Wireless Transmitter Memory Function Does Not Operate
SEAT: FRONT POWER SEAT CONTROL SYSTEM (w/ Memory): Wireless Transmitter Memory Function does not Operate
- Wireless Transmitter Memory Function does not Operate
DESCRIPTION
With the power switch off and the driver door closed, pressing the manual lock or unlock switch on the multiplex network master switch assembly while holding a seat memory switch (M1 switch, M2 switch or M3 switch) will register the transmitter recognition code into the seat memory switch that was pressed. After the registration is completed, the answer back buzzer sounds.
NOTICE:
* The seat position will not be recorded if the SET switch and 2 or more of the seat memory switches (for example, M1 switch and M2 switch) are pressed simultaneously.
* If a memorizing operation has failed, release all switches. The seat memory function does not operate unless the switches are released.
INSPECTION PROCEDURE
PROCEDURE
1. CHECK CAN COMMUNICATION SYSTEM
(a) Use the Techstream to check if the CAN communication system is functioning normally Diagnosis System.
OK:
CAN communication DTC is not output.
NG -- GO TO CAN COMMUNICATION SYSTEM How to Proceed With Troubleshooting
OK -- Continue to next step.
2. CHECK POWER DOOR LOCK CONTROL SYSTEM
(a) Check the manual lock/unlock function by using the multiplex network master switch assembly Operation Check.
OK:
Manual lock/unlock function operates normally.
NG -- GO TO POWER DOOR LOCK CONTROL SYSTEM How To Proceed With Troubleshooting
OK -- Continue to next step.
3. CHECK SMART ACCESS SYSTEM WITH PUSH-BUTTON START (for Start Function)
(a) Check that the hybrid control system starts normally when the power switch is pressed with carrying the key and the brake pedal depressed Operation Check.
OK:
Hybrid control system starts normally.
NG -- GO TO SMART ACCESS SYSTEM WITH PUSH-BUTTON START (for Start Function) How To Proceed With Troubleshooting
OK -- Continue to next step.
4. CHECK SEAT POSITION MEMORY FUNCTION
(a) Perform a seat position memory function Operation Check.
(b) Check that the buzzer sounds for 0.5 seconds to indicate the completion of the seat position memory function.
NOTICE:
* The seat position will not be recorded if the SET switch and 2 or more of the seat memory switches (for example, M1 switch and M2 switch) are pressed simultaneously.
* If a memorizing operation has failed, release all switches. The seat memory function does not operate unless the switches are released.
OK:
Seat position memory function operates normally.
NG -- GO TO OTHER FLOW CHART (Power Seat Position is not Memorized) Power Seat Position Is Not Memorized
OK -- Continue to next step.
5. CHECK SEAT POSITION RESTORING FUNCTION
(a) Perform a seat position restoring function Operation Check.
(b) Check that the buzzer sounds for 0.1 seconds and the seat automatically moves to the memorized position.
NOTICE:
* The seat position will not return to the memorized position if 2 or more of the seat memory switches (for example, M1 switch and M2 switch) are pressed simultaneously.
* If a restoring operation has failed, release all switches. The seat memory restoring function does not operate unless the switches are released.
OK:
Seat position restoring function operates normally.
NG -- GO TO OTHER FLOW CHART (Power Seat does not Return to Memorized Position) Power Seat Does Not Return to Memorized Position
OK -- Continue to next step.
6. READ VALUE USING TECHSTREAM (DRIVER DOOR COURTESY SWITCH)
(a) Connect the Techstream to the DLC3.
(b) Turn the power switch on (IG).
(c) Turn the Techstream on.
(d) Enter the following menus: Body Electrical / Main Body / Data List.
(e) Read the Data List according to the display on the Techstream.
Main Body (Main Body ECU (Multiplex Network Body ECU))
OK:
ON or OFF appears on the screen according to the driver door condition.
NG -- GO TO LIGHTING SYSTEM (Door Courtesy Switch Circuit) Door Courtesy Switch Circuit
OK -- Continue to next step.
7. CHECK MEMORY CALL REGISTRATION FUNCTION
(a) When the following conditions are met, press the manual lock or unlock switch on the multiplex network master switch assembly.
* Power switch is off
* Press and hold the M1, M2 or M3 seat memory switch
* Driver door closed
* Carry the key
(b) Check that the buzzer sounds for 0.5 seconds to indicate the completion of the memory call registration function Operation Check.
OK:
Buzzer sounds normally.
NG -- REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)
OK -- Continue to next step.
8. READ VALUE USING TECHSTREAM (MEMORY CALL REGISTRATION)
(a) Connect the Techstream to the DLC3.
(b) Turn the power switch on (IG).
(c) Turn the Techstream on.
(d) Enter the following menus: Body Electrical / Main Body / Data List.
(e) Read the Data List according to the display on the Techstream.
Main Body (Main Body ECU (Multiplex Network Body ECU))
OK:
On the Techstream display, it is confirmed that the memory call has been registered.
NG -- REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) Removal
OK -- Continue to next step.
9. CHECK MEMORY CALL FUNCTION
(a) Turn the power switch off.
(b) Close and lock all doors.
(c) Unlock the driver door by pressing the unlock switch of the memory call registered key or touching the driver door outside handle with holding the memory call registered key.
(d) Open the driver door and check that the driver seat moves to the memorized position Operation Check.
OK:
Driver seat moves to the memorized position.
NG -- GO TO OTHER FLOW CHART (Wireless-linked Return Function does not Operate) Wireless-Linked Return Function Does Not Operate
OK -- USE SIMULATION METHOD TO CHECK How To Proceed With Troubleshooting
10. REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)
(a) Replace the main body ECU (multiplex network body ECU) Removal.
NEXT -- Continue to next step.
11. CHECK MEMORY CALL REGISTRATION FUNCTION
(a) When the following conditions are met, press the manual lock or unlock switch on the multiplex network master switch assembly.
* Power switch is off
* Press and hold the M1, M2 or M3 seat memory switch
* Driver door closed
* Carry the key
(b) Check that the buzzer sounds for 0.5 seconds to indicate the completion of the memory call registration function Operation Check.
OK:
Buzzer sounds normally.
NG -- REPLACE POSITION CONTROL ECU AND SWITCH ASSEMBLY
OK -- END (MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) WAS DEFECTIVE)
12. REPLACE POSITION CONTROL ECU AND SWITCH ASSEMBLY
(a) Replace the position control ECU and switch assembly Removal.
NEXT -- Continue to next step.
13. CHECK MEMORY CALL REGISTRATION FUNCTION
(a) When the following conditions are met, press the manual lock or unlock switch on the multiplex network master switch assembly.
* Power switch is off
* Press and hold the M1, M2 or M3 seat memory switch
* Driver door closed
* Carry the key
(b) Check that the buzzer sounds for 0.5 seconds to indicate the completion of the memory call registration function Operation Check.
OK:
Buzzer sounds normally.
NG -- REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) Removal
OK -- END (POSITION CONTROL ECU AND SWITCH ASSEMBLY WAS DEFECTIVE)