B2651

SEAT: FRONT POWER SEAT CONTROL SYSTEM (w/ Memory): B2651: Reclining Sensor Malfunction
B2651 - Reclining Sensor Malfunction

DESCRIPTION

When the front power seat switch does not receive a sensor signal despite forward or backward movement of the seatback by power seat motor operation, this DTC is stored.





WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. PERFORM ACTIVE TEST USING TECHSTREAM (POWER SEAT MOTOR FUNCTION)

(a) Connect the Techstream to the DLC3.

(b) Turn the engine switch on (IG).

(c) Turn the Techstream on.

(d) Enter the following menus: Body Electrical / Driver Seat / Active Test.

(e) According to the display on the Techstream, perform the Active Test.

Driver Seat





OK:

Motor operates normally.

NG -- INSPECT SEPARATE TYPE FRONT SEATBACK SPRING ASSEMBLY LH (RECLINING MOTOR)
OK -- Continue to next step.

2. CHECK FRONT POWER SEAT SWITCH LH (RECLINING MOTOR CIRCUIT)

(a) Disconnect the d3 reclining motor connector.





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

Standard Voltage:





Text in Illustration





(c) Reconnect the reclining motor connector.

NG -- CHECK HARNESS AND CONNECTOR (FRONT POWER SEAT SWITCH - RECLINING MOTOR)
OK -- Continue to next step.

3. CHECK SEPARATE TYPE FRONT SEATBACK SPRING ASSEMBLY LH (RECLINING MOTOR)

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





Standard Voltage:





Text in Illustration





NG -- REPLACE SEPARATE TYPE FRONT SEATBACK SPRING ASSEMBLY LH Disassembly

OK -- REPLACE FRONT POWER SEAT SWITCH LH Disassembly

4. CHECK HARNESS AND CONNECTOR (FRONT POWER SEAT SWITCH - RECLINING MOTOR)

(a) Disconnect the Y9 front power seat switch LH connector.

(b) Disconnect the d3 reclining motor connector.

(c) Measure the resistance according to the value(s) in the table below.

Standard Resistance:





(d) Reconnect the reclining motor connector.

(e) Reconnect the front power seat switch LH connector.

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

OK -- REPLACE FRONT POWER SEAT SWITCH LH Disassembly

5. INSPECT SEPARATE TYPE FRONT SEATBACK SPRING ASSEMBLY LH (RECLINING MOTOR)

(a) Remove the separate type front seatback spring assembly LH (reclining motor) Disassembly.





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

OK:





Text in Illustration





(c) Reinstall the separate type front seatback spring assembly LH (reclining motor).

NG -- REPLACE SEPARATE TYPE FRONT SEATBACK SPRING ASSEMBLY LH Disassembly
OK -- Continue to next step.

6. CHECK HARNESS AND CONNECTOR (FRONT POWER SEAT SWITCH - RECLINING MOTOR)

(a) Disconnect the Y8 front power seat switch LH connector.

(b) Disconnect the d3 reclining motor connector.

(c) Measure the resistance according to the value(s) in the table below.

Standard Resistance:





(d) Reconnect the reclining motor connector.

(e) Reconnect the front power seat switch LH connector.

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

OK -- REPLACE FRONT POWER SEAT SWITCH LH Disassembly