DTC B2651: Reclining Sensor Malfunction (07/2015 -): Procedure

1. Check for DTCs (Refer to DTC CHECK / CLEAR (07/2015 -) ).

   Result

   Result	Proceed to
   DTC is not output	A
   DTC output	B

Result:  A

A 

USE SIMULATION METHOD TO CHECK 

(Refer to HOW TO PROCEED WITH TROUBLESHOOTING (07/2015 -) )

Result:  B

B 

See step  2

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 / Passenger Seat / Active Test.
5. Perform the Active Test according to the display on the Techstream.
   PASSENGER SEAT
   
   

   Tester Display	Test Part	Control Ranger	Diagnostic Note
   Seat Reclining	Seat reclining operation	OFF/Front/Rear	-

   OK

   Motor operates normally.

Result:  NG

NG 

See step  6

Result:  OK

OK 

See step  3

1. Disconnect the Y2 reclining motor connector.
2. Measure the voltage according to the value(s) in the table below.

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   Y2-2 - Y2-3	Reclining switch on	4.8 to 5.1 V

Result:  NG

NG 

See step  5

Result:  OK

OK 

See step  4

1. Reconnect the Y2 reclining motor connector.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

2. Measure the voltage according to the value(s) in the table below.

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   Y2-2 - Body ground	Reclining switch on	4.5 to 4.8 V

   TEXT IN ILLUSTRATION
   
   

   *a	Component with harness connected (Reclining Motor (Separate Type Front Seatback Spring Assembly)

Result:  OK

OK 

REPLACE FRONT POWER SEAT SWITCH RH 

(Refer to REMOVAL (07/2015 -) )

Result:  NG

NG 

REPLACE RECLINING MOTOR (SEPARATE TYPE FRONT SEATBACK SPRING ASSEMBLY) 

(Refer to REMOVAL (07/2015 -) )

1. Disconnect the W10 front power seat switch RH connector.
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   W10-11 (SSRR) - Y2-2	Always	Below 1 Ω
   W10-1 (SGND) - Y2-3	Always	Below 1 Ω
   W10-11 (SSRR) - Body ground	Always	10 kΩ or higher
   W10-1 (SGND) - Body ground	Always	10 kΩ or higher

Result:  OK

OK 

REPLACE FRONT POWER SEAT SWITCH RH 

(Refer to REMOVAL (07/2015 -) )

Result:  NG

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

1. Disconnect the Y2 reclining motor connector.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

2. Check if the seatback moves smoothly when the battery is connected to the reclining motor connector terminals.

   OK

   Condition	Operational Direction
   Battery positive (+) → Terminal 4 Battery negative (-) → Terminal 1	Seatback moves forward
   Battery positive (+) → Terminal 1 Battery negative (-) → Terminal 4	Seatback moves backward

   TEXT IN ILLUSTRATION
   
   

   *a	Component without harness connected (Reclining Motor (Separate Type Front Seatback Spring Assembly)

Result:  NG

NG 

REPLACE RECLINING MOTOR (SEPARATE TYPE FRONT SEATBACK SPRING ASSEMBLY) 

(Refer to REMOVAL (07/2015 -) )

Result:  OK

OK 

See step  7

1. Disconnect the W9 front power seat switch RH connector.
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   W9-9 (RCL+) - Y2-4	Always	Below 1 Ω
   W9-11 (RCL-) - Y2-1	Always	Below 1 Ω
   W9-9 (RCL+) - Body ground	Always	10 kΩ or higher
   W9-11 (RCL-) - Body ground	Always	10 kΩ or higher

Result:  OK

OK 

REPLACE FRONT POWER SEAT SWITCH RH 

(Refer to REMOVAL (07/2015 -) )

Result:  NG

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR