Lexus NX: Short in Sensor with Motor Power Supply Circuit (B2658)
DESCRIPTION
This DTC is stored when a power seat motor operates (a position control 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 | Problem with the voltage supplied to the position control sensor. |
|
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 FRONT POWER SEAT SWITCH LH (SLIDE MOTOR CIRCUIT) |
| (a) Measure the voltage according to the value(s) in the table below. Standard Voltage:
|
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| NG | | GO TO STEP 6 |
|
| 4. | CLEAR DTC |
(a) Clear the DTCs.
Click here
|
| 5. | CHECK FOR DTC |
(a) Check for DTCs.
Click here
OK:
DTC B2658 is not output.
| OK | | USE SIMULATION METHOD TO CHECK |
| NG | | REPLACE FRONT POWER SEAT SWITCH LH |
| 6. | CHECK HARNESS AND CONNECTOR (FRONT POWER SEAT SWITCH LH - FRONT SEAT ADJUSTER ASSEMBLY LH [SLIDE MOTOR]) |
(a) Disconnect the g12 front power seat switch LH connector.
(b) Disconnect the g10 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 |
|---|---|---|
| g12-5 (SSRS) - g10-2 (O/P) | Always | Below 1 Ω |
| g12-5 (SSRS) or g10-2 (O/P) - Body ground | Always | 10 kΩ or higher |
| g12-1 (SGND) - g10-3 (GND) | Always | Below 1 Ω |
| g12-1 (SGND) or g10-3 (GND) - Body ground | Always | 10 kΩ or higher |
| NG | | REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
| 7. | REPLACE FRONT POWER SEAT SWITCH LH |
(a) Replace the front seat switch LH with new or known good one.
Click here
|
| 8. | CLEAR DTC |
(a) Clear the DTCs.
Click here
|
| 9. | CHECK FOR DTC |
(a) Check for DTCs.
Click here
OK:
DTC B2658 is not output.
| OK | | END (FRONT POWER SEAT SWITCH LH WAS DEFECTIVE) |
| NG | | REPLACE FRONT SEAT ADJUSTER ASSEMBLY LH |
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