LIN COMMUNICATION SYSTEM Seat Vibration System LIN Communication Malfunction

DESCRIPTION

The seat vibrator module receives power from the battery, and operates the seat vibrator. Also, the seat vibrator module and seat vibrator switch are controlled through 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.

Blinking Area Detection Condition / Cause Display
LED6 blinks

  • Communication malfunction between seat vibrator switch and seat vibrator module

  • Abnormal data from seat vibrator switch or seat vibrator module continues for 5 seconds

  • LED blinks in standby mode

  • All LEDs other than LED1 are off
LED7 blinks

  • Malfunction in ECU power supply's IG voltage

  • Condition that IG voltage is 9 V or less, or 16 V or more continues for 2 seconds

  • LED blinks in standby mode

  • All LEDs other than LED1 are off

WIRING DIAGRAM

A01GY2PE06
A01GY2PE05

INSPECTION PROCEDURE

Note

Inspect the fuses for circuits related to this system before performing the following inspection procedure.

PROCEDURE


  1. CHECK BLINKING CONDITION OF LED7


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

      Result
      Result Proceed to
      Blinks A
      Does not blink B

    B

    CHECK BLINKING CONDITION OF LED6 Click here

    A

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


    1. A01H0WYE01

      Disconnect the S29 seat vibrator module connector.

    2. Measure the resistance and voltage according to the values in the table below.

      Standard resistance
      Tester Connection Condition Specified Condition
      S29-8 (GND) - Body ground Always Below 1 Ω
      Standard voltage
      Tester Connection Switch Condition Specified Condition
      S29-1 (IG) - Body ground Power switch off Below 1 V
      S29-1 (IG) - Body ground Power switch on (IG) 11 to 14 V

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE SEAT VIBRATOR MODULE ASSEMBLY Click here

  3. CHECK BLINKING CONDITION OF LED6


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

      Result
      Result Proceed to
      Blinks A
      Does not blink B

    B

    END (SEAT VIBRATOR SWITCH IS DEFECTIVE)

    A

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


    1. A01H1QME04

      Disconnect the z88*1 or Y6*2 switch connector.

      Tech Tips

      *1: except 4-Passenger with Ottoman

      *2: for 4-Passenger with Ottoman

    2. Measure the voltage and resistance according to the values in the table below.

      Standard voltage
      except 4-Passenger with Ottoman
      Tester Connection Switch Condition Specified Condition
      z88-12 (IG) - Body ground Power switch off Below 1 V
      z88-12 (IG) - Body ground Power switch on (IG) 11 to 14 V
      for 4-Passenger with Ottoman
      Tester Connection Switch Condition Specified Condition
      Y6-1 (IG) - Body ground Power switch off Below 1 V
      Y6-1 (IG) - Body ground Power switch on (IG) 11 to 14 V
      Standard resistance
      except 4-Passenger with Ottoman
      Tester Connection Condition Specified Condition
      z88-14 (E) - Body ground Always Below 1 Ω
      for 4-Passenger with Ottoman
      Tester Connection Condition Specified Condition
      Y6-5 (E) - Body ground Always Below 1 Ω

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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

    A01GYFKE06

    1. Disconnect the S29 seat vibrator module connector.

    2. Disconnect the z88*1 or Y6*2 switch connector.

      Tech Tips

      *1: except 4-Passenger with Ottoman

      *2: for 4-Passenger with Ottoman

    3. Measure the resistance according to the values in the table below.

      Standard resistance
      except 4-Passenger with Ottoman
      Tester Connection Condition Specified Condition
      z88-13 (MPX) - S29-3 (LIN) Always Below 1 Ω
      for 4-Passenger with Ottoman
      Tester Connection Condition Specified Condition
      Y6-3 (LIN) - S29-3 (LIN) Always Below 1 Ω

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  6. CHECK SEAT VIBRATOR SWITCH (OPERATION)


    1. Replace the seat vibrator switch with a new or normally functioning one. Perform an operation inspection.

      OK
      Seat vibrator operates normally.

    NG

    REPLACE SEAT VIBRATOR MODULE ASSEMBLY Click here

    OK

    END (SEAT VIBRATOR SWITCH IS DEFECTIVE)