DTC B1328-87: Lost Communication with Navigation System (Ethernet) Missing Message [09/2023 - ]: Procedure

Pre-procedure1

• Disconnect the D10 radio and display receiver assembly connector.
• Disconnect the D18 combination meter assembly connector.

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

  Standard Resistance

  Tester Connection	Condition	Specified Condition	Result
  D10-2 (ETH+) - D18-1 (ET+)	Always	Below 1 Ω	Ω
  D10-1 (ETH-) - D18-2 (ET-)	Always	Below 1 Ω	Ω
  D10-2 (ETH+) or D18-1 (ET+) - Body ground	Always	10 kΩ or higher	kΩ
  D10-1 (ETH-) or D18-2 (ET-) - Body ground	Always	10 kΩ or higher	kΩ

  Result

  Proceed to
  OK
  NG

Post-procedure1

• 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 [09/2023 - 12/2023] , or refer to REMOVAL [12/2023 - ]

   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
   B1328-87 is not output	A
   B1328-87 is output	B

Result: 

A 

END (RADIO AND DISPLAY RECEIVER ASSEMBLY IS DEFECTIVE) 

Result: 

B 

REPLACE COMBINATION METER ASSEMBLY. Refer to  REMOVAL [09/2023 - ]