Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual: Short in Sensor with Motor Power Supply Circuit (B2658)

Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual / Vehicle Interior / Seat / Front Power Seat Control System (w/ Memory) / Short in Sensor with Motor Power Supply Circuit (B2658)

DESCRIPTION

This DTC is stored when the slide motor is being operated (the slide motor position sensor is being supplied with power) and the power supply voltage does not rise to the specified value.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

B2658

Short in Sensor with Motor Power Supply Circuit

Slide motor position sensor power supply voltage is low
  • Position control ECU and switch assembly LH
  • Slide motor (Front seat adjuster assembly LH)
  • Wire harness or connector

WIRING DIAGRAM

PROCEDURE

1.

CLEAR DTC

(a) Clear the DTCs.

Click here

Body Electrical > Driver Seat > Clear DTCs
NEXT

2.

CHECK FOR DTC

(a) Check for DTCs.

Click here

Body Electrical > Driver Seat > Trouble Codes

OK:

DTC B2658 is not output.

OK

USE SIMULATION METHOD TO CHECK

NG

3.

CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU AND SWITCH ASSEMBLY LH - SLIDE MOTOR (FRONT SEAT ADJUSTER ASSEMBLY LH))

(a) Disconnect the c6 position control ECU and switch assembly LH connector.

(b) Disconnect the c1 slide motor (front seat adjuster assembly LH) connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

c6-5 (SSRS) - c1-2 (O/P)

Always

Below 1 Ω

c6-5 (SSRS) or c1-2 (O/P) - Body ground

Always

10 kΩ or higher

c6-1 (SGND) - c1-3 (GND)

Always

Below 1 Ω

c6-1 (SGND) or c1-3 (GND) - Body ground

Always

10 kΩ or higher
NG

REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

4.

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

(a) Reconnect the c1 slide motor (front seat adjuster assembly LH) connector.

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

Standard Voltage:

Tester Connection

Condition

Specified Condition

c1-2 (O/P) - c1-3 (GND)

Slide switch on

4.8 to 5.1 V
OK

REPLACE FRONT SEAT ADJUSTER ASSEMBLY LH

NG

REPLACE POSITION CONTROL ECU AND SWITCH ASSEMBLY LH

    Slide Sensor Malfunction (B2650)
    DESCRIPTION When the position control ECU and switch assembly LH does not receive a slide motor position sensor signal despite the seat having been moved forward or backward by power seat motor operat ...

    Front Power Seat does not Operate with Front Power Seat Switch
    DESCRIPTION Signals are input into the position control ECU and switch assembly LH. The built-in ECU manages the signals received from the power seat switch, and operates each motor. If the position c ...

    Other materials:

    Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Steering Lock System: Open / Short in Steering Lock ECU (B2781)
    DESCRIPTION The steering lock ECU and steering lock motor are built into the steering lock actuator or upper bracket assembly. The steering lock ECU (steering lock actuator or upper bracket assembly) detects whether the steering lock is in the lock or unlock position by using the lock sensor and unl ...

    Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Lexus Enform System: Confirm Cellular Phone Functionality
    PROCEDURE 1. CHECK CUSTOMER'S CELLULAR PHONE COMPATIBILITY (a) Check if the cellular phone is compatible (Refer to http://www.lexus.com/MobileLink/). Result Proceed to Cellular phone is compatible. A Cellular phone is not compatible. B HINT: It is important to check the ...

    Lexus RX (RX 350L, RX450h) 2016-{YEAR} Owners Manual

    Lexus RX (RX 350L, RX450h) 2016-{YEAR} Repair Manual

    © 2025 Copyright www.lexusrx.net
    0.0142