DTC B156D: Blu-ray Disc Player Disconnected [10/2017 - 10/2022]: Procedure

1. Clear the DTCs.

   Refer to DTC CHECK / CLEAR [10/2017 - 10/2022]

   Body Electrical > Navigation System > Clear DTCs 

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  2

1. Check for DTCs.

   Refer to DTC CHECK / CLEAR [10/2017 - 10/2022]

   Body Electrical > Navigation System > Trouble Codes 

   OK

   DTC B156D is not output.

   Result

   Proceed to
   OK
   NG

Result: 

OK 

USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [10/2017 - 09/2018]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [09/2018 - 09/2019]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [09/2019 - 10/2020]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [10/2020 - 11/2021]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [11/2021 - 10/2022] 

Result: 

NG 

See step  3

1. Turn the power switch off.
2. Check that the connectors are properly connected to the multi-display controller sub-assembly and disc player assembly.

   OK

   Connectors are properly connected.

   Result

   Result	Proceed to
   The connectors are properly connected	A
   The connectors are not properly connected	B

Result: 

B 

CONNECT CONNECTORS PROPERLY 

Result: 

A 

See step  4

1. Disconnect the L140 disc player assembly connector.
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   L140-13 (GND) - Body ground	Always	Below 1 Ω

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

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   L140-8 (+B) - Body ground	Power switch off	11 to 14 V
   L140-7 (ACC) - Body ground	Power switch on (ACC)	11 to 14 V

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  5

1. Disconnect the L137 multi-display controller sub-assembly connector.
2. Disconnect the L140 disc player assembly connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   L137-14 (TX3+) - L140-9 (TX+)	Always	Below 1 Ω
   L137-15 (TX3-) - L140-10 (TX-)	Always	Below 1 Ω
   L137-14 (TX3+) - Body ground	Always	10 kΩ or higher
   L137-15 (TX3-) - Body ground	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  6

1. Replace the disc player assembly with a new or known good one.

   Refer to REMOVAL [10/2017 - ]

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  7

1. Clear the DTCs.

   Refer to DTC CHECK / CLEAR [10/2017 - 10/2022]

   Body Electrical > Navigation System > Clear DTCs 

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  8

1. Check for DTCs.

   Refer to DTC CHECK / CLEAR [10/2017 - 10/2022]

   Body Electrical > Navigation System > Trouble Codes 

   OK

   DTC B156D is not output.

   Result

   Proceed to
   OK
   NG

Result: 

OK 

END (DISC PLAYER ASSEMBLY IS DEFECTIVE) 

Result: 

NG 

REPLACE MULTI-DISPLAY CONTROLLER SUB-ASSEMBLY. Refer to  REMOVAL [10/2017 - ]