Inspection Procedure

1. 5 seconds after the seat vibrator switch SW1 is pressed, check if LED7 blinks.

   Result 

   RESULT CHART
   
   

   Result	Proceed to
   Blinks	A
   Does not blink	B

B: Go to step  3

A: Go to next step 

1. Disconnect the S29 seat vibrator module connector.
2. Measure the voltage and resistance according to the values in the table below.

   Standard Voltage 

   VOLTAGE SPECIFIED CONDITIONS
   
   

   Tester Connection	Switch Condition	Specified Condition
   S29-1 (IG) - Body ground	Engine switch on (IG)	11 to 14 V

   Fig 1: Identifying S29 Seat Vibrator Module Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard Resistance 

   RESISTANCE SPECIFIED CONDITION
   
   

   Tester Connection	Condition	Specified Condition
   S29-8 (GND) - Body ground	Always	Below 1 Ω

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: REPLACE SEAT VIBRATOR MODULE ASSEMBLY  (See REMOVAL  )

1. 5 seconds after the seat vibrator switch SW1 is pressed, check if LED6 blinks.

   Result 

   RESULT CHART
   
   

   Result	Proceed to
   Blinks	A
   Does not blink	B

B: Go to step  7

A: Go to next step 

1. Disconnect the Y2 switch connector.
2. Measure the voltage and resistance according to the values in the table below.

   Standard Voltage 

   VOLTAGE SPECIFIED CONDITIONS
   
   

   Tester Connection	Switch Condition	Specified Condition
   Y2-1 (IG) - Body ground	Engine switch on (IG)	11 to 14 V

   Fig 2: Identifying Y2 Switch Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard Resistance 

   RESISTANCE SPECIFIED CONDITION
   
   

   Tester Connection	Condition	Specified Condition
   Y2-5 (GND) - Body ground	Always	Below 1 Ω

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Disconnect the S29 seat vibrator module connector.
2. Disconnect the Y2 switch connector.
3. Measure the resistance according to the values in the table below.

   Standard Resistance 

   RESISTANCE SPECIFIED CONDITION
   
   

   Tester Connection	Condition	Specified Condition
   Y2-3 (MPX) - S29-3 (LIN)	Always	Below 1 Ω

   Fig 3: Identifying S29 Seat Vibrator Module And Y2 Switch Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. 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  (See REMOVAL  )

OK: END (SEAT VIBRATOR SWITCH IS DEFECTIVE) 

1. When the seat vibrator switch's air operation is selected, check that the respective seat vibrator switch LEDs illuminate.

   Result 

   RESULT CHART
   
   

   Result	Proceed to
   Illuminate	A
   Do not illuminate	B

B: Go to step  11

A: Go to next step 

1. 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  (See REMOVAL  )

OK: Go to next step 

1. Replace the air hose with a new or normally operating one. Perform an operation inspection.

   OK: Seatback mat operates normally. 

NG: REPLACE AIR HOSE  (See REMOVAL  )

OK: Go to next step 

1. Perform the Active Test on the rear seatback mat (see OPERATION CHECK  ).

   OK: Rear seatback mat operates normally. 

NG: REPLACE REAR SEATBACK MAT  (See DISASSEMBLY  )

OK: SYSTEM IS OK 

1. 5 seconds after the seat vibrator switch SW1 is pressed, check if LED8 blinks.

   Result 

   RESULT CHART
   
   

   Result	Proceed to
   Blinks	A
   Does not blink	B

A: REPLACE SEAT VIBRATOR MODULE ASSEMBLY  (See REMOVAL  )

B: Go to next step 

1. Perform the Active Test on the seat vibrator switch (see OPERATION CHECK  ).

   OK: All switches on seat vibrator switch operate normally. 

NG: REPLACE SEAT VIBRATOR SWITCH 

OK: REPLACE SEAT VIBRATOR MODULE ASSEMBLY  (See REMOVAL  )