DTC B255D: Luggage Door Closer Neutral Position Switch LH Abnormal Operation: Procedure

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG).
3. Turn the Techstream on.
4. Enter the following menus: Body Electrical / Retractable Hardtop / Data List.
5. Read the Data List according to the display on the Techstream.
   RETRACTABLE HARDTOP (SLIDING ROOF CONTROL ECU ASSEMBLY)
   
   

   Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
   LH Closer Position SW	Closer position switch LH signal/ON or OFF	ON: Closer position switch LH on (luggage door fully closed) OFF: Closer position switch LH off (luggage door not fully closed)	-

   OK

   The Techstream display changes according to condition as shown in the table.

NG → See step   2 

OK → REPLACE SLIDING ROOF CONTROL ECU ASSEMBLY 

1. Disconnect the Q42 and Q43 connectors.
2. Check the on/off condition of the position switch built in the luggage door closer assembly LH.
3. Confirm that the position switch changes when battery voltage is applied to the luggage door closer assembly LH motor side connector.
   Fig 1: Identifying Q42 & Q43 Connectors

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard

   Position Switch Condition	Condition	Specified Condition
   Position Switch ON	Battery positive (+) → Terminal 2 Battery negative (-) → Terminal 1	Position switch changes to off
   Position Switch OFF	Battery positive (+) → Terminal 1 Battery negative (-) → Terminal 2	Position switch changes to on

   NOTE:

   As soon as operation of the position switch is checked, disconnect the battery.

   TEXT IN ILLUSTRATION
   
   

   *1	Component without harness connected (Luggage Compartment Door Hinge Assembly LH (Luggage Door Closer Assembly LH))
   *2	Luggage Compartment Door Hinge Assembly LH (Position Switch)

NG → REPLACE LUGGAGE COMPARTMENT DOOR HINGE ASSEMBLY LH (LUGGAGE DOOR CLOSER ASSEMBLY LH) 

OK: Go to next step 

1. Disconnect the Q42, Q43 and Q36 connectors.
   Fig 2: Identifying Q42, Q43 & Q36 Connectors

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

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   Q42-6 (LCLS) - Q36-7 (LCLS)	Always	Below 1 Ω
   Q36-7 (LCLS) - Body ground	Always	10 kΩ or higher
   Q43-2 (LCLE) - Body ground	Always	Below 1 Ω

   TEXT IN ILLUSTRATION
   
   

   *1	Front view of wire harness connector (to Luggage Compartment Door Hinge Assembly LH)
   *2	Front view of wire harness connector (to Sliding Roof Control ECU Assembly)

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Disconnect the Q42, Q43 and A connectors.
   Fig 3: Identifying Q42, Q43 & A Connectors

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

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   Q43-2 (LCLE) - A-1	Always	Below 1 Ω
   Q42-6 (LCLS) - A-2	Always	Below 1 Ω
   Q42-6 (LCLS) - Body ground	Always	10 kΩ or higher

   TEXT IN ILLUSTRATION
   
   

   *1	Component without harness connected (Luggage Compartment Door Hinge Assembly LH)

NG → REPLACE LUGGAGE COMPARTMENT DOOR HINGE ASSEMBLY LH (HARNESS OR CONNECTOR) 

OK → REPLACE SLIDING ROOF CONTROL ECU ASSEMBLY