Radio Receiver Assembly Communication Stop Mode [10/2018 - 07/2022]: Procedure

1. Disconnect the cable from the negative (-) auxiliary battery terminal.
2. Disconnect the radio receiver assembly connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   F2-13 (CANH) - F2-14 (CANL)	Cable disconnected from negative (-) auxiliary battery terminal	54 to 69 Ω

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	Front view of wire harness connector (to Radio Receiver Assembly)

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE CAN BRANCH LINES OR CONNECTOR (RADIO RECEIVER ASSEMBLY) 

Result: 

OK 

See step  2

1. Disconnect the radio receiver assembly connector.
2. Measure the resistance according to the value(s) in the table below.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a

   Front view of wire harness connector (to Radio Receiver Assembly)

   -

   -

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   F1-1 (GND1) - Body ground	Cable disconnected from negative (-) auxiliary battery terminal	Below 1 Ω

3. Reconnect the cable to the negative (-) auxiliary battery terminal.
4. Measure the voltage according to the value(s) in the table below.

   Standard Voltage

   Tester Connection	Switch Condition	Specified Condition
   F2-19 (IG) - Body ground	Engine switch on (IG)	11 to 14 V
   F1-4 (+B1) - Body ground	Always	11 to 14 V
   F1-15 (ACC1) - Body ground	Engine switch on (ACC)	11 to 14 V

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY. Refer to  REMOVAL [10/2018 - 10/2019]  Refer to  REMOVAL [10/2019 - 07/2022] 

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT)