Power Seat Position Is Not Memorized

SEAT: REAR POWER SEAT CONTROL SYSTEM: Power Seat Position is not Memorized
- Power Seat Position is not Memorized

DESCRIPTION

When the rear seat memory switch's SET is pressed, each position sensor's value is recorded into the position control ECU.

WIRING DIAGRAM









INSPECTION PROCEDURE

PROCEDURE

1. CHECK REAR POWER SEAT CONTROL FUNCTION

(a) Operate the rear power seat switch and check that each power seat function operates normally.

OK:

Each function operates normally.

NG -- GO TO PROBLEM SYMPTOMS TABLE Problem Symptoms Table
OK -- Continue to next step.

2. CHECK REAR SEAT RETURN FUNCTION

(a) When the rear door is opened, check that the door open linked return operation operates.

OK:

Door open linked return operation operates normally.

NG -- GO TO PROBLEM SYMPTOMS TABLE Problem Symptoms Table
OK -- Continue to next step.

3. CHECK REAR SEAT MEMORY FUNCTION

(a) Perform a memory operation correctly. Check that the buzzer sounds to indicate the completion of the memory operation.

OK:

Seat position is memorized normally.

NG -- READ VALUE USING TECHSTREAM (SEAT MEMORY SWITCH)

OK -- SYSTEM IS OK

4. READ VALUE USING TECHSTREAM (SEAT MEMORY SWITCH)

(a) Check the Data List for proper functioning of the seat memory switch.

Rear Left Seat





Rear Right Seat





OK:

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

Result





E -- INSPECT REAR SEAT MEMORY SWITCH RH

D -- INSPECT REAR SEAT MEMORY SWITCH LH

C -- REPLACE POSITION CONTROL ECU RH Disassembly

B -- REPLACE POSITION CONTROL ECU RH Disassembly

A -- REPLACE POSITION CONTROL ECU LH Disassembly

5. INSPECT REAR SEAT MEMORY SWITCH LH

(a) Remove the memory switch Removal.





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

Standard resistance:





NG -- REPLACE REAR SEAT MEMORY SWITCH LH Removal
OK -- Continue to next step.

6. CHECK HARNESS AND CONNECTOR (REAR DOOR ECU LH - REAR SEAT MEMORY SWITCH LH AND BODY GROUND)

(a) Disconnect the O15 ECU connector.





(b) Disconnect the Q7 switch connector.

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

Standard resistance:





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

OK -- REPLACE REAR DOOR ECU LH Removal

7. INSPECT REAR SEAT MEMORY SWITCH RH

(a) Remove the memory switch Removal.





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

Standard resistance:





NG -- REPLACE REAR SEAT MEMORY SWITCH RH Removal
OK -- Continue to next step.

8. CHECK HARNESS AND CONNECTOR (REAR DOOR ECU RH - REAR SEAT MEMORY SWITCH RH AND BODY GROUND)

(a) Disconnect the O2 ECU connector.





(b) Disconnect the Q2 switch connector.

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

Standard resistance:





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

OK -- REPLACE REAR DOOR ECU RH Removal