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

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CHECK POSITION CONTROL ECU AND SWITCH ASSEMBLY


  1. for LHD:



    1. Disconnect the X4 and X5 connectors from the position control ECU and switch assembly.


      B219506E16

    2. Measure the voltage and resistance according to the value(s) in the table below.

      Terminal No. (Symbol)
      		Wiring Color
      		Terminal Description
      		Condition
      		Specified Condition
      X4-2 (GND) - Body ground
      		W-B - Body ground
      		Ground
      		Always
      		Below 1 Ω
      X4-7 (+B) - X4-2 (GND)
      		W - W-B
      		Power source
      		Power switch off
      		11 to 14 V
      X5-12 (SYSB) - X4-2 (GND)
      		P - W-B
      		System power source
      		Power switch off
      		11 to 14 V
      If the result is not as specified, there may be a malfunction on the wire harness side.

    3. Reconnect the X4 and X5 connectors to the position control ECU and switch assembly.

    4. Measure the voltage and resistance according to the value(s) in the table below.

      Terminal No. (Symbol)
      		Wiring Color
      		Terminal Description
      		Condition
      		Specified Condition
      X4-6 (+B2) - X4-1 (GND2)
      		SB - W-B
      		Lumbar support adjuster power source
      		Power switch off
      		11 to 14 V
      X4-1 (GND2) - Body ground
      		W-B - Body ground
      		Lumbar support adjuster ground
      		Always
      		Below 1 Ω
      X4-3 (SLD+) - X4-2 (GND)
      		L - W-B
      		Sliding motor signal (forward)
      		Slide switch off
      		Below 1 V
      Slide switch on (Forward)
      		11 to 14 V
      X4-4 (SLD-) - X4-2 (GND)
      		GR - W-B
      		Sliding motor signal (rearward)
      		Slide switch off
      		Below 1 V
      Slide switch on (Rearward)
      		11 to 14 V
      X4-5 (FRV-) - X4-2 (GND)
      		R - W-B
      		Front vertical motor signal (downward)
      		Front vertical switch off
      		Below 1 V
      Front vertical switch on (Downward)
      		11 to 14 V
      X4-8 (FRV+) - X4-2 (GND)
      		B - W-B
      		Front vertical motor signal (upward)
      		Front vertical switch off
      		Below 1 V
      Front vertical switch on (Upward)
      		11 to 14 V
      X4-9 (RCL+) - X4-2 (GND)
      		P - W-B
      		Reclining motor signal (forward)
      		Reclining switch off
      		Below 1 V
      Reclining switch on (Forward)
      		11 to 14 V
      X4-11 (RCL-) - X4-2 (GND)
      		LG - W-B
      		Reclining motor signal (rearward)
      		Reclining switch off
      		Below 1 V
      Reclining switch on (Rearward)
      		11 to 14 V
      X4-10 (LFT+) - X4-2 (GND)
      		V - W-B
      		Lifter motor signal (upward)
      		Lifter switch off
      		Below 1 V
      Lifter switch on (Upward)
      		11 to 14 V
      X4-12 (LFT-) - X4-2 (GND)
      		G - W-B
      		Lifter motor signal (downward)
      		Lifter switch off
      		Below 1 V
      Lifter switch on (Downward)
      		11 to 14 V
      X5-1 (SGND) - X4-2 (GND)
      		BR - W-B
      		Position sensor ground
      		Always
      		Below 1 Ω
      X5-3 (SSFV) - X5-1 (SGND)
      		R - BR
      		Front vertical position signal
      		Front vertical function operating
      		4.5 to 4.8 V
      X5-4 (SSRL) - X5-1 (SGND)
      		P - BR
      		Lifter position signal
      		Lifter function operating
      		4.5 to 4.8 V
      X5-5 (SSRS) - X5-1 (SGND)
      		G- BR
      		Slide position signal
      		Slide function operating
      		4.5 to 4.8 V
      X5-11 (SSRR) - X5-1 (SGND)
      		V - BR
      		Reclining position signal
      		Reclining function operating
      		4.5 to 4.8 V
      If the result is not as specified, the position control ECU and switch assembly may have a malfunction.



  2. for RHD:



    1. Disconnect the W3 and W4 connectors from the position control ECU and switch assembly.


      B219505E05

    2. Measure the voltage and resistance according to the value(s) in the table below.

      Terminal No. (Symbol)
      		Wiring Color
      		Terminal Description
      		Condition
      		Specified Condition
      W3-2 (GND) - Body ground
      		W-B - Body ground
      		Ground
      		Always
      		Below 1 Ω
      W3-7 (+B) - W3-2 (GND)
      		W - W-B
      		Power source
      		Power switch off
      		11 to 14 V
      W4-12 (SYSB) - W3-2 (GND)
      		P - W-B
      		System power source
      		Power switch off
      		11 to 14 V
      If the result is not as specified, there may be a malfunction on the wire harness side.

    3. Reconnect the W3 and W4 connectors to the position control ECU and switch assembly.

    4. Measure the voltage and resistance according to the value(s) in the table below.

      Terminal No. (Symbol)
      		Wiring Color
      		Terminal Description
      		Condition
      		Specified Condition
      W3-6 (+B2) - W3-1 (GND2)
      		SB - W-B
      		Lumbar support adjuster power source
      		Power switch off
      		11 to 14 V
      W3-1 (GND2) - Body ground
      		W-B - Body ground
      		Lumbar support adjuster ground
      		Always
      		Below 1 Ω
      W3-3 (SLD+) - W3-2 (GND)
      		L - W-B
      		Sliding motor signal (forward)
      		Slide switch off
      		Below 1 V
      Slide switch on (Forward)
      		11 to 14 V
      W3-4 (SLD-) - W3-2 (GND)
      		GR - W-B
      		Sliding motor signal (rearward)
      		Slide switch off
      		Below 1 V
      Slide switch on (Rearward)
      		11 to 14 V
      W3-5 (FRV-) - W3-2 (GND)
      		R - W-B
      		Front vertical motor signal (downward)
      		Front vertical switch off
      		Below 1 V
      Front vertical switch on (Downward)
      		11 to 14 V
      W3-8 (FRV+) - W3-2 (GND)
      		B - W-B
      		Front vertical motor signal (upward)
      		Front vertical switch off
      		Below 1 V
      Front vertical switch on (Upward)
      		11 to 14 V
      W3-9 (RCL+) - W3-2 (GND)
      		P - W-B
      		Reclining motor signal (forward)
      		Reclining switch off
      		Below 1 V
      Reclining switch on (Forward)
      		11 to 14 V
      W3-11 (RCL-) - W3-2 (GND)
      		LG - W-B
      		Reclining motor signal (rearward)
      		Reclining switch off
      		Below 1 V
      Reclining switch on (Rearward)
      		11 to 14 V
      W3-10 (LFT+) - W3-2 (GND)
      		V - W-B
      		Lifter motor signal (upward)
      		Lifter switch off
      		Below 1 V
      Lifter switch on (Upward)
      		11 to 14 V
      W3-12 (LFT-) - W3-2 (GND)
      		G - W-B
      		Lifter motor signal (downward)
      		Lifter switch off
      		Below 1 V
      Lifter switch on (Downward)
      		11 to 14 V
      W4-1 (SGND) - W3-2 (GND)
      		BR - W-B
      		Position sensor round
      		Always
      		Below 1 Ω
      W4-3 (SSFV) - W4-1 (SGND)
      		R - BR
      		Front vertical position signal
      		Front vertical function operating
      		4.5 to 4.8 V
      W4-4 (SSRL) - W4-1 (SGND)
      		P - BR
      		Lifter position signal
      		Lifter function operating
      		4.5 to 4.8 V
      W4-5 (SSRS) - W4-1 (SGND)
      		G- BR
      		Slide position signal
      		Slide function operating
      		4.5 to 4.8 V
      W4-11 (SSRR) - W4-1 (SGND)
      		V - BR
      		Reclining position signal
      		Reclining function operating
      		4.5 to 4.8 V
      If the result is not as specified, the position control ECU and switch assembly may have a malfunction.


CHECK OUTER MIRROR CONTROL ECU ASSEMBLY (for Driver Side)

B209687E36

  1. for LHD:

    1. Disconnect the K7 connector from the outer mirror control ECU assembly (for driver side).

    2. Measure the voltage and resistance according to the value(s) in the table below.

      Tester Connection
      		Wiring Color
      		Terminal Description
      		Condition
      		Specified Condition
      K7-7 (GND) - Body ground
      		W-B - Body ground
      		Ground
      		Always
      		Below 1 Ω
      K7-14 (BDR) - K7-7 (GND)
      		L - W-B
      		Power source
      		Power switch off
      		11 to 14 V
      K7-5 (SIG) - K7-7 (GND)
      		Y - W-B
      		Power source (IG)
      		Power switch off
      		Below 1 V
      Power switch on (IG)
      		11 to 14 V
      K7-6 (CPUB) - K7-7 (GND)
      		LG - W-B
      		Power source
      		Power switch off
      		11 to 14 V
      If the result is not as specified, there may be a malfunction in the wire harness.

