FRONT POWER SEAT CONTROL SYSTEM TERMINALS OF ECU

for LHD:

1. Disconnect the Q27 and Q28 position control ECU assembly connectors.

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
   Q27-1 (+B2) - Body ground	W - Body ground	Auxiliary battery power supply	Power switch off	11 to 14 V
   Q27-2 (+B1) - Body ground	W - Body ground	Auxiliary battery power supply	Power switch off	11 to 14 V
   Q28-1 (GND2) - Body ground	W-B - Body ground	Ground	Always	Below 1 Ω
   Q28-2 (GND1) - Body ground	W-B - Body ground	Ground	Always	Below 1 Ω
   Q28-18 (SYSB) - Body ground		System power source	Power switch off	11 to 14 V
   Q28-19 (IG) - Body ground	SB - Body ground	Ignition power supply	Power switch off	Below 1 V
   			Power switch on (IG)	11 to 14 V
   Q28-20 (DBCL) - Body ground	BR - Body ground	Driver seat belt buckle switch signal	Driver seat belt unfastened	10 kΩ or higher
   			Driver seat belt fastened	Below 1 Ω
   Q28-21 (DRDC) - Body ground	V - Body ground	Driver seat belt tension reducer signal	Power switch on (IG)	11 to 14 V

3. Reconnect the Q27 and Q28 position control ECU assembly connectors.

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
   Q25-3 (HD-) - Body ground	LG - Body ground	Headrest motor signal (rearward)	Headrest adjuster switch off	Below 1 V
   			Headrest adjuster switch on (rearward)	11 to 14 V
   Q25-4 (H+) - Body ground	L - Body ground	Headrest motor signal (upward)	Headrest switch off	Below 1 V
   			Headrest switch on (upward)	11 to 14 V
   Q258-5 (H-) - Body ground	GR - Body ground	Headrest motor signal (rearward)	Headrest adjuster switch off	Below 1 V
   			Headrest switch on (downward)	11 to 14 V
   Q25-6 (HD+) - Body ground	P - Body ground	Headrest motor signal (forward)	Headrest adjuster switch off	Below 1 V
   			Headrest adjuster switch on (forward)	11 to 14 V
   Q26-1 (CUS-) - Body ground	B - Body ground	Cushion motor signal (rearward)	Cushion switch off	Below 1 V
   			Cushion switch on (rearward)	11 to 14 V
   Q26-2 (LFT-) - Body ground	B - Body ground	Rear lifter motor signal (downward)	Rear lifter switch off	Below 1 V
   			Rear lifter switch on (downward)	11 to 14 V
   Q26-3 (CUS+) - Body ground	R - Body ground	Cushion motor signal (forward)	Cushion switch off	Below 1 V
   			Cushion switch on (forward)	11 to 14 V
   Q26-5 (RCL-) - Body ground	B - Body ground	Reclining motor signal (rearward)	Reclining adjuster switch off	Below 1 V
   			Reclining switch on (downward)	11 to 14 V
   Q26-6 (FRV-) - Body ground	B - Body ground	Front tilt motor signal (downward)	Front vertical switch off	Below 1 V
   			Front vertical switch on (rearward)	11 to 14 V
   Q26-7 (FRV+) - Body ground	R - Body ground	Front vertical motor signal (upward)	Front vertical switch off	Below 1 V
   			Front vertical switch on (upward)	11 to 14 V
   Q26-8 (RCL+) - Body ground	R - Body ground	Reclining motor signal (upward)	Reclining switch off	Below 1 V
   			Reclining switch on (upward)	11 to 14 V
   Q26-29 (LFT+) - Body ground	B - Body ground	Rear lifter motor signal (upward)	Rear lifter switch off	Below 1 V
   			Rear lifter switch on (upward)	11 to 14 V
   Q27-3 (RCLF) - Body ground	W - Body ground	Reclining switch signal (forward)	Reclining switch off	11 to 14 V
   			Reclining switch on (forward)	Below 1 V
