Engine Hood Courtesy Switch Circuit [12/2019 - 11/2023]: Procedure

1. Read the Data List according to the display on the GTS.

   Body Electrical > Main Body > Data List 

   Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
   Hood Courtesy SW	Engine hood courtesy switch	OFF or ON	OFF: Engine hood closed ON: Engine hood open	-

   Body Electrical > Main Body > Data List 

   Tester Display
   Hood Courtesy SW

   OK

   The GTS display changes correctly in response to the engine hood courtesy switch (hood lock assembly) status.

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU). Refer to  REMOVAL [12/2019 - 10/2022]  , or refer to  REMOVAL [10/2022 - 11/2023] 

Result: 

NG 

See step  2

Refer to INSPECTION [12/2019 - ]

Result

Result: 

NG 

REPLACE ENGINE HOOD COURTESY SWITCH (HOOD LOCK ASSEMBLY). Refer to  REMOVAL [12/2019 - 09/2020]  , or refer to  REMOVAL [09/2020 - ] 

Result: 

OK 

See step  3

1. Disconnect the H43 main body ECU (multiplex network body ECU) connector.
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   A21-1 (+) - H43-30 (HCTY)	Always	Below 1 Ω
   A21-1 (+) or H43-30 (HCTY) - Other terminals and body ground	Always	10 kΩ or higher
   A21-2 (E) - Body ground	Always	Below 1 Ω

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU). Refer to  REMOVAL [12/2019 - 10/2022]  , or refer to  REMOVAL [10/2022 - 11/2023] 

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR