DTC B2652: Front Vertical 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 Range	Diagnostic Note
   Front Vertical Operation	Seat front vertical operation	OFF/Up/Down	-

   OK

   Motor operates normally.

Result:  NG

NG 

See step  6

Result:  OK

OK 

See step  3

1. Disconnect the W2 front vertical motor connector.
2. Measure the voltage according to the value(s) in the table below.

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   W2-2 - W2-3	Front vertical switch on	4.8 to 5.1 V

Result:  NG

NG 

See step  5

Result:  OK

OK 

See step  4

1. Reconnect the W2 front vertical 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
   W2-2 - Body ground	Front vertical switch on	4.5 to 4.8 V

   TEXT IN ILLUSTRATION
   
   

   *a	Component with harness connected (Front Vertical Motor (Front Seat Adjuster Assembly RH)

Result:  OK

OK 

REPLACE FRONT POWER SEAT SWITCH RH 

(Refer to REMOVAL (07/2015 -) )

Result:  NG

NG 

REPLACE FRONT VERTICAL MOTOR (FRONT SEAT ADJUSTER ASSEMBLY RH) 

(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
   W10-3 (SSFV) - W2-2	Always	Below 1 Ω
   W10-1 (SGND) - W2-3	Always	Below 1 Ω
   W10-3 (SSFV) - 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 W2 front vertical motor connector.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

2. Check if the seat cushion moves smoothly when the battery is connected to the front vertical motor connector terminals.

   OK

   Condition	Operational Direction
   Battery positive (+) → Terminal 4 Battery negative (-) → Terminal 1	Seat cushion moves downward
   Battery positive (+) → Terminal 1 Battery negative (-) → Terminal 4	Seat cushion moves upward

   TEXT IN ILLUSTRATION
   
   

   *a	Component without harness connected (Front Vertical Motor (Front Seat Adjuster Assembly RH)

Result:  NG

NG 

REPLACE FRONT VERTICAL MOTOR (FRONT SEAT ADJUSTER ASSEMBLY RH) 

(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
   W9-8 (FRV+) - W2-1	Always	Below 1 Ω
   W9-5 (FRV-) - W2-4	Always	Below 1 Ω
   W9-8 (FRV+) - Body ground	Always	10 kΩ or higher
   W9-5 (FRV-) - 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