Radio Receiver Assembly Communication Stop Mode [12/2022 - ]: Procedure

1. Disconnect the cable from the negative (-) auxiliary battery terminal.
2. Disconnect the K81 radio and display receiver assembly connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   K81-13 (CANH) - K81-14 (CANL)	Cable disconnected from negative (-) auxiliary battery terminal	54 to 69 Ω

   Result

   Proceed to
   OK
   NG

Result: 

NG 

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

Result: 

OK 

See step  2

1. Disconnect the K80 radio and display receiver assembly connector.
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   K80-1 (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	Condition	Specified Condition
   K80-15 (IG) - Body ground	Ignition switch ON	11 to 14 V
   K80-4 (+B1) - Body ground	Ignition switch off	11 to 14 V
   K80-16 (ACC1) - Body ground	Ignition switch ACC	11 to 14 V

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY 

Refer to REMOVAL [12/2022 - ]

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT)