Reverse Signal Circuit between Radio Receiver Assembly and Navigation ECU [08/2019 - ]: Procedure

1. Disconnect the J149 radio receiver assembly connector.
2. Disconnect the J153 navigation ECU connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   J149-28 (REV2) - J153-19 (REV2)	Always	Below 1 Ω
   J149-28 (REV2) or J153-19 (REV2) - Body ground	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

OK 

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to  PROBLEM SYMPTOMS TABLE [08/2019 - ] 

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR