_111835,_0501288,RM100000002AL91,202406,999999,_58,_111835,_0501288,RM100000002MQF3,
	Clearance warning ECU assembly	202111,999999,_56,_111825,_0500520,RM100000001Z2QT,
"PKSB Unavailable" is displayed	Check that no foreign matter is attached to the ultrasonic sensors.	-
	Check that the CAN communication system is operating normally*1	202203,202303,_57,_111829,_0501336,RM10000000220XE,202303,999999,_57,_111829,_0501336,RM100000002AL7W,
	Check that the CAN communication system is operating normally*2	202203,202303,_57,_111829,_0499998,RM100000002205J,202303,999999,_57,_111829,_0499998,RM10000000291N8,
	Check that the toyota parking assist-sensor system is operating normally	-
	Check that the blind spot monitor system is operating normally*3	-
	Combination meter assembly	202203,202303,_58,_111835,_0501288,RM1000000022EX1,202303,202406,_58,_111835,_0501288,RM100000002AL91,202406,999999,_58,_111835,_0501288,RM100000002MQF3,
	Clearance warning ECU assembly	202111,999999,_56,_111825,_0500520,RM100000001Z2QT,
Parking support brake system does not operate when there is a possibility of a collision (Warning message "PKSB Unavailable" not displayed)	Check the installation of the ultrasonic sensors (front)	202203,999999,_56,_111825,_0500524,RM1000000022L7A,
	Check the installation of the ultrasonic sensors (rear)	202111,999999,_56,_111825,_0500525,RM100000001Z2R9,
	Adjust the installation of the ultrasonic sensors as necessary.	202203,202406,_56,_111825,_0501857,RM100000002242H,202406,999999,_56,_111825,_0501857,RM100000002KVJJ,
	Ultrasonic sensors (front)	202203,202406,_56,_111825,_0500524,RM1000000022L79,202406,202409,_56,_111825,_0500524,RM100000002MQNQ,202409,999999,_56,_111825,_0500524,RM100000002OMKA,
	Ultrasonic sensors (rear)	202203,202303,_56,_111825,_0500525,RM1000000022RWE,202303,202406,_56,_111825,_0500525,RM100000002ANIC,202406,999999,_56,_111825,_0500525,RM100000002MQNZ,
	Clearance warning ECU assembly	202111,999999,_56,_111825,_0500520,RM100000001Z2QT,
Parking support brake system control operates when there is no possibility of a collision	Check the installation of the ultrasonic sensors (front)	202203,999999,_56,_111825,_0500524,RM1000000022L7A,
	Check the installation of the ultrasonic sensors (rear)	202111,999999,_56,_111825,_0500525,RM100000001Z2R9,
	Adjust the installation of the ultrasonic sensors as necessary.	202203,202406,_56,_111825,_0501857,RM100000002242H,202406,999999,_56,_111825,_0501857,RM100000002KVJJ,
	Ultrasonic sensors (front)	202203,202406,_56,_111825,_0500524,RM1000000022L79,202406,202409,_56,_111825,_0500524,RM100000002MQNQ,202409,999999,_56,_111825,_0500524,RM100000002OMKA,
	Ultrasonic sensors (rear)	202203,202303,_56,_111825,_0500525,RM1000000022RWE,202303,202406,_56,_111825,_0500525,RM100000002ANIC,202406,999999,_56,_111825,_0500525,RM100000002MQNZ,
	Clearance warning ECU assembly	202111,999999,_56,_111825,_0500520,RM100000001Z2QT,
Parking support brake system control cannot be turned off (PKSB OFF indicator does not illuminate)	Combination meter assembly (LED): Perform Active Test (Indicat. PKSB OFF LCD)	for Optitron Meter Type:202111,999999,_58,_111835,_0504957,RM100000001ZKLL, for TFT Meter Type:202111,999999,_58,_111835,_0504958,RM100000001ZKMB,
	Steering pad switch assembly	202203,202303,_55,_111820,_0503157,RM1000000022E9C,202303,202406,_55,_111820,_0503157,RM100000002B1IZ,202406,999999,_55,_111820,_0503157,RM100000002MQ2J,
	Spiral cable sub-assembly	202203,202303,_58,_111838,_0502521,RM1000000022EG9,202303,202406,_58,_111838,_0502521,RM100000002AQNL,202406,202409,_58,_111838,_0502521,RM100000002MS5A,202409,999999,_58,_111838,_0502521,RM100000002OMCX,
	Clearance warning ECU assembly	202111,999999,_56,_111825,_0500520,RM100000001Z2QT,
PKSB OFF indicator illuminates	Check that no foreign matter is attached to the ultrasonic sensors.	-

*1: for HV Model

*2: for Gasoline Model

*3: w/ Blind Spot Monitor System

*4: w/ Headup Display System