42. Front-rear Slide Origin Point Limit Switch Malfunction

SEAT: AUTO ACCESS SEAT SYSTEM: 42: Front-rear Slide Origin Point Limit Switch Malfunction
42 - Front-rear Slide Origin Point Limit Switch Malfunction

DESCRIPTION

When the power seat switch assembly (front-rear slide switch) or the No. 2 power seat switch assembly (front-rear slide switch) has been operated, the position control ECU assembly outputs driving voltage to drive the power seat motor assembly (front-rear slide motor). When the auto access seat reaches the front-rear slide origin point position, the limit switch assembly (front-rear slide origin point switch) operates to send the origin point position signal to the position control ECU assembly.





WIRING DIAGRAM





INSPECTION PROCEDURE

NOTICE:
* When there is a malfunction in the auto access seat, use independent operation mode to ingress the auto access seat. In this case, until the auto access seat has completed the ingress operation, do not disconnect the cable from the negative battery terminal.
* When there is a malfunction in the auto access seat, before beginning the troubleshooting procedure, first perform initialization Auto Access Seat System and verify the auto access seat operation. If the seat is still malfunctioning, perform the troubleshooting procedure.
* After inspecting and repairing the auto access seat, be sure to perform initialization Auto Access Seat System.
* After performing initialization, be sure to inspect the operation of the auto access seat Operation Check.

PROCEDURE

1. CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU ASSEMBLY)

(a) Disconnect the Q7 limit switch assembly (front-rear slide origin point switch) connector.





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

Standard Voltage:





Text in Illustration





(c) Reconnect the limit switch assembly (front-rear slide origin point switch) connector.

NG -- CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU - FRONT-REAR SLIDE ORIGIN POINT SWITCH)
OK -- Continue to next step.

2. INSPECT LIMIT SWITCH ASSEMBLY (FRONT-REAR SLIDE ORIGIN POINT SWITCH)

(a) Remove the limit switch assembly (front-rear slide origin point switch) Disassembly.





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

Standard Resistance:





Text in Illustration





(c) Reinstall the limit switch assembly (front-rear slide origin point switch).

NG -- REPLACE LIMIT SWITCH ASSEMBLY (FRONT-REAR SLIDE ORIGIN POINT SWITCH) Disassembly
OK -- Continue to next step.

3. CHECK HARNESS AND CONNECTOR (FRONT-REAR SLIDE ORIGIN POINT SWITCH - BODY GROUND)

(a) Disconnect the Q7 limit switch assembly (front-rear slide origin point switch) connector.





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

Standard Resistance:





Text in Illustration





(c) Reconnect the limit switch assembly (front-rear slide origin point switch) connector.

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

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

4. CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU - FRONT-REAR SLIDE ORIGIN POINT SWITCH)

(a) Disconnect the Q2 position control ECU assembly connector.

(b) Disconnect the Q7 limit switch assembly (front-rear slide origin point switch) connector.

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

Standard Resistance:





(d) Reconnect the limit switch assembly (front-rear slide origin point switch) connector.

(e) Reconnect the position control ECU assembly connector.

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

OK -- REPLACE POSITION CONTROL ECU ASSEMBLY Disassembly