Inspection Procedure

1. Check the Data List to ensure proper function of the door unlock detection switch.

   Main Body: 

   DIAGNOSTIC NOTE
   
   

   Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
   Key Unlock Warning SW	Unlock warning switch signal /ON or OFF	ON: Key is in ignition key cylinder OFF: No key is in ignition key cylinder	-

   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  

1. Remove the unlock warning switch assembly.
2. Measure the resistance according to the value(s) in the table below.

   Standard resistance 

   TESTER CONNECTION SPECIFIED CONDITION CHART
   
   

   Tester Connection	Condition	Specified Condition
   1 - 2	Free	10 kΩ or higher
   1 - 2	Pushed	Below 1 Ω

Fig 1: Inspecting Unlock Warning Switch Assembly
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPLACE UNLOCK WARNING SWITCH ASSEMBLY 

OK: Go to next step 

1. Disconnect the unlock warning switch assembly connector.
2. Disconnect the instrument panel J/B connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard resistance 

   TESTER CONNECTION SPECIFIED CONDITION CHART
   
   

   Tester Connection	Condition	Specified Condition
   K4-2 - B4-21 (KSW)	Always	Below 1 Ω
   K4-1 - Body ground	Always	Below 1 Ω

Fig 2: Checking Wire Harness (Unlock Warning Switch - Instrument Panel J/B (Body ECU))
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

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