Inspection Procedure

1. Connect a Techstream to the DLC3.
2. Turn the ignition switch ON.
3. Turn the tester on.
4. Enter the following menus: Body Electrical / Main Body / Data List.
5. According to the display on tester, read on the "Data List".

   Main Body 

   DATA LIST - MAIN BODY
   
   

   Tester Display	Measurement Item/Range	Normal Condition
   Door Key SW-Lock	Driver door lock/unlock switch lock signal (Key-linked lock switch) / ON or OFF	ON Driver side door key cylinder is turned to lock position OFF Driver side door key cylinder is not turned
   Door Key SW-Unlock	Driver door lock/unlock switch unlock signal (Key-linked unlock switch) /ON or OFF	ON Driver side door key cylinder is turned to unlock position OFF Driver side door key cylinder is not turned
   D Door Key SW-UL	Driver door lock/unlock switch unlock signal (2 step key-linked unlock switch) / ON or OFF	ON Driver side door key cylinder is turned to unlock position OFF Driver side door key cylinder is not turned

   OK: The display is as specified in the normal condition column. 

NG: Go to step 2 

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

1. Remove the front door lock LH (see REMOVAL  ).
2. Measure the resistance according to the value(s) in the table below.

   Standard resistance 

   RESISTANCE SPECIFICATION
   
   

   Tester Connection	Switch Condition	Specified Condition
   7 (E) - 9 (L)	ON (Door lock set to LOCK)	Below 1 Ω
   7 (E) - 9 (L) 7 (E) - 10 (UL)	OFF (Free)	10 kΩ or higher
   7 (E) - 10 (UL)	ON (Door lock set to UNLOCK)	Below 1 Ω

3. Reinstall the front door lock LH (see INSTALLATION  ).

NG: REPLACE FRONT DOOR LOCK LH  (See REMOVAL  )

Fig 1: Inspecting Front Door Lock LH (Door Key Lock And Unlock Switch)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: Go to Next Step 

1. Disconnect the J4 front door lock LH connector.
2. Disconnect the F38 and 4H main body ECU (instrument panel junction block) connectors.
   Fig 2: Identifying Main Body ECU And Front Door Lock Connector Terminals

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

   Standard resistance 

   RESISTANCE SPECIFICATION
   
   

   Tester Connection	Condition	Specified Condition
   J4-9 (L) - 4H-7 (L2)	Always	Below 1 Ω
   J4-10 (UL) - F38-14 (UL3)
   J4-7 (E) - Body ground
   J4-9 (L) - Body ground	Always	10 kΩ or higher
   J4-10 (UL) - Body ground

4. Reconnect the front door lock LH connector.
5. Reconnect the main body ECU (instrument panel junction block) connectors.

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK : REPLACE MAIN BODY ECU