Inspection Procedure

READ VALUE OF DATA LIST (DOOR UNLOCK DETECTION SWITCH)

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

MASTER SW (Multiplex Network Master Switch Assembly):

DATA LIST - MASTER SW (MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY)

Item	Measurement Item / Display (Range)	Normal Condition	Diagnostic Note
LOCK POS SW	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.

NG: GO TO step 2

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

INSPECT FRONT DOOR LOCK ASSEMBLY (DOOR UNLOCK DETECTION SWITCH)

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

RESISTANCE SPECIFICATION

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

NG: REPLACE FRONT DOOR LOCK ASSEMBLY

Fig 1: Identifying Driver Side Door Unlock Detection Switch Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: Go to next step

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

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

RESISTANCE SPECIFICATION

Tester Connection	Condition	Specified Condition
D10-8 (LSSR) - P22-16 (LSW)	Always	Below 1 Ω
D10-7 (E) - Body ground	Always	Below 1 Ω

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

Fig 2: Identifying Front Door Lock And Multiplex Network Master Switch Connector Terminals

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