Driver Side Door UNLOCK Detection Switch Circuit: Procedure

1. Check the Data List to ensure proper function of the door unlock detection switch.
   MASTER SW (MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY):
   
   

   Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
   Lock Pos SW	Driver side door unlock detection switch signal /ON or OFF	ON: Driver side door is unlocked OFF: Driver side door is locked	-

   OK

   The display is as specified in the normal condition column.

NG → See step   2 

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

1. Remove the front door lock assembly LH.
   Fig 1: Identifying Door Lock Assembly Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the resistance according to the value(s) in the table below.

   Standard resistance

   Tester Connection	Measurement Condition	Door Lock Condition	Specified Condition
   7 - 8	Battery positive (+) → Terminal 4 Battery negative (-) → Terminal 1	Lock	10 kΩ or higher
   7 - 8	Battery positive (+) → Terminal 1 Battery negative (-) → Terminal 4	Unlock	Below 1 Ω

NG → REPLACE FRONT DOOR LOCK ASSEMBLY LH 

OK: Go to next step 

1. Disconnect the front door lock assembly LH connector.
   Fig 2: Identifying Front Door Lock Assembly LH Connector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Disconnect the multiplex network master switch assembly connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard resistance

   Tester Connection (Symbols)	Condition	Specified Condition
   M2-8 (LSSR) - M17-1 (LSW)	Always	Below 1 Ω
   M2-8 (LSSR) - Body ground	Always	10 kΩ or higher
   M2-7 (E) - Body ground	Always	Below 1 Ω

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK → REPLACE MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY