DTC U0141: Lost Communication with Body Control Module "A" [09/2015 - ]: Procedure

1. Disconnect the luggage room junction block assembly (rear junction block ECU) connectors.

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   TEXT IN ILLUSTRATION
   
   

   *a

   Front view of wire harness connector (to Rear Junction Block ECU [Luggage Room Junction Block Assembly])

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

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   LD-4 (MPXB) - Body ground	Always	11 to 14 V
   LH-1 (+BT1) - Body ground	Always	11 to 14 V
   LH-1 (+BS1) - Body ground	Always	11 to 14 V
   LH-1 (+BS2) - Body ground	Always	11 to 14 V

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

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   LA-43 (PGND) - Body ground	Always	Below 1 Ω

Result:  OK

OK 

REPLACE LUGGAGE ROOM JUNCTION BLOCK ASSEMBLY 

Result:  NG

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR