Clearance Warning ECU Communication Stop Mode [11/2018 - ]: Procedure

1. Disconnect the cable from the negative (-) battery terminal.
2. Disconnect the clearance warning ECU assembly connector.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *A	for TMC Made
   *B	for TMMC Made
   *a	Front view of wire harness connector (to Clearance Warning ECU Assembly)

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

   Standard Resistance

   FOR TMC MADE
   
   

   Tester Connection	Condition	Specified Condition
   H4-17 (R1) - H4-18 (R2)	Cable disconnected from negative (-) battery terminal	54 to 69 Ω

   FOR TMMC MADE
   
   

   Tester Connection	Condition	Specified Condition
   G25-17 (R1) - G25-18 (R2)	Cable disconnected from negative (-) battery terminal	54 to 69 Ω

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE CAN BRANCH WIRE OR CONNECTOR 

Result: 

OK 

See step  2

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

   Standard Resistance

   FOR TMC MADE
   
   

   Tester Connection	Condition	Specified Condition
   H4-28 (E) - Body ground	Cable disconnected from negative (-) battery terminal	Below 1 Ω

   FOR TMMC MADE
   
   

   Tester Connection	Condition	Specified Condition
   G25-28 (E) - Body ground	Cable disconnected from negative (-) battery terminal	Below 1 Ω

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *A	for TMC Made
   *B	for TMMC Made
   *a	Front view of wire harness connector (to Clearance Warning ECU Assembly)

2. Reconnect the cable to the negative (-) battery terminal.
   NOTE:

   When disconnecting the cable, some systems need to be initialized after the cable is reconnected.

   Refer to INITIALIZATION [11/2018 - 02/2019] , or refer to INITIALIZATION [02/2019 - 10/2019] , or refer to INITIALIZATION [10/2019 - 06/2020] , or refer to INITIALIZATION [06/2020 - 08/2020] , or refer to INITIALIZATION [08/2020 - 12/2021] , or refer to INITIALIZATION [12/2021 - 10/2022] , or refer to INITIALIZATION [10/2022 - 10/2023] , or refer to INITIALIZATION [10/2023 - ]

3. Measure the voltage according to the value(s) in the table below.

   Standard Voltage

   FOR TMC MADE
   
   

   Tester Connection	Switch Condition	Specified Condition
   H4-1 (IG) - Body ground	Ignition switch ON	11 to 14 V
   	Ignition switch off	Below 1 V

   FOR TMMC MADE
   
   

   Tester Connection	Switch Condition	Specified Condition
   G25-1 (IG) - Body ground	Ignition switch ON	11 to 14 V
   	Ignition switch off	Below 1 V

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE CLEARANCE WARNING ECU ASSEMBLY 

Refer to REMOVAL [11/2018 - 02/2019] , or refer to REMOVAL [02/2019 - ]

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR