Audio Receiver Assembly Communication Stop Mode [08/2015 - 08/2019]: Procedure

1. Disconnect the cable from the negative (-) battery terminal before measuring the resistances of the main wire and branch wire.
   WARNING:

   Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.

   NOTE:

   When disconnecting the cable, some systems need to be initialized after the cable is reconnected (Refer to INITIALIZATION [08/2015 - 08/2019] ).

Result: 

NEXT 

See step  2

1. Disconnect the G49 radio and display receiver assembly connector.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

   Standard Resistance

   Tester Connection	Switch Condition	Specified Condition
   G49-9 (CANH) - G49-10 (CANL)	Ignition switch off	54 to 69 Ω

   TEXT IN ILLUSTRATION
   
   

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

Result: 

NG 

REPAIR OR REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY BRANCH WIRE OR CONNECTOR (CANH, CANL) 

Result: 

OK 

See step  3

1. Connect 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 [08/2015 - 08/2019] ).

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

2. Disconnect the G48 and G49 radio and display receiver assembly connectors.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   G48-7 (GND) - Body ground	Always	Below 1 Ω

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

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   G49-1 (IG) - Body ground	Ignition switch ON	11 to 14 V
   G48-4 (B) - Body ground	Always	11 to 14 V

   TEXT IN ILLUSTRATION
   
   

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

Result: 

OK 

REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY 

(Refer to REMOVAL [08/2015 - 08/2019] )

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR