Seatback Mat Does Not Operate

SEAT: SEAT VIBRATION SYSTEM: Seatback Mat does not Operate

Seatback Mat does not Operate

DESCRIPTION

The seat vibration module receives power from the battery, and operates the rear seatback mat. Also, the seat vibration module and seat vibrator switch are controlled through LIN communication signals. If an error is detected, all system operations stop and only SW1 can be operated (all other switches cannot be operated). After the error is corrected, the system enters stop mode.






WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. CHECK BLINKING CONDITION OF LED7
(a) 5 seconds after the seat vibrator switch SW1 is pressed, check if LED7 blinks.

Result





B -- CHECK BLINKING CONDITION OF LED6
A -- Continue to next step.

2. CHECK HARNESS AND CONNECTOR (SEAT VIBRATOR MODULE - BATTERY AND BODY GROUND)




(a) Disconnect the S29 seat vibrator module connector.
(b) Measure the voltage and resistance according to the values in the table below.
Standard voltage:






Standard resistance:






NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- REPLACE SEAT VIBRATOR MODULE ASSEMBLY
3. CHECK BLINKING CONDITION OF LED6
(a) 5 seconds after the seat vibrator switch SW1 is pressed, check if LED6 blinks.

Result





B -- CHECK SEAT VIBRATOR SWITCH
A -- Continue to next step.

4. CHECK HARNESS AND CONNECTOR (SEAT VIBRATOR SWITCH - BATTERY AND BODY GROUND)




(a) Disconnect the Y2 switch connector.
(b) Measure the voltage and resistance according to the values in the table below.
Standard voltage:






Standard resistance:






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

5. CHECK HARNESS AND CONNECTOR (SEAT VIBRATOR SWITCH - SEAT VIBRATOR MODULE)




(a) Disconnect the S29 seat vibrator module connector.
(b) Disconnect the Y2 switch connector.
(c) Measure the resistance according to the values in the table below.
Standard resistance:






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

6. CHECK SEAT VIBRATOR SWITCH (OPERATION)
(a) Replace the seat vibrator switch with a new or normally operating one. Perform an operation inspection.
OK:
Seatback mat operates normally.
NG -- REPLACE SEAT VIBRATOR MODULE ASSEMBLY
OK -- END (SEAT VIBRATOR SWITCH IS DEFECTIVE)
7. CHECK SEAT VIBRATOR SWITCH
(a) When the seat vibrator switch's air operation is selected, check that the respective seat vibrator switch LEDs illuminate.

Result





B -- CHECK BLINKING CONDITION OF LED8
A -- Continue to next step.

8. CHECK SEAT VIBRATOR MODULE ASSEMBLY
(a) Replace the seat vibrator module with a new or normally operating one. Perform an operation inspection.
OK:
Seatback mat operates normally.
NG -- REPLACE SEAT VIBRATOR MODULE ASSEMBLY
OK -- Continue to next step.

9. CHECK AIR HOSE
(a) Replace the air hose with a new or normally operating one. Perform an operation inspection.
OK:
Seatback mat operates normally.
NG -- REPLACE AIR HOSE
OK -- Continue to next step.

10. CHECK REAR SEATBACK MAT
(a) Perform the Active Test on the rear seatback mat Operation Check.
OK:
Rear seatback mat operates normally.
NG -- REPLACE REAR SEATBACK MAT
OK -- SYSTEM IS OK
11. CHECK BLINKING CONDITION OF LED8
(a) 5 seconds after the seat vibrator switch SW1 is pressed, check if LED8 blinks.

Result





A -- REPLACE SEAT VIBRATOR MODULE ASSEMBLY
B -- Continue to next step.

12. CHECK SEAT VIBRATOR SWITCH
(a) Perform the Active Test on the seat vibrator switch Operation Check.
OK:
All switches on seat vibrator switch operate normally.
NG -- REPLACE SEAT VIBRATOR SWITCH
OK -- REPLACE SEAT VIBRATOR MODULE ASSEMBLY