Toyota Venza: Short in Sensor with Motor Power Supply Circuit (B2658)

Toyota Venza Service Manual / Seat / Front Power Seat Control System(w/ Memory) / Short in Sensor with Motor Power Supply Circuit (B2658)

DESCRIPTION

This DTC is stored if sensor voltage does not reach the designated voltage while the slide motor is operating.

DTC Code	DTC Detection Condition	Trouble Area
B2658	Malfunction in supply voltage for the seat slide control position sensor	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.

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

(e) Clear the DTC (See page ).

(f) Recheck for DTC B2658.

Result	Proceed to
DTC B2658 is output	A
DTC B2658 is not output	B

USE SIMULATION METHOD TO CHECK

2.	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).

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

REPAIR OR REPLACE HARNESS OR CONNECTOR

3.	CHECK POSITION CONTROL ECU AND SWITCH ASSEMBLY

(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
T11-1 (SGND) - T11-3 (PVCC)	Slide switch on	5.5 to 6.5 V

REPLACE FRONT SEAT FRAME WITH ADJUSTER ASSEMBLY LH

REPLACE POSITION CONTROL ECU AND SWITCH ASSEMBLY

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