DTC B1328-87: Lost Communication with Navigation System (Ethernet) Missing Message [11/2021 - ]: Procedure

Pre-procedure1

1. Disconnect the D7 radio and display receiver assembly connector.
2. Disconnect the D23 combination meter assembly connector.

   Procedure1

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

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   D7-2 (ETH+) - D23-1 (ET+)	Always	Below 1 Ω
   D7-1 (ETH-) - D23-2 (ET-)	Always	Below 1 Ω
   D7-2 (ETH+) or D23-1 (ET+) - Body ground	Always	10 kΩ or higher
   D7-1 (ETH-) or D23-2 (ET-) - Body ground	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

   Post-procedure1

4. None

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  2

1. Replace the radio and display receiver assembly with a new or known good one.

   HINT: 

   Refer to REMOVAL [11/2021 - ]

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  3

1. Clear the DTCs.

   Body Electrical > Combination Meter > Clear DTCs 

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  4

1. Wait 35 seconds or more.
2. Check for DTCs.

   Body Electrical > Combination Meter > Trouble Codes 

   Result

   Result	Proceed to
   DTC B1328-87 is not output	A
   DTC B1328-87 is output	B

Result: 

A 

END (RADIO AND DISPLAY RECEIVER ASSEMBLY IS DEFECTIVE) 

Result: 

B 

REPLACE COMBINATION METER ASSEMBLY. Refer to  REMOVAL [11/2021 - ]