Inspection Procedure

1. Check the DATA LIST to ensure proper function of the door unlock detection switch.

   MASTER SW (Multiplex Network Master Switch Assembly): 

   MASTER SW (MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY)
   
   

   Item	Measurement Item / Display (Range)	Normal Condition	Diagnostic Note
   DOOR KEY LOCK	Driver door lock/unlock switch lock signal (key-linked lock switch) /ON or OFF	ON: Driver side door key cylinder is turned to LOCK OFF: Driver side door key cylinder is not turned to LOCK	-
   DOOR KEY UNLOCK	Driver door lock/unlock switch unlock signal (key-linked unlock switch) /ON or OFF	ON: Driver side door key cylinder is turned to UNLOCK OFF: Driver side door key cylinder is not turned to UNLOCK	-

   OK: 

   The display is as specified in the normal condition column. 

NG: Go to step 2 

OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN  PROBLEM SYMPTOMS TABLE  

1. Remove the front door lock assembly LH.
2. Measure the resistance according to the value(s) in the table below.

   Standard resistance 

   FRONT DOOR LOCK ASSEMBLY (DOOR KEY LOCK AND UNLOCK SWITCH)
   
   

   Tester Connection	Condition	Specified Condition
   7 - 9	ON (Door lock set to LOCK)	Below 1 Ω
   7 - 9, 7 - 10	OFF (Free)	10 kΩ or higher
   7 - 10	ON (Door lock set to UNLOCK)	Below 1 Ω

   Fig 1: Identifying Front Door Lock Assembly (Door Key Lock And Unlock Switch)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPLACE FRONT DOOR LOCK ASSEMBLY 

OK: Go to next step 

1. Disconnect the front door lock assembly LH connector.
2. Disconnect the multiplex network master switch assembly connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard resistance 

   WIRE HARNESS (FRONT DOOR LOCK ASSEMBLY - MULTIPLEX NETWORK MASTER SWITCH)
   
   

   Tester Connection (Symbols)	Condition	Specified Condition
   M2-9 (L) - M7-4 (KL)	Always	Below 1 Ω
   M2-10 (UL) - M7-14 (KUL)	Always	Below 1 Ω
   M2-7 (E) - Body ground	Always	Below 1 Ω
   M7-4 (KL) - Body ground	Always	10 kΩ or higher
   M7-14 (KUL) - Body ground	Always	10 kΩ or higher

   Fig 2: Identifying Front Door Lock Assembly (M2) And Multiplex Network Master Switch (M7) Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: REPLACE MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY