PARK ASSIST / MONITORING  PARKING SUPPORT BRAKE SYSTEM  HOW TO PROCEED WITH TROUBLESHOOTING  

Measure the auxiliary battery voltage with tha ignition switch off.

Standard Voltage:

11 to 14 V

If the voltage is below 11 V, replace or recharge the auxiliary battery before proceeding to the next step.

Use the GTS to check if the CAN communication system is functioning normally.

for Gasoline Mode: Click herePower Source / Network>NETWORKING>CAN COMMUNICATION SYSTEM (for Gasoline Model (except NR Series))>DIAGNOSIS SYSTEM202304,999999,_57,_080743,_0598531,RM100000002BFVC,

except Gasoline Model: Click herePower Source / Network>NETWORKING>CAN COMMUNICATION SYSTEM (for HV Model)>DIAGNOSIS SYSTEM202307,999999,_57,_080743,_0392424,RM100000002CP2C,

Result:

Result	Proceed to
CAN communication system DTCs are not output	A
CAN communication system DTCs are output	B

Check for DTCs.

Body Electrical > Clearance Warning > Trouble Codes

50001 438

Result:

Result	Proceed to
DTCs are output	A
DTCs are not output (Problem symptom does not occur)	B
DTCs are not output (Problem symptom occurs)	C

Refer to Diagnostic Trouble Code Chart.

Click hereAudio / Visual / Telematics>PARK ASSIST / MONITORING>PARKING SUPPORT BRAKE SYSTEM>DIAGNOSTIC TROUBLE CODE CHART202307,999999,_56,_080754,_0470654,RM100000002CLTL,

NOTICE:

The clearance warning ECU assembly outputs DTCs for the following system. When DTCs other than those in Diagnostic Trouble Code Chart for the parking support brake system are output, refer to Diagnostic Trouble Code Chart for the relevant system.

System	Proceed to
Toyota Parking Assist-Sensor System (w/ Parking Support Brake System)	(202104,999999,_56,_080754,_0470653,RM100000001VNUG,)

Refer to Symptom Simulation.

Click hereGeneral>INTRODUCTION>HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS>HOW TO PROCEED WITH TROUBLESHOOTING201906,999999,_V1,_080724,_0393250,RM100000001HWSQ,

Refer to Problem Symptoms Table.

Click hereAudio / Visual / Telematics>PARK ASSIST / MONITORING>PARKING SUPPORT BRAKE SYSTEM>PROBLEM SYMPTOMS TABLE202307,999999,_56,_080754,_0470654,RM100000002CLTJ,

Result:

Result	Proceed to
Fault is not listed in Problem Symptoms Table	A
Fault is listed in Problem Symptoms Table	B

Operation Check

Click hereAudio / Visual / Telematics>PARK ASSIST / MONITORING>PARKING SUPPORT BRAKE SYSTEM>OPERATION CHECK202304,999999,_56,_080754,_0470654,RM100000002AHFR,

Terminals of ECU

Click hereAudio / Visual / Telematics>PARK ASSIST / MONITORING>PARKING SUPPORT BRAKE SYSTEM>TERMINALS OF ECU202304,999999,_56,_080754,_0470654,RM100000002AHFW,

Data List / Active Test

Click hereAudio / Visual / Telematics>PARK ASSIST / MONITORING>PARKING SUPPORT BRAKE SYSTEM>DATA LIST / ACTIVE TEST202304,999999,_56,_080754,_0470654,RM100000002AHFZ,