Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual: 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 |
|
WIRING DIAGRAM
PROCEDURE
| 1. | CLEAR DTC |
(a) Clear the DTCs.
Click here .gif)
|
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| 2. | CHECK FOR DTC |
(a) Check for DTCs.
Click here
OK:
DTC B2658 is not output.
| OK | .gif) | USE SIMULATION METHOD TO CHECK |
|
| 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 |
|
| 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 |
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Lexus RX (RX 350L, RX450h) 2016-{YEAR} Owners Manual
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Lexus RX (RX 350L, RX450h) 2016-{YEAR} Repair Manual
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