One Or More Power Seat Motors Do Not Operate

SEAT: FRONT POWER SEAT CONTROL SYSTEM (w/ Memory): One or more Power Seat Motors do not Operate
- One or more Power Seat Motors do not Operate

DESCRIPTION

When the front power seat switch is operated, a command signal is sent to the position control ECU. The position control ECU then controls the appropriate seat motor as needed. The position control ECU is designed so that a malfunction of the seat memory system will not interfere with manual seat control.

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. READ VALUE USING TECHSTREAM (FRONT POWER SEAT SWITCH)

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(c) Turn the Techstream ON.

(d) Enter the following menus: Body Electrical / Driver seat / Data List.

(e) According to the display on the Techstream, read the Data List.

Driver Seat





OK:

On the Techstream screen, each item changes between ON and OFF according to above chart.

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

2. PERFORM ACTIVE TEST USING TECHSTREAM (POWER SEAT MOTOR)

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(c) Turn the Techstream ON.

(d) Enter the following menus: Body Electrical / Driver Seat / Active Test.

(e) According to the display on the Techstream, perform the Active Test.

Driver Seat





OK:

The power seat motors operate normally.

NG -- INSPECT FRONT SEAT ASSEMBLY LH (POWER SEAT MOTOR)

OK -- REPLACE FRONT POWER SEAT SWITCH LH Disassembly

3. INSPECT FRONT SEAT ASSEMBLY LH (POWER SEAT MOTOR)

(a) Remove the front seat assembly LH Removal.

(b) Check operation of the sliding motor.

(1) Check if the seat moves smoothly when the battery is connected to the sliding motor connector terminals.





OK:





(c) Check operation of the reclining motor.

(1) Check if the seat moves smoothly when the battery is connected to the reclining motor connector terminals.





OK:





(d) Check operation of the front vertical motor.

(1) Check if the seat moves smoothly when the battery is connected to the front vertical motor connector terminals.





OK:





(e) Check operation of the lifter motor.

(1) Check if the seat moves smoothly when the battery is connected to the lifter motor connector terminals.





OK:





NG -- REPLACE FRONT SEAT ASSEMBLY LH Removal
OK -- Continue to next step.

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

(a) Disconnect the X10 switch connector.





(b) Disconnect the X5, X6, X7 and X8 motor connectors.

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

Standard Resistance:





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

OK -- REPLACE FRONT POWER SEAT SWITCH LH Disassembly