Inspection Procedure

1. Connect the Techstream to the DLC3.
2. Turn the ignition switch ON.
3. Turn the tester ON.
4. Select the item below in the Data List and read the display on the tester.

   Theft Warning ECU 

   THEFT WARNING ECU TABLE
   
   

   Item	Test Details
   Trunk Key Unlock	Luggage compartment door unlock detection switch signal ON

   OK: When the luggage compartment door is unlocked, "ON" appears on the screen. 

   HINT:

   The theft warning ECU detects the luggage compartment door lock condition using signals from the luggage compartment door unlock detection switch.

NG: Go to step   2 

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

1. Disconnect the J43 unlock detection switch connector.
2. Measure the resistance.

   Standard resistance 

   TESTER CONNECTION SPECIFIED CONDITION
   
   

   Tester Connection	Condition	Specified Condition
   1-2	The luggage compartment door is locked	10 kΩ or higher
   1-2	The luggage compartment door is unlocked	Below 1 Ω

3. Reconnect the unlock detection switch connector.
Fig 1: Inspecting Luggage Compartment Door Unlock Detection Switch
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPLACE LUGGAGE COMPARTMENT DOOR UNLOCK DETECTION SWITCH 

OK: GO TO NEXT STEP 

1. Disconnect the D26 theft warning ECU and the J43 unlock detection switch connectors.
2. Measure the resistance.

   Standard resistance 

   TESTER CONNECTION SPECIFIED CONDITION
   
   

   Tester Connection	Specified Condition
   D26-6 (LUG) - J43-2	Below 1 Ω
   D26-6 (LUG) or J43-2 - Body ground	10 kΩ or higher

3. Reconnect the theft warning ECU and the unlock detection switch connectors.
Fig 2: Checking Harness & Connector (Theft Warning ECU - Unlock Detection Switch)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: GO TO NEXT STEP 

1. Disconnect the J43 unlock detection switch connector.
2. Measure the resistance.

   Standard resistance 

   TESTER CONNECTION SPECIFIED CONDITION
   
   

   Tester Connection	Specified Condition
   J43-1 - Body ground	Below 1 ohms

3. Reconnect the unlock detection switch connector.
Fig 3: Checking Harness & Connector (Unlock Detection Switch - Body Ground)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: REPLACE THEFT WARNING ECU ASSEMBLY