DTC B2568: Lock in Back Window Panel Drive Motor RH Circuit: Procedure

1. Remove the sliding roof drive gear assembly (back window motor RH).
   Fig 1: Identifying Sliding Roof Drive Gear Assembly (Back Window Motor RH)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Apply battery voltage and check operation of the back window motor.

   OK

   Measurement Condition	Specified Condition
   Battery positive (+) → Terminal 1 Battery negative (-) → Terminal 3	Motor gear rotates counterclockwise
   Battery positive (+) → Terminal 3 Battery negative (-) → Terminal 1	Motor gear rotates clockwise

3. Connect an electrical tester DC 400 A probe to the wire harness of the motor.
   NOTE:

   Match the arrow mark of the probe with the direction of the current flow.

4. Measure the current according to the value(s) in the table below.
   NOTE:

   Make sure to perform the inspection after the motor cools down sufficiently. Otherwise the result may not meet the specified condition due to protection circuit operation in the motor.

   Standard Current

   Measurement Condition	Specified Condition
   Battery positive (+) → Terminal 3 Battery negative (-) → Terminal 1	Below 4 A

   TEXT IN ILLUSTRATION
   
   

   *1	Component without harness connected (Sliding Roof Drive Gear Assembly)
   *2	Motor Gear
   *3	Clockwise
   *4	Counterclockwise

NG → REPLACE SLIDING ROOF DRIVE GEAR ASSEMBLY (BACK WINDOW MOTOR RH) 

OK: Go to next step 

1. Disconnect the P57 and P55 connectors.
   Fig 2: Identifying P57 & P55 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
   P57-4 (R3R+) - P55-4 (R3R+)	Always	Below 1 Ω
   P57-8 (R3R-) - P55-7 (R3R-)	Always	Below 1 Ω
   P55-4 (R3R+) - P55-7 (R3R-)	Always	10 kΩ or higher
   P57-4 (R3R+) - Body ground	Always	10 kΩ or higher
   P57-8 (R3R-) - Body ground	Always	10 kΩ or higher

   TEXT IN ILLUSTRATION
   
   

   *1	Front view of wire harness connector (to Slide Roof Motor Assembly)
   *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 P57 and P55 connectors.
   Fig 3: Identifying P57 and P55 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
   P57-4 (R3R+) - A1	Always	Below 1 Ω
   P57-8 (R3R-) - A3	Always	Below 1 Ω
   A1 - A3	Always	10 kΩ or higher
   A1 - Body ground	Always	10 kΩ or higher
   A3 - Body ground	Always	10 kΩ or higher

   TEXT IN ILLUSTRATION
   
   

   *1	Component without harness connected (Slide Roof Motor Assembly)

NG → REPLACE SLIDE ROOF MOTOR ASSEMBLY (HARNESS OR CONNECTOR) 

OK → REPLACE SLIDING ROOF CONTROL ECU ASSEMBLY