Multi-media Module Receiver Assembly Communication Stop Mode [10/2015 - ]: Procedure

1. Disconnect the cable from the negative (-) battery terminal.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

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
   K57-1 (CANH) - K57-2 (CANL)	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 (RADIO RECEIVER ASSEMBLY) 

Result: 

OK 

See step  2

1. 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 [10/2015 - 09/2016] , or refer to INITIALIZATION [09/2016 - 09/2017] , or refer to INITIALIZATION [09/2017 - ]

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

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

   Standard Voltage

   Tester Connection	Switch Condition	Specified Condition
   K57-17 (+B1) - Body ground	Always	11 to 14 V
   K57-15 (IG) - Body ground	Engine switch on (IG)	11 to 14 V
   K57-16 (ACC1) - Body ground	Engine switch on (ACC)	11 to 14 V

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

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   K57-12 (GND1) - Body ground	Always	Below 1 Ω

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE RADIO RECEIVER ASSEMBLY. Refer to  REMOVAL [10/2015 - 09/2017]  , or refer to  REMOVAL [09/2017 - ] 

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR