Inspection Procedure

1. Using the intelligent tester, check that the unlock warning switch signal is output when the switch is operated.

   BODY (Body ECU): 

   SWITCH SIGNAL TABLE
   
   

   Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
   KEY UNLK WRN SW	Unlock warning SW signal/ON or OFF	ON: Key is in ignition key cylinder OFF: Key is not in ignition key cylinder	-

OK: Go to step   4 

NG: Go to next step 

Fig 1: Identifying Unlock Warning Switch Assembly

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Remove the unlock warning switch.
2. Inspect the unlock warning switch continuity.

   Standard resistance 

   TERMINAL SPECIFIED CONDITION
   
   

   Terminal No.	Condition	Specified Condition
   1 - 2	Switch free (key removed)	10 kΩ or higher
   	Switch pushed (key set)	Below 1 Ω

NG: REPLACE UNLOCK WARNING SWITCH ASSEMBLY 

OK: Go to next step 

Fig 2: Identifying Unlock Warning Switch & Body ECU Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Disconnect the K3 unlock warning switch and B5 body ECU connectors.
2. Check the continuity between the terminals of the unlock warning switch (K3) and body ECU (B5) connectors.

   Standard resistance (Check for open) 

   TERMINAL SPECIFIED CONDITION
   
   

   Symbols (Terminal No.)	Specified Condition
   (K3-2) - KSW (B5-14)	Below 1 Ω
   (K3-1) - Body ground	Below 1 Ω

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY 

1. Using the intelligent tester, check that the driver door courtesy switch signal is output when the switch is operated.

   BODY (Body ECU): 

   SWITCH SIGNAL TABLE
   
   

   Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
   D DOR CTY SW	Driver door courtesy SW signal / ON or OFF	ON: Driver door is open OFF: Driver door is closed	-

OK: REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY 

NG: Go to next step 

Fig 3: Identifying Front Door Courtesy Light Switch Assembly (Driver Side)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Remove the courtesy light switch.
2. Inspect the courtesy light switch continuity.

   Standard resistance 

   TERMINAL SPECIFIED CONDITION
   
   

   Terminal No.	Condition	Specified Condition
   1 - Body ground	Free	Below 1 Ω
   	Pushed	10 kΩ or higher

NG: REPLACE FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY 

OK: Go to next step 

Fig 4: Identifying Courtesy Light Switch & Body ECU Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Disconnect the courtesy light switch and body ECU connectors.
2. Check the continuity between the terminals of the courtesy light switch (D12) and body ECU (B4) connectors.

   Standard resistance (Check for open) 

   TERMINAL SPECIFIED CONDITION
   
   

   Symbols (Terminal No.)	Specified Condition
   (D12-1) - DCTY (B4-23)	Below 1 Ω

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY