Inspection Procedure

1. Using the hand-held tester, check that the un-lock warning switch signal is output when the switch is operated.
   STANDARD (BODY ECU (SWITCH CONDITION))
   
   

   Item	Measurement Item Display (Range)	Normal Condition	Diagnostic Note
   KEY UNLK WRN SW	Key un-lock 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 

1. Remove the un-lock warning switch.
2. Inspect the un-lock warning switch continuity.

Fig 1: Inspecting Un-Lock Warning Switch Assy

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Fig 2: STANDARD

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NG: REPLACE UN-LOCK WARNING SWITCH ASSY 

OK: Go To Next Step 

1. Disconnect the K3 un-lock warning switch and B12 body ECU connectors.
2. Check the continuity between the terminals of the un-lock warning switch (K3) and body ECU (B6) connectors.

Fig 3: Identifying Un-Lock Warning Switch (K3) And Body ECU (B6) Connectors Terminals

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Fig 4: STANDARD

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NG: REPAIR OR REPLACE HARNESS AND CONNECTOR 

OK: REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSY 

1. Using the hand-held tester, check that the driver door courtesy switch signal is output when the switch is operated.
   STANDARD (BODY ECU (SWITCH CONDITION))
   
   

   Item	Measurement item/Display (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 COURTESY LAMP SWITCH 

   NG: Go To Next Step 

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

Fig 5: Inspecting Courtesy Lamp Switch

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Fig 6: STANDARD

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NG: REPAIR OR REPLACE HARNESS AND CONNECTOR 

OK: Go To Next Step 

1. Disconnect the courtesy lamp switch and body ECU connectors.
2. Check the continuity between the terminals of the courtesy lamp switch (D12) and body ECU (B5) connectors.

Fig 7: Identifying Courtesy Lamp Switch (D12) And Body ECU (B5) Connectors Terminals

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Fig 8: STANDARD

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NG: REPAIR OR REPLACE HARNESS AND CONNECTOR 

OK: REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSY