Audio Receiver Assembly Communication Stop Mode [08/2014 - ]: Procedure

1. Turn the power switch off.
2. Disconnect the radio and display receiver assembly connector.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   TEXT IN ILLUSTRATION
   
   

   *1	Front view of wire harness connector (to Radio and Display Receiver Assembly)

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

   Standard Resistance

   Tester Connection	Switch Condition	Specified Condition
   L149-9 (CANH) - L149-10 (CANL)	Power switch off	54 to 69 Ω

NG → REPAIR OR REPLACE CAN BUS BRANCH WIRE OR CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY) 

OK: Go to next step 

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

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   TEXT IN ILLUSTRATION
   
   

   *1	Front view of wire harness connector (to Radio and Display Receiver Assembly)	*2	for 6 Speakers
   *3	for 8 Speakers	-	-

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   L146-4 (+B1) - Body ground*1 L138-1 (+B1) - Body ground*2	Always	11 to 14 V
   L146-3 (ACC1) - Body ground*1 L138-11 (ACC1) - Body ground*2	Power switch on (ACC)	11 to 14 V
   L149-1 (IG) - Body ground	Power switch on (IG)	11 to 14 V

   *1: for 6 Speakers

   *2: for 8 Speakers

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT) 

OK: Go to next step 

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

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   TEXT IN ILLUSTRATION
   
   

   *1	Front view of wire harness connector (to Radio and Display Receiver Assembly)
   *2	for 6 Speakers
   *3	for 8 Speakers

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   L146-7 (GND1) - Body ground*1 L138-20 (GND1) - Body ground*2	Always	Below 1 Ω

   *1: for 6 Speakers

   *2: for 8 Speakers

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR (GROUND TERMINAL) 

OK → See step   4