DTC B2541: Abnormal Luggage Door Drive Motor RH Pulse: 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
   Luggage Pulse/Rh Value	Luggage motor RH pulse/Min.: -4000, Max.: 4000	-4000 to 4000	-

   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 P59 and P53 connectors.
   Fig 1: Identifying P59 & P53 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
   P59-6 (LPRB) - P53-12 (LPRB)	Always	Below 1 Ω
   P59-5 (LPR) - P53-15 (LPR)	Always	Below 1 Ω
   P59-4 (LPRE) - P53-31 (LPRE)	Always	Below 1 Ω
   P53-12 (LPRB) - P53-31 (LPRE)	Always	10 kΩ or higher
   P53-15 (LPR) - P53-31 (LPRE)	Always	10 kΩ or higher
   P53-12 (LPRB) - Body ground	Always	10 kΩ or higher
   P53-15 (LPR) - Body ground	Always	10 kΩ or higher
   P53-31 (LPRE) - Body ground	Always	10 kΩ or higher

   TEXT IN ILLUSTRATION
   
   

   *1	Front view of wire harness connector (to Luggage Compartment Door Hinge Assembly RH)
   *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 P59 and A connectors.
   Fig 2: Identifying P59 & 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
   P59-6 (LPRB) - P59-4 (LPRE)	Always	10 kΩ or higher
   P59-5 (LPR) - P59-4 (LPRE)	Always	10 kΩ or higher
   P59-6 (LPRB) - A-6	Always	Below 1 Ω
   P59-5 (LPR) - A-5	Always	Below 1 Ω
   P59-4 (LPRE) - A-4	Always	Below 1 Ω

   TEXT IN ILLUSTRATION
   
   

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

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

OK: Go to next step 

1. Reconnect the P53 and P59 connectors.
   Fig 3: Identifying Q35 & Q45 Connectors

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Disconnect the A connector.
3. Measure the voltage according to the value(s) in the table below.

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   A-6 - A-4	Always	6 to 10 V

   TEXT IN ILLUSTRATION
   
   

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

NG → REPLACE SLIDING ROOF CONTROL ECU ASSEMBLY 

OK → REPLACE LUGGAGE DOOR DRIVE GEAR ASSEMBLY RH (LUGGAGE MOTOR RH)