All Doors LOCK/UNLOCK Functions do not Operate Via Door Key Cylinder [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
   Door Key SW-Lock	Driver door key-linked lock / unlock switch lock signal	OFF or ON	OFF: Driver door key cylinder not turned to lock position ON: Driver door key cylinder turned to lock position	-
   D Door Key SW-UL	Driver door key-linked lock / unlock switch unlock signal	OFF or ON	OFF: Driver door key cylinder not turned to unlock position ON: Driver door key cylinder turned to unlock position	-

   Body Electrical > Main Body > Data List 

   Tester Display
   Door Key SW-Lock
   D Door Key SW-UL

   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 FRONT DOOR LOCK WITH MOTOR ASSEMBLY LH. Refer to  REMOVAL [12/2019 - 10/2022]  , or refer to  REMOVAL [10/2022 - 11/2023] 

Result: 

OK 

See step  3

1. Disconnect the H44 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
   J30-9 (L) - H44-18 (L2)	Always	Below 1 Ω
   J30-10 (UL) - H44-17 (UL3)	Always	Below 1 Ω
   J30-7 (E) - Body ground	Always	Below 1 Ω
   J30-9 (L) or H44-18 (L2) - Other terminals and body ground	Always	10 kΩ or higher
   J30-10 (UL) or H44-17 (UL3) - Other terminals and body ground	Always	10 kΩ or higher

   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