Toyota Venza manuals

Toyota Venza: Slide Sensor Malfunction (B2650)

DESCRIPTION

When the position control ECU and switch assembly does not receive a sensor signal despite forward or backward movement of seat by power seat motor operation, this DTC is output.

DTC Code

DTC Detection Condition

Trouble Area

B2650

The forward and backward lock detection position of the sensor is the same.

  • Position control ECU and switch assembly
  • Slide motor (front seat frame with adjuster assembly LH)
  • Wire harness or connector

WIRING DIAGRAM


PROCEDURE

1.

CHECK FOR DTC

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(c) Turn the Techstream on.

(d) Enter the following menus: Body Electrical / Driver Seat / Trouble Codes.

(e) Clear the DTC (See page ).


(f) Recheck for DTC B2650.

Result

Proceed to

DTC B2650 is output

A

DTC B2650 is not output

B


B

USE SIMULATION METHOD TO CHECK


A

2.

PERFORM ACTIVE TEST USING TECHSTREAM

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

(b) Perform the Active Test according to the display on the Techstream.

Driver Seat

Tester Display

Test Part

Control Range

Diagnostic Note

Seat Slide Operation

Seat sliding operation

OFF/Front/Rear

-

OK:

Motor operates normally.


NG

GO TO STEP 5


OK

3.

CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU AND SWITCH ASSEMBLY - SLIDE MOTOR)

(a) Disconnect the T11 the position control ECU and switch assembly connector.

(b) Disconnect the T12 the slide motor (front seat frame with adjuster assembly LH) connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

T11-3 (PVCC) - T12-5 (VCC)

Always

Below 1 Ω

T11-2 (SSRS) - T12-2 (O/P)

Always

Below 1 Ω

T11-1 (SGND) - T12-6 (GND)

Always

Below 1 Ω

T11-3 (PVCC) - Body ground

Always

10 kΩ or higher

T11-2 (SSRS) - Body ground

Always

10 kΩ or higher

T11-1 (SGND) - Body ground

Always

10 kΩ or higher


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR


OK

4.

CHECK POSITION CONTROL ECU AND SWITCH ASSEMBLY (SLIDE MOTOR CIRCUIT)

(a) Reconnect the T11 the position control ECU and switch assembly connector.

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

Standard Voltage:

Tester Connection

Condition

Specified Condition

T12-5 (VCC) - T12-6 (GND)

Slide switch on

5.5 to 6.5 V


OK

REPLACE FRONT SEAT FRAME WITH ADJUSTER ASSEMBLY LH


NG

REPLACE POSITION CONTROL ECU AND SWITCH ASSEMBLY

5.

INSPECT FRONT SEAT FRAME WITH ADJUSTER ASSEMBLY LH

(a) Disconnect the T12 the slide motor (front seat frame with adjuster assembly LH) connector.

(b) Check if the seat frame moves smoothly when the battery is connected to the slide motor connector terminals.

OK:

Condition

Operational Direction

Battery positive (+) → Terminal 3

Battery negative (-) → Terminal 4

Forward

Battery positive (+) → Terminal 4

Battery negative (-) → Terminal 3

Backward

Text in Illustration

*a

Component without harness connected

(Slide Motor (Front Seat Frame with Adjuster Assembly LH))



NG

REPLACE FRONT SEAT FRAME WITH ADJUSTER ASSEMBLY LH


OK

6.

CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU AND SWITCH ASSEMBLY - SLIDE MOTOR)

(a) Disconnect the T10 the position control ECU and switch assembly connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

T10-2 (SLD+) - T12-3 (FWD)

Always

Below 1 Ω

T10-4 (SLD-) - T12-4 (BACK)

Always

Below 1 Ω

T10-2 (SLD+) - Body ground

Always

10 kΩ or higher

T10-4 (SLD-) - Body ground

Always

10 kΩ or higher


OK

REPLACE POSITION CONTROL ECU AND SWITCH ASSEMBLY


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

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