Radio Receiver Assembly Communication Stop Mode [08/2019 - ]: Procedure

1. Disconnect the cable from the negative (-) auxiliary battery terminal.
2. Disconnect the J147 or J151 radio receiver assembly connector.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *A	w/ Audio and Visual System
   *B	w/ Navigation System
   *a	Front view of wire harness connector (to Radio Receiver Assembly)

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

   Standard Resistance

   W/ NAVIGATION SYSTEM
   
   

   Tester Connection	Condition	Specified Condition
   J147-13 (CANH) - J147-14 (CANL)	Cable disconnected from negative (-) auxiliary battery terminal	54 to 69 Ω

   W/ AUDIO AND VISUAL SYSTEM
   
   

   Tester Connection	Condition	Specified Condition
   J151-13 (CANH) - J151-14 (CANL)	Cable disconnected from negative (-) auxiliary battery terminal	54 to 69 Ω

   Result

   Result
   OK
   NG

Result: 

NG 

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

Result: 

OK 

See step  2

1. Disconnect the J145 or J148 radio receiver assembly connector.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *A	w/ Audio and Visual System	*B	w/ Navigation System
   *a	Front view of wire harness connector (to Radio Receiver Assembly)	-	-

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

   Standard Resistance

   W/ AUDIO AND VISUAL SYSTEM
   
   

   Tester Connection	Condition	Specified Condition
   J145-1 (GND1) - Body ground	Cable disconnected from negative (-) auxiliary battery terminal	Below 1 Ω

   W/ NAVIGATION SYSTEM
   
   

   Tester Connection	Condition	Specified Condition
   J148-1 (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

   W/ AUDIO AND VISUAL SYSTEM
   
   

   Tester Connection	Condition	Specified Condition
   J145-4 (+B1) - Body ground	Power switch off	11 to 14 V
   J145-15 (ACC1) - Body ground	Power switch on (ACC)	11 to 14 V
   J147-19 (IG) - Body ground	Power switch on (IG)	11 to 14 V

   W/ NAVIGATION SYSTEM
   
   

   Tester Connection	Condition	Specified Condition
   J148-4 (+B1) - Body ground	Power switch off	11 to 14 V
   J148-15 (ACC1) - Body ground	Power switch on (ACC)	11 to 14 V
   J151-19 (IG) - Body ground	Power switch on (IG)	11 to 14 V

   Result

   Result
   OK
   NG

Result: 

OK 

REPLACE RADIO RECEIVER ASSEMBLY. Refer to  REMOVAL [08/2019 - ] 

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT)