FRONT POWER SEAT CONTROL SYSTEM (w/ Seat Position Memory System) > TERMINALS OF ECU

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INSPECT POSITION CONTROL ECU & SWITCH ASSEMBLY LH

B107920E06

  1. Disconnect the d7 and d8 ECU connectors.

  2. Measure the voltage and resistance of the wire harness side connectors.

    Symbols (Terminal No.)
    		Wiring Color
    		Terminal Description
    		Condition
    		Specified Condition
    IG (d7-4) - GND (d8-1)
    		B - W-B
    		Engine switch signal
    		Engine switch off
    		Below 1 V
    IG (d7-4) - GND (d8-1)
    		B - W-B
    		Engine switch signal
    		Engine switch on (IG)
    		10 to 14 V
    +B (d8-5) - GND (d8-1)
    		L - W-B
    		Power source
    		Always
    		10 to 14 V
    SYSB (d7-8) - GND (d8-1)
    		G - W-B
    		System power source
    		Always
    		10 to 14 V
    GND (d8-1) - Body ground
    		W-B - Body ground
    		Ground
    		Always
    		Below 1 Ω
    If the result is not as specified, there may be a malfunction on the wire harness side.

  3. Reconnect the d7 and d8 ECU connectors.

  4. Measure the voltage of the connector.

    Symbols (Terminal No.)
    		Wiring Color
    		Terminal Description
    		Condition
    		Specified Condition
    SLD+ (d8-2) - GND (d8-1)
    		B - W-B
    		Sliding motor signal (forward)
    		Slide switch OFF
    		Below 1 V
    SLD+ (d8-2) - GND (d8-1)
    		B - W-B
    		Sliding motor signal (forward)
    		Slide switch FRONT ON
    		10 to 14 V
    SLD- (d8-3) - GND (d8-1)
    		G - W-B
    		Sliding motor signal (rearward)
    		Slide switch OFF
    		Below 1 V
    SLD- (d8-3) - GND (d8-1)
    		G - W-B
    		Sliding motor signal (rearward)
    		Slide switch REAR ON
    		10 to 14 V
    FRV+ (d8-6) - GND (d8-1)
    		W - W-B
    		Front vertical motor signal (upward)
    		Front vertical switch OFF
    		Below 1 V
    FRV+ (d8-6) - GND (d8-1)
    		W - W-B
    		Front vertical motor signal (upward)
    		Front vertical switch UP ON
    		10 to 14 V
    FRV- (d8-4) - GND (d8-1)
    		R - W-B
    		Front vertical motor signal (downward)
    		Front vertical switch OFF
    		Below 1 V
    FRV- (d8-4) - GND (d8-1)
    		R - W-B
    		Front vertical motor signal (downward)
    		Front vertical switch DOWN ON
    		10 to 14 V
    LFT+ (d8-7) - GND (d8-1)
    		Y - W-B
    		Lifter motor signal (upward)
    		Lifter switch OFF
    		Below 1 V
    LFT+ (d8-7) - GND (d8-1)
    		Y - W-B
    		Lifter motor signal (upward)
    		Lifter switch UP ON
    		10 to 14 V
    LFT- (d8-9) - GND (d8-1)
    		LG - W-B
    		Lifter motor signal (downward)
    		Lifter switch OFF
    		Below 1 V
    LFT- (d8-9) - GND (d8-1)
    		LG - W-B
    		Lifter motor signal (downward)
    		Lifter switch DOWN ON
    		10 to 14 V
    RCL+ (d8-8) - GND (d8-1)
    		L - W-B
    		Reclining motor signal (forward)
    		Reclining switch OFF
    		Below 1 V
    RCL+ (d8-8) - GND (d8-1)
    		L - W-B
    		Reclining motor signal (forward)
    		Reclining switch FRONT ON
    		10 to 14 V
    RCL- (d8-10) - GND (d8-1)
    		GR - W-B
    		Reclining motor signal (rearward)
    		Reclining switch OFF
    		Below 1 V
    RCL- (d8-10) - GND (d8-1)
    		GR - W-B
    		Reclining motor signal (rearward)
    		Reclining switch REAR ON
    		10 to 14 V
    If the result is not as specified, the control ECU & switch may have a malfunction.


INSPECT POSITION CONTROL ECU & SWITCH ASSEMBLY RH

B107920E07

  1. Disconnect the c6 and c7 ECU connectors.

  2. Measure the voltage and resistance of the wire harness side connectors.

    Symbols (Terminal No.)
    		Wiring Color
    		Terminal Description
    		Condition
    		Specified Condition
    IG (c7-4) - GND (c6-1)
    		B - W-B
    		Engine switch signal
    		Engine switch off
    		Below 1 V
    IG (c7-4) - GND (c6-1)
    		B - W-B
    		Engine switch signal
    		Engine switch on (IG)
    		10 to 14 V
    +B (c6-5) - GND (c6-1)
    		L - W-B
    		Power source
    		Always
    		10 to 14 V
    SYSB (c7-8) - GND (c6-1)
    		R - W-B
    		System power source
    		Always
    		10 to 14 V
    GND (c6-1) - Body ground
    		W-B - Body ground
    		Ground
    		Always
    		Below 1 Ω
    If the result is not as specified, there may be a malfunction on the wire harness side.

  3. Reconnect the c6 and c7 ECU connectors.

  4. Measure the voltage of the connector.

    Symbols (Terminal No.)
    		Wiring Color
    		Terminal Description
    		Condition
    		Specified Condition
    SLD+ (c6-2) - GND (c6-1)
    		B - W-B
    		Sliding motor signal (forward)
    		Slide switch OFF
    		Below 1 V
    SLD+ (c6-2) - GND (c6-1)
    		B - W-B
    		Sliding motor signal (forward)
    		Slide switch FRONT ON
    		10 to 14 V
    SLD- (c6-3) - GND (c6-1)
    		G - W-B
    		Sliding motor signal (rearward)
    		Slide switch OFF
    		Below 1 V
    SLD- (c6-3) - GND (c6-1)
    		G - W-B
    		Sliding motor signal (rearward)
    		Slide switch REAR ON
    		10 to 14 V
    FRV+ (c6-6) - GND (c6-1)
    		W - W-B
    		Front vertical motor signal (upward)
    		Front vertical switch OFF
    		Below 1 V
    FRV+ (c6-6) - GND (c6-1)
    		W - W-B
    		Front vertical motor signal (upward)
    		Front vertical switch UP ON
    		10 to 14 V
    FRV- (c6-4) - GND (c6-1)
    		R - W-B
    		Front vertical motor signal (downward)
    		Front vertical switch OFF
    		Below 1 V
    FRV- (c6-4) - GND (c6-1)
    		R - W-B
    		Front vertical motor signal (downward)
    		Front vertical switch DOWN ON
    		10 to 14 V
    LFT+ (c6-7) - GND (c6-1)
    		Y - W-B
    		Lifter motor signal (upward)
    		Lifter switch OFF
    		Below 1 V
    LFT+ (c6-7) - GND (c6-1)
    		Y - W-B
    		Lifter motor signal (upward)
    		Lifter switch UP ON
    		10 to 14 V
    LFT- (c6-9) - GND (c6-1)
    		LG - W-B
    		Lifter motor signal (downward)
    		Lifter switch OFF
    		Below 1 V
    LFT- (c6-9) - GND (c6-1)
    		LG - W-B
    		Lifter motor signal (downward)
    		Lifter switch DOWN ON
    		10 to 14 V
    RCL+ (c6-8) - GND (c6-1)
    		L - W-B
    		Reclining motor signal (forward)
    		Reclining switch OFF
    		Below 1 V
    RCL+ (c6-8) - GND (c6-1)
    		L - W-B
    		Reclining motor signal (forward)
    		Reclining switch FRONT ON
    		10 to 14 V
    RCL- (c6-10) - GND (c6-1)
    		GR - W-B
    		Reclining motor signal (rearward)
    		Reclining switch OFF
    		Below 1 V
    RCL- (c6-10) - GND (c6-1)
    		GR - W-B
    		Reclining motor signal (rearward)
    		Reclining switch REAR ON
    		10 to 14 V
    If the result is not as specified, the control ECU & switch may have a malfunction.


INSPECT MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY

B107921E06

  1. Disconnect the S5 or R9 master switch connector.

  2. Measure the voltage and resistance of the wire harness side connector.

    LHD 
    Symbols (Terminal No.)
    		Wiring Color
    		Terminal Description
    		Condition
    		Specified Condition
    E (S5-2) - Body ground
    		W-B - Body ground
    		Ground
    		Always
    		Below 1 Ω
    BDR1 (S5-10) - E (S5-2)
    		Y - W-B
    		Power window power source
    		Always
    		10 to 14 V
    CPUB (S5-9) - E (S5-2)
    		G - W-B
    		Power source for CPU and relevant device
    		Always
    		10 to 14 V
    SIG (S5-20) - E (S5-2)
    		V - W-B
    		Power source for CPU and relevant device
    		Engine switch off
    		Below 1 V
    SIG (S5-20) - E (S5-2)
    		V - W-B
    		Power source for CPU and relevant device
    		Engine switch on (IG)
    		10 to 14 V

    RHD 
    Symbols (Terminal No.)
    		Wiring Color
    		Terminal Description
    		Condition
    		Specified Condition
    E (R9-2) - Body ground
    		W-B - Body ground
    		Ground
    		Always
    		Below 1 Ω
    BDR1 (R9-10) - E (R9-2)
    		Y - W-B
    		Power window power source
    		Always
    		10 to 14 V
    CPUB (R9-9) - E (R9-2)
    		G - W-B
    		Power source for CPU and relevant device
    		Always
    		10 to 14 V
    SIG (R9-20) - E (R9-2)
    		V - W-B
    		Power source for CPU and relevant device
    		Engine switch off
    		Below 1 V
    SIG (R9-20) - E (R9-2)
    		V - W-B
    		Power source for CPU and relevant device
    		Engine switch on (IG)
    		10 to 14 V
    If the result is not as specified, there may be a malfunction on the wire harness side.

  3. Reconnect the S5 or R9 master switch connector.

  4. Measure the voltage of the connector.

    LHD 
    Symbols (Terminal No.)
    		Wiring Color
    		Terminal Description
    		Condition
    		Specified Condition
    MM (S5-3) - E (S5-2)
    		SB - W-B
    		SET switch signal
    		SET switch OFF
    		10 to 14 V
    MM (S5-3) - E (S5-2)
    		SB - W-B
    		SET switch signal
    		SET switch ON
    		Below 1 V
    M1 (S5-13) - E (S5-2)
    		L - W-B
    		M1 switch signal
    		M1 switch OFF
    		10 to 14 V
    M1 (S5-13) - E (S5-2)
    		L - W-B
    		M1 switch signal
    		M1 switch ON
    		Below 1 V
    M2 (S5-17) - E (S5-2)
    		V - W-B
    		M2 switch signal
    		M2 switch OFF
    		10 to 14 V
    M2 (S5-17) - E (S5-2)
    		V - W-B
    		M2 switch signal
    		M2 switch ON
    		Below 1 V
    M3 (S5-18) - E (S5-2)
    		R - W-B
    		M3 switch signal
    		M3 switch OFF
    		10 to 14 V
    M3 (S5-18) - E (S5-2)
    		R - W-B
    		M3 switch signal
    		M3 switch ON
    		Below 1 V

    RHD 
    Symbols (Terminal No.)
    		Wiring Color
    		Terminal Description
    		Condition
    		Specified Condition
    MM (R9-3) - E (R9-2)
    		Y - W-B
    		SET switch signal
    		SET switch OFF
    		10 to 14 V
    MM (R9-3) - E (R9-2)
    		Y - W-B
    		SET switch signal
    		SET switch ON
    		Below 1 V
    M1 (R9-13) - E (R9-2)
    		O - W-B
    		M1 switch signal
    		M1 switch OFF
    		10 to 14 V
    M1 (R9-13) - E (R9-2)
    		O - W-B
    		M1 switch signal
    		M1 switch ON
    		Below 1 V
    M2 (R9-17) - E (R9-2)
    		LG - W-B
    		M2 switch signal
    		M2 switch OFF
    		10 to 14 V
    M2 (R9-17) - E (R9-2)
    		LG - W-B
    		M2 switch signal
    		M2 switch ON
    		Below 1 V
    M3 (R9-18) - E (R9-2)
    		SB - W-B
    		M3 switch signal
    		M3 switch OFF
    		10 to 14 V
    M3 (R9-18) - E (R9-2)
    		SB - W-B
    		M3 switch signal
    		M3 switch ON
    		Below 1 V
    If the result is not as specified, the master switch may have a malfunction.


CHECK FRONT MULTIPLEX NETWORK DOOR ECU LH

E106666E25

  1. Disconnect the O3 and O4 ECU connectors.

  2. Measure the voltage and resistance of the wire harness side connector.

    Symbols (Terminal No.)
    		Wiring Color
    		Terminal Description
    		Condition
    		Specified Condition
    GND (O3-1) - Body ground
    		W-B - Body ground
    		Ground
    		Always
    		Below 1 Ω
    CPUB (O3-4) - GND (O3-1)
    		LG - W-B
    		Battery (ECU power source)
    		Always
    		10 to 14 V
    SIG (O3-3) - GND (O3-1)
    		Y - W-B
    		Engine switch (IG) power supply
    		Engine switch off
    		Below 1 V
    SIG (O3-3) - GND (O3-1)
    		Y - W-B
    		Engine switch (IG) power supply
    		Engine switch on (IG)
    		10 to 14 V
    BDR (O3-6) - GND (O3-1)
    		L - W-B
    		Battery (ECU power source)
    		Always
    		10 to 14 V
    *SEL1 (O4-11) - SELE (O4-12)
    		P - P
    		Terminal for identification of driver side
    		Always
    		Below 1 Ω

    HINT:
    *: LHD

    If the result is not as specified, there may be a malfunction on the wire harness side.

  3. Reconnect the O3 and O4 ECU connectors.

  4. Measure the voltage of the connectors.

    LHD 
    Symbols (Terminal No.)
    		Wiring Color
    		Terminal Description
    		Condition
    		Specified Condition
    MSWE (O3-26) - GND (O3-1)
    		W-B - W-B
    		Ground for seat memory switch
    		Always
    		Below 1 V
    SEL1 (O4-11) - GND (O3-1)
    		P - W-B
    		Terminal for identification of driver side
    		Always
    		Below 1 V

    RHD 
    Symbols (Terminal No.)
    		Wiring Color
    		Terminal Description
    		Condition
    		Specified Condition
    MSWE (O3-26) - GND (O3-1)
    		W-B - W-B
    		Ground for seat memory switch
    		Always
    		Below 1 V
    MM (O3-25) - MSWE (O3-26)
    		Y - W-B
    		SET switch signal
    		SET switch OFF
    		10 to 14 V
    MM (O3-25) - MSWE (O3-26)
    		Y - W-B
    		SET switch signal
    		SET switch ON
    		Below 1 V
    M1 (O3-22) - MSWE (O3-26)
    		O - W-B
    		M1 switch signal
    		M1 switch OFF
    		10 to 14 V
    M1 (O3-22) - MSWE (O3-26)
    		O - W-B
    		M1 switch signal
    		M1 switch ON
    		Below 1 V
    M2 (O3-23) - MSWE (O3-26)
    		LG - W-B
    		M2 switch signal
    		M2 switch OFF
    		10 to 14 V
    M2 (O3-23) - MSWE (O3-26)
    		LG - W-B
    		M2 switch signal
    		M2 switch ON
    		Below 1 V
    M3 (O3-24) - MSWE (O3-26)
    		SB - W-B
    		M3 switch signal
    		M3 switch OFF
    		10 to 14 V
    M3 (O3-24) - MSWE (O3-26)
    		SB - W-B
    		M3 switch signal
    		M3 switch ON
    		Below 1 V
    If the result is not as specified, the ECU may have a malfunction.


CHECK FRONT MULTIPLEX NETWORK DOOR ECU RH

E106666E26

  1. Disconnect the N3 and N4 ECU connectors.

  2. Measure the voltage and resistance of the wire harness side connectors.

    Symbols (Terminal No.)
    		Wiring Color
    		Terminal Description
    		Condition
    		Specified Condition
    GND (N4-1) - Body ground
    		W-B - Body ground
    		Ground
    		Always
    		Below 1 Ω
    CPUB (N4-4) - GND (N4-1)
    		L-G - W-B
    		Battery (ECU power source)
    		Always
    		10 to 14 V
    SIG (N4-3) - GND (N4-1)
    		L - W-B
    		Engine switch (IG) power supply
    		Engine switch off
    		Below 1 V
    SIG (N4-3) - GND (N4-1)
    		L - W-B
    		Engine switch (IG) power supply
    		Engine switch on (IG)
    		10 to 14 V
    BDR (N4-6) - GND (N4-1)
    		L - W-B
    		Battery (ECU power source)
    		Always
    		10 to 14 V
    *SEL1 (N3-11) - SELE (N3-12)
    		P - P
    		Terminal for identification of driver side
    		Always
    		Below 1 Ω

    HINT:
    *: RHD

    If the result is not as specified, there may be a malfunction on the wire harness side.

  3. Reconnect the N3 and N4 ECU connectors.

  4. Measure the voltage of the connectors.

    LHD 
    Symbols (Terminal No.)
    		Wiring Color
    		Terminal Description
    		Condition
    		Specified Condition
    MSWE (N4-26) - GND (N4-1)
    		W-B - W-B
    		Ground for seat memory switch
    		Always
    		Below 1 V
    MM (N4-25) - MSWE (N4-26)
    		Y - W-B
    		SET switch signal
    		SET switch OFF
    		10 to 14 V
    MM (N4-25) - MSWE (N4-26)
    		Y - W-B
    		SET switch signal
    		SET switch ON
    		Below 1 V
    M1 (N4-22) - MSWE (N4-26)
    		O - W-B
    		M1 switch signal
    		M1 switch OFF
    		10 to 14 V
    M1 (N4-22) - MSWE (N4-26)
    		O - W-B
    		M1 switch signal
    		M1 switch ON
    		Below 1 V
    M2 (N4-23) - MSWE (N4-26)
    		LG - W-B
    		M2 switch signal
    		M2 switch OFF
    		10 to 14 V
    M2 (N4-23) - MSWE (N4-26)
    		LG - W-B
    		M2 switch signal
    		M2 switch ON
    		Below 1 V
    M3 (N4-24) - MSWE (N4-26)
    		SB - W-B
    		M3 switch signal
    		M3 switch OFF
    		10 to 14 V
    M3 (N4-24) - MSWE (N4-26)
    		SB - W-B
    		M3 switch signal
    		M3 switch ON
    		Below 1 V

    RHD 
    Symbols (Terminal No.)
    		Wiring Color
    		Terminal Description
    		Condition
    		Specified Condition
    MSWE (N4-26) - GND (N4-1)
    		W-B - W-B
    		Ground for seat memory switch
    		Always
    		Below 1 V
    SEL1 (N3-11) - GND (N3-1)
    		P - W-B
    		Terminal for identification of driver side
    		Always
    		Below 1 V
    If the result is not as specified, the ECU may have a malfunction.