B2658

SEAT: FRONT POWER SEAT CONTROL SYSTEM: B2658: Short in Sensor with Motor Power Supply Circuit
B2658 - Short in Sensor with Motor Power Supply Circuit

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.





WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. CHECK FOR DTC

(a) Clear the DTCs Reading and Clearing Diagnostic Trouble Codes.

(b) Check for DTCs Reading and Clearing Diagnostic Trouble Codes.

OK:

DTC B2658 is not output.

NG -- CHECK HARNESS AND CONNECTOR (FRONT POWER SEAT SWITCH - SLIDE MOTOR)

OK -- USE SIMULATION METHOD TO CHECK How To Proceed With Troubleshooting

2. CHECK HARNESS AND CONNECTOR (FRONT POWER SEAT SWITCH - SLIDE MOTOR)

(a) Disconnect the b5 switch connector.

(b) Disconnect the b1 motor connector.

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

Standard Resistance:





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

3. CHECK FRONT POWER SEAT SWITCH LH (SLIDE MOTOR CIRCUIT)

(a) Disconnect the b1 motor connector.





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

Standard Voltage:





Text in Illustration





NG -- REPLACE FRONT POWER SEAT SWITCH LH Disassembly
OK -- Continue to next step.

4. CHECK HARNESS AND CONNECTOR (FRONT POWER SEAT SWITCH - FRONT VERTICAL MOTOR)

(a) Disconnect the b5 switch connector.

(b) Disconnect the b2 motor connector.

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

Standard Resistance:





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

5. CHECK FRONT POWER SEAT SWITCH LH (FRONT VERTICAL MOTOR CIRCUIT)

(a) Disconnect the b2 motor connector.





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

Standard Voltage:





Text in Illustration





NG -- REPLACE FRONT POWER SEAT SWITCH LH Disassembly
OK -- Continue to next step.

6. CHECK HARNESS AND CONNECTOR (FRONT POWER SEAT SWITCH - LIFTER MOTOR)

(a) Disconnect the b5 switch connector.

(b) Disconnect the b3 motor connector.

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

Standard Resistance:





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

7. CHECK FRONT POWER SEAT SWITCH LH (LIFTER MOTOR CIRCUIT)

(a) Disconnect the b3 motor connector.





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

Standard Voltage:





Text in Illustration





NG -- REPLACE FRONT POWER SEAT SWITCH LH Disassembly
OK -- Continue to next step.

8. CHECK HARNESS AND CONNECTOR (FRONT POWER SEAT SWITCH - RECLINING MOTOR)

(a) Disconnect the b5 switch connector.

(b) Disconnect the f3 motor connector.

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

Standard Resistance:





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

9. CHECK FRONT POWER SEAT SWITCH LH (RECLINING MOTOR CIRCUIT)

(a) Disconnect the f3 motor connector.





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

Standard Voltage:





Text in Illustration





NG -- REPLACE FRONT POWER SEAT SWITCH LH Disassembly
OK -- Continue to next step.

10. CHECK SEPARATE TYPE FRONT SEAT CUSHION SPRING ASSEMBLY LH

(a) Temporarily replace the separate type front seat cushion springs one at a time with a new or normally functioning one Disassembly.

(b) Clear the DTCs Reading and Clearing Diagnostic Trouble Codes.

(c) Check for DTCs Reading and Clearing Diagnostic Trouble Codes.

OK:

DTC B2658 is not output.

NG -- CHECK SEPARATE TYPE FRONT SEATBACK SPRING ASSEMBLY LH

OK -- END (SEPARATE TYPE FRONT SEAT CUSHION SPRING ASSEMBLY LH IS DEFECTIVE)

11. CHECK SEPARATE TYPE FRONT SEATBACK SPRING ASSEMBLY LH

(a) Temporarily replace the separate type front seatbacks springs one at a time with a new or normally functioning one Disassembly.

(b) Clear the DTCs Reading and Clearing Diagnostic Trouble Codes.

(c) Check for DTCs Reading and Clearing Diagnostic Trouble Codes.

OK:

DTC B2658 is not output.

NG -- REPLACE FRONT POWER SEAT SWITCH LH Disassembly

OK -- END (SEPARATE TYPE FRONT SEATBACK SPRING ASSEMBLY LH IS DEFECTIVE)