    3. Reconnect the K7 connector to the outer mirror control ECU assembly (for driver side).

    4. Measure the voltage according to the value(s) in the table below.

      Tester Connection
      		Wiring Color
      		Terminal Description
      		Condition
      		Specified Condition
      K7-4 (M3) - K7-13 (MSWE)
      		G - W
      		M3 switch signal for seat memory switch
      		M3 switch on
      		Below 1 V
      M3 switch off
      		11 to 14 V
      K7-3 (M2) - K7-13 (MSWE)
      		L - W
      		M2 switch signal for seat memory switch
      		M2 switch on
      		Below 1 V
      M2 switch off
      		11 to 14 V
      K7-2 (M1) - K7-13 (MSWE)
      		R - W
      		M1 switch signal for seat memory switch
      		M1 switch on
      		Below 1 V
      M1 switch off
      		11 to 14 V
      K7-1 (MM) - K7-13 (MSWE)
      		SB - W
      		SET switch signal for seat memory switch
      		SET switch on
      		Below 1 V
      SET switch off
      		11 to 14 V
      If the result is not as specified, the outer mirror control ECU assembly (for driver side) may have a malfunction.

  2. for RHD:

    1. Disconnect the J8 connector from the outer mirror control ECU assembly (for driver side).

    2. Measure the voltage and resistance according to the value(s) in the table below.

      Tester Connection
      		Wiring Color
      		Terminal Description
      		Condition
      		Specified Condition
      J8-7 (GND) - Body ground
      		W-B - Body ground
      		Ground
      		Always
      		Below 1 Ω
      J8-14 (BDR) - J8-7 (GND)
      		L - W-B
      		Power source
      		Power switch off
      		11 to 14 V
      J8-5 (SIG) - J8-7 (GND)
      		Y - W-B
      		Power source (IG)
      		Power switch off
      		Below 1 V
      Power switch on (IG)
      		11 to 14 V
      J8-6 (CPUB) - J8-7 (GND)
      		LG - W-B
      		Power source
      		Power switch off
      		11 to 14 V
      If the result is not as specified, there may be a malfunction in the wire harness.

    3. Reconnect the J8 connector to the outer mirror control ECU assembly (for driver side).

    4. Measure the voltage according to the value(s) in the table below.

      Tester Connection
      		Wiring Color
      		Terminal Description
      		Condition
      		Specified Condition
      J8-4 (M3) - J8-13 (MSWE)
      		G - W
      		M3 switch signal for seat memory switch
      		M3 switch on
      		Below 1 V
      M3 switch off
      		11 to 14 V
      J8-3 (M2) - J8-13 (MSWE)
      		R - W
      		M2 switch signal for seat memory switch
      		M2 switch on
      		Below 1 V
      M2 switch off
      		11 to 14 V
      J8-2 (M1) - J8-13 (MSWE)
      		V - W
      		M1 switch signal for seat memory switch
      		M1 switch on
      		Below 1 V
      M1 switch off
      		11 to 14 V
      J8-1 (MM) - J8-13 (MSWE)
      		SB - W
      		SET switch signal for seat memory switch
      		SET switch on
      		Below 1 V
      SET switch off
      		11 to 14 V
      If the result is not as specified, the outer mirror control ECU assembly (for driver side) may have a malfunction.


CHECK MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

E187247E19

  1. Disconnect the 2C, 2E*1, 2F*2 and 2B connectors from the instrument panel junction block assembly.

  2. Measure the voltage and resistance according to the value(s) in the table below.

    Tester Connection
    		Wiring Color
    		Terminal Description
    		Condition
    		Specified Condition
    2C-18 - Body ground
    		B - Body ground
    		Power source
    		Power switch off
    		11 to 14 V
    2E-1 - Body ground*1
    2F-1 - Body ground*2
    		W - Body ground
    		Power source (IG)
    		Power switch off
    		11 to 14 V
    2B-6 - Body ground
    		W-B - Body ground
    		Body ground
    		Always
    		Below 1 Ω

    1. *1: for LHD
    2. *2: for RHD
    If the result is not as specified, there may be a malfunction in the wire harness.

  3. Reconnect the 2C, 2E and 2B instrument panel junction block assembly connectors.

  4. Measure the voltage according to the value(s) in the table below.

    Tester Connection
    		Wiring Color
    		Terminal Description
    		Condition
    		Specified Condition
    2D-35 (FLCY) - Body ground*1
    		BR - Body ground
    		Front door courtesy light switch assembly signal
    		Driver door closed
    		11 to 14 V
    Driver door open
    		Below 1 V
    2D-36 (FRCY) - Body ground*2
    		BR - Body ground
    		Front door courtesy light switch assembly signal
    		Driver door closed
    		11 to 14 V
    Driver door open
    		Below 1 V

    1. *1: for LHD
    2. *2: for RHD