DTC B1510-87: Lost Communication with HUD Gigabit Video Interface Missing Message [10/2022 - ]: Procedure

1. Turn the settings of the headup display to ON and confirm the startup operation.

   Result

   Result	Proceed to
   The headup display starts	A
   The headup display does not start	B

Result: 

B 

See step  6

Result: 

A 

See step  2

Pre-procedure1

• Disconnect the C173 meter mirror sub-assembly connector.
• Disconnect the C172 combination meter assembly connector.

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

  Standard Resistance

  Tester Connection	Condition	Specified Condition	Result
  C173-1 (HGV+) - C172-2 (HGV+)	Always	Below 1 Ω	Ω
  C173-2 (HGV-) - C172-1 (HGV-)	Always	Below 1 Ω	Ω
  C173-3 (HGVG) - C172-3 (HGVG)	Always	Below 1 Ω	Ω
  C173-1 (HGV+) or C172-2 (HGV+) - Body ground	Always	10 kΩ or higher	kΩ
  C173-2 (HGV-) or C172-1 (HGV-) - 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  3

1. Replace the meter mirror sub-assembly with a new or known good one.

   HINT: 

   Refer to REMOVAL [10/2022 - 08/2023] , or refer to REMOVAL [08/2023 - ]

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  4

1. Clear the DTCs.

   Body Electrical > Combination Meter > Clear DTCs 

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  5

1. Check for DTCs.

   Body Electrical > Combination Meter > Trouble Codes 

   Result

   Result	Proceed to
   B1510-87 is not output	A
   B1510-87 is output	B

Result: 

A 

END (METER MIRROR SUB-ASSEMBLY IS DEFECTIVE) 

Result: 

B 

REPLACE COMBINATION METER ASSEMBLY. Refer to  REMOVAL [10/2022 - 10/2024]  , or refer to  REMOVAL [10/2024 - ] 

1. Choose the model to be inspected.

   Result

   Result	Proceed to
   w/o Stop and Start System	A
   w/ Stop and Start System	B

Result: 

B 

See step  8

Result: 

A 

See step  7

Pre-procedure1

• Disconnect the C8 meter mirror sub-assembly connector.

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

  Standard Voltage

  Tester Connection	Condition	Specified Condition	Result
  C8-5 (B) - Body ground	Ignition switch ON	11 to 14 V	V
  C8-10 (IG) - Body ground	Ignition switch off	Below 1 V	V
  C8-10 (IG) - Body ground	Ignition switch ON	11 to 14 V	V

  Result

  Proceed to
  OK
  NG

Post-procedure1

• None

Result: 

OK 

See step  10

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Pre-procedure1

• Disconnect the C8 meter mirror sub-assembly connector.

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

  Standard Voltage

  Tester Connection	Condition	Specified Condition	Result
  C8-10 (IG) - Body ground	Ignition switch off	Below 1 V	V
  C8-10 (IG) - Body ground	Ignition switch ON	10.5 to 16 V	V

  Result

  Proceed to
  OK
  NG

Post-procedure1

• None

Result: 

NG 

GO TO STOP AND START SYSTEM. Refer to  Backup Boost Converter Circuit [10/2022 - ] 

Result: 

OK 

See step  9

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

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	Front view of wire harness connector (to Meter Mirror Sub-assembly)

   Standard Voltage

   Tester Connection	Condition	Specified Condition	Result
   C8-5 (B) - Body ground	Ignition switch ON	11 to 14 V	V

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  10

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

   Standard Resistance

   Tester Connection	Condition	Specified Condition	Result
   C8-6 (ES)- Body ground	Always	Below 1 Ω	Ω

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE METER MIRROR SUB-ASSEMBLY. Refer to  REMOVAL [10/2022 - 08/2023]  , or refer to  REMOVAL [08/2023 - ] 

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR