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Home >> Toyota >> 2021 >> Mirai Limited >> Repair and Diagnosis >> Accessories & Equipment >> Seats >> Seats - Service Information (2 Of 3) >> Power Seat Switch >> Inspection [11/2020 - ] >> Procedure

Inspection [11/2020 - ]: Procedure

  1. INSPECT FRONT POWER SEAT SWITCH LH 
    1. w/ Memory:
      1. Measure the resistance according to the value(s) in the table below.
        GTY1018363Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        *a Slide Switch (Front)
        *b Slide Switch (Rear)
        *c Front Vertical Switch (Up)
        *d Front Vertical Switch (Down)
        *e Lifter Switch (Up)
        *f Lifter Switch (Down)
        *g Reclining Switch (Front)
        *h Reclining Switch (Rear)
        *i Lumbar Support Switch (Hold)
        *j Lumbar Support Switch (Release)
        *k Component without harness connected
        (Front Power Seat Switch LH)

        Standard Resistance

        SLIDE SWITCH

        Tester Connection Switch Condition Specified Condition Result
        L34-7 (SLDF) - L34-20 (E) Front Below 1 Ω Ω
        L34-7 (SLDF) - L34-20 (E) OFF 10 kΩ or higher
        L34-6 (SLDR) - L34-20 (E) Rear Below 1 Ω Ω
        L34-6 (SLDR) - L34-20 (E) OFF 10 kΩ or higher
        FRONT VERTICAL SWITCH

        Tester Connection Switch Condition Specified Condition Result
        L34-4 (FUP) - L34-20 (E) Up Below 1 Ω Ω
        L34-4 (FUP) - L34-20 (E) OFF 10 kΩ or higher
        L34-5 (FDWN) - L34-20 (E) Down Below 1 Ω Ω
        L34-5 (FDWN) - L34-20 (E) OFF 10 kΩ or higher
        LIFTER SWITCH

        Tester Connection Switch Condition Specified Condition Result
        L34-3 (LUP) - L34-20 (E) Up Below 1 Ω Ω
        L34-3 (LUP) - L34-20 (E) OFF 10 kΩ or higher
        L34-8 (LDWN) - L34-20 (E) Down Below 1 Ω Ω
        L34-8 (LDWN) - L34-20 (E) OFF 10 kΩ or higher
        RECLINING SWITCH

        Tester Connection Switch Condition Specified Condition Result
        L34-2 (RCLF) - L34-20 (E) Front Below 1 Ω Ω
        L34-2 (RCLF) - L34-20 (E) OFF 10 kΩ or higher
        L34-1 (RCLR) - L34-20 (E) Rear Below 1 Ω Ω
        L34-1 (RCLR) - L34-20 (E) OFF 10 kΩ or higher
        LUMBAR SUPPORT SWITCH

        Tester Connection Switch Condition Specified Condition Result
        L34-14 (H) - L34-20 (E) Hold Below 1 Ω Ω
        L34-14 (H) - L34-20 (E) OFF 10 kΩ or higher
        L34-17 (R) - L34-20 (E) Release Below 1 Ω Ω
        L34-17 (R) - L34-20 (E) OFF 10 kΩ or higher

        If the result is not as specified, replace the front power seat switch LH.

    2. w/o Memory:
      1. Measure the resistance according to the value(s) in the table below.
        GTY1018012Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        *a Slide Switch (Front)
        *b Slide Switch (Rear)
        *c Front Vertical Switch (Up)
        *d Front Vertical Switch (Down)
        *e Lifter Switch (Up)
        *f Lifter Switch (Down)
        *g Reclining Switch (Front)
        *h Reclining Switch (Rear)
        *i Lumbar Support Switch (Hold)
        *j Lumbar Support Switch (Release)
        *k Component without harness connected
        (Front Power Seat Switch LH)

        Standard Resistance

        SLIDE SWITCH

        Tester Connection Switch Condition Specified Condition Result
        L33-4 (SLDF) - L33-6 (B) Front Below 1 Ω Ω
        L33-1 (SLDR) - L33-12 (E) Front Below 1 Ω Ω
        L33-4 (SLDF) - L33-6 (B) OFF Below 1 Ω Ω
        L33-1 (SLDR) - L33-12 (E) OFF Below 1 Ω Ω
        L33-4 (SLDF) - L33-12 (E) Rear Below 1 Ω Ω
        L33-1 (SLDR) - L33-6 (B) Rear Below 1 Ω Ω
        FRONT VERTICAL SWITCH

        Tester Connection Switch Condition Specified Condition Result
        L33-7 (FUP) - L33-6 (B) Up Below 1 Ω Ω
        L33-11 (FDWN) - L33-12 (E) Up Below 1 Ω Ω
        L33-7 (FUP) - L33-6 (B) OFF Below 1 Ω Ω
        L33-11 (FDWN) - L33-12 (E) OFF Below 1 Ω Ω
        L33-7 (FUP) - L33-12 (E) Down Below 1 Ω Ω
        L33-11 (FDWN) - L33-6 (B) Down Below 1 Ω Ω
        LIFTER SWITCH

        Tester Connection Switch Condition Specified Condition Result
        L33-8 (LUP) - L33-6 (B) Up Below 1 Ω Ω
        L33-10 (LDWN) - L33-12 (E) Up Below 1 Ω Ω
        L33-8 (LUP) - L33-6 (B) OFF Below 1 Ω Ω
        L33-10 (LDWN) - L33-12 (E) OFF Below 1 Ω Ω
        L33-8 (LUP) - L33-12 (E) Down Below 1 Ω Ω
        L33-10 (LDWN) - L33-6 (B) Down Below 1 Ω Ω
        RECLINING SWITCH

        Tester Connection Switch Condition Specified Condition Result
        L33-5 (RCLF) - L33-6 (B) Front Below 1 Ω Ω
        L33-3 (RCLR) - L33-12 (E) Front Below 1 Ω Ω
        L33-5 (RCLF) - L33-6 (B) OFF Below 1 Ω Ω
        L33-3 (RCLR) - L33-12 (E) OFF Below 1 Ω Ω
        L33-5 (RCLF) - L33-12 (E) Rear Below 1 Ω Ω
        L33-3 (RCLR) - L33-6 (B) Rear Below 1 Ω Ω
        LUMBAR SUPPORT SWITCH

        Tester Connection Switch Condition Specified Condition Result
        L33-9 (H) - L33-6 (B) Hold Below 1 Ω Ω
        L33-2 (R) - L33-12 (E) Hold Below 1 Ω Ω
        L33-9 (H) - L33-6 (B) OFF Below 1 Ω Ω
        L33-2 (R) - L33-12 (E) OFF Below 1 Ω Ω
        L33-9 (H) - L33-12 (E) Release Below 1 Ω Ω
        L33-2 (R) - L33-6 (B) Release Below 1 Ω Ω

        If the result is not as specified, replace the front power seat switch LH.

  2. INSPECT FRONT POWER SEAT SWITCH RH 
    1. for 8 Way Seat Type:
      1. Measure the resistance according to the value(s) in the table below.
        GTY1018109Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        *a Slide Switch (Front)
        *b Slide Switch (Rear)
        *c Front Vertical Switch (Up)
        *d Front Vertical Switch (Down)
        *e Lifter Switch (Up)
        *f Lifter Switch (Down)
        *g Reclining Switch (Front)
        *h Reclining Switch (Rear)
        *i Component without harness connected
        (Front Power Seat Switch RH)

        Standard Resistance

        SLIDE SWITCH

        Tester Connection Switch Condition Specified Condition Result
        L8-5 (SLDR) - L8-12 (B) Front Below 1 Ω Ω
        L8-2 (SLDF) - L8-6 (E) Front Below 1 Ω Ω
        L8-5 (SLDR) - L8-12 (B) OFF Below 1 Ω Ω
        L8-2 (SLDF) - L8-6 (E) OFF Below 1 Ω Ω
        L8-5 (SLDR) - L8-6 (E) Rear Below 1 Ω Ω
        L8-2 (SLDF) - L8-12 (B) Rear Below 1 Ω Ω
        FRONT VERTICAL SWITCH

        Tester Connection Switch Condition Specified Condition Result
        L8-11 (FUP) - L8-12 (B) Up Below 1 Ω Ω
        L8-7 (FDWN) - L8-6 (E) Up Below 1 Ω Ω
        L8-11 (FUP) - L8-12 (B) OFF Below 1 Ω Ω
        L8-7 (FDWN) - L8-6 (E) OFF Below 1 Ω Ω
        L8-11 (FUP) - L8-6 (E) Down Below 1 Ω Ω
        L8-7 (FDWN) - L8-12 (B) Down Below 1 Ω Ω
        LIFTER SWITCH

        Tester Connection Switch Condition Specified Condition Result
        L8-10 (LUP) - L8-12 (B) Up Below 1 Ω Ω
        L8-8 (LDWN) - L8-6 (E) Up Below 1 Ω Ω
        L8-10 (LUP) - L8-12 (B) OFF Below 1 Ω Ω
        L8-8 (LDWN) - L8-6 (E) OFF Below 1 Ω Ω
        L8-10 (LUP) - L8-6 (E) Down Below 1 Ω Ω
        L8-8 (LDWN) - L8-12 (B) Down Below 1 Ω Ω
        RECLINING SWITCH

        Tester Connection Switch Condition Specified Condition Result
        L8-3 (RCLR) - L8-12 (B) Front Below 1 Ω Ω
        L8-1 (RCLF) - L8-6 (E) Front Below 1 Ω Ω
        L8-3 (RCLR) - L8-12 (B) OFF Below 1 Ω Ω
        L8-1 (RCLF) - L8-6 (E) OFF Below 1 Ω Ω
        L8-3 (RCLR) - L8-6 (E) Rear Below 1 Ω Ω
        L8-1 (RCLF) - L8-12 (B) Rear Below 1 Ω Ω

        If the result is not as specified, replace the front power seat switch RH.

    2. for 4 Way Seat Type:
      1. Measure the resistance according to the value(s) in the table below.
        GTY1018096Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        *a Slide Switch (Front)
        *b Slide Switch (Rear)
        *c Reclining Switch (Front)
        *d Reclining Switch (Rear)
        *e Component without harness connected
        (Front Power Seat Switch RH)

        Standard Resistance

        SLIDE SWITCH

        Tester Connection Switch Condition Specified Condition Result
        L7-4 (SLDF) - L7-6 (B) Front Below 1 Ω Ω
        L7-5 (SLDR) - L7-1 (E) Front Below 1 Ω Ω
        L7-4 (SLDF) - L7-6 (B) OFF Below 1 Ω Ω
        L7-5 (SLDR) - L7-1 (E) OFF Below 1 Ω Ω
        L7-4 (SLDF) - L7-1 (E) Rear Below 1 Ω Ω
        L7-5 (SLDR) - L7-6 (B) Rear Below 1 Ω Ω
        RECLINING SWITCH

        Tester Connection Switch Condition Specified Condition Result
        L7-2 (RCLF) - L7-6 (B) Front Below 1 Ω Ω
        L7-3 (RCLR) - L7-1 (E) Front Below 1 Ω Ω
        L7-2 (RCLF) - L7-6 (B) OFF Below 1 Ω Ω
        L7-3 (RCLR) - L7-1 (E) OFF Below 1 Ω Ω
        L7-2 (RCLF) - L7-1 (E) Rear Below 1 Ω Ω
        L7-3 (RCLR) - L7-6 (B) Rear Below 1 Ω Ω

        If the result is not as specified, replace the front power seat switch RH.