   Q27-4 (LVU) - Body ground	L - Body ground	Lumbar support adjuster switch signal (upward)	Lumbar support adjuster switch off	11 to 14 V
   			Lumbar support adjuster switch on (upward)	Below 1 V
   Q27-7 (CUSF) - Body ground	V - Body ground	Cushion switch signal (forward)	Cushion switch off	11 to 14 V
   			Cushion switch on (forward)	Below 1 V
   Q27-8 (CUSR) - Body ground	GR - Body ground	Cushion switch signal (rearward)	Cushion switch off	11 to 14 V
   			Cushion switch on (rearward)	Below 1 V
   Q27-9 (LFTU) - Body ground	BR - Body ground	Rear lifter switch signal (upward)	Rear lifter switch off	11 to 14 V
   			Rear lifter switch on (upward)	Below 1 V
   Q27-10 (LFTD) - Body ground	Y - Body ground	Rear lifter switch signal (downward)	Rear lifter switch off	11 to 14 V
   			Rear lifter switch on (downward)	Below 1 V
   Q27-11 (RCLR) - Body ground	B - Body ground	Power seat switch LH (slide switch (forward)) signal	Reclining switch off	11 to 14 V
   			Reclining switch on (rearward)	Below 1 V
   Q27-12 (FRVU) - Body ground	GR - Body ground	Front vertical switch signal (upward)	Front vertical switch off	11 to 14 V
   			Front vertical switch on (upward)	Below 1 V
   Q27-13 (LVD) - Body ground	LG - Body ground	Lumbar support adjuster switch signal (downward)	Lumbar support adjuster switch off	11 to 14 V
   			Lumbar support adjuster switch on (downward)	Below 1 V
   Q27-14 (LFLF) - Body ground	Y - Body ground	Lumbar support adjuster switch signal (forward)	Lumbar support adjuster switch off	11 to 14 V
   			Lumbar support adjuster switch on (forward)	Below 1 V
   Q27-19 (SLDF) - Body ground	R - Body ground	Slide switch signal (forward)	Slide switch off	11 to 14 V
   			Slide switch on (forward)	Below 1 V
   Q27-20 (SLDR) - Body ground	G - Body ground	Slide switch signal (rearward)	Slide switch off	11 to 14 V
   			Slide switch on (rearward)	Below 1 V
   Q27-21 (FRVD) - Body ground	BR - Body ground	Front vertical switch signal (downward)	Front vertical switch off	11 to 14 V
   			Front vertical switch on (downward)	Below 1 V
   Q27-22 (LFLR) - Body ground	SB - Body ground	Lumbar support adjuster switch signal (rearward)	Lumbar support adjuster switch off	11 to 14 V
   			Lumbar support adjuster switch on (rearward)	Below 1 V
   Q27-24 (EMVS) - Body ground	BR - Body ground	Integration control and panel switch signal	Integration control and panel switch off	11 to 14 V
   			Integration control and panel switch on	Below 1 V
   Q28-3 (POMG) ←→ Q28-4 (POM)	V - W-B	Lumbar support pump sub-assembly signal	Lumbar support pump sub-assembly operating	11 to 14 V
   Q28-5 (SLD+) - Body ground	R - Body ground	Slide motor signal (forward)	Slide switch off	Below 1 V
   			Slide switch on (forward)	11 to 14 V
   Q28-6 (SLD-) - Body ground	B - Body ground	Slide motor signal (rearward)	Slide switch off	Below 1 V
   			Slide switch on (rearward)	11 to 14 V
   Q28-7 (LIN) - Body ground	SB - Body ground	LIN communication line	Power switch on (IG)	Pulse generation
   Q28-10 (SSHD) - Body ground	Y - Body ground	Headrest position signal	Headrest up/down function operating	Pulse generation
   Q28-13 (SSRC) - Body ground	P - Body ground	Cushion position signal	Cushion length function operating	Pulse generation
   Q28-14 (SSRH) - Body ground	G - Body ground	Headrest position signal	Headrest front/rear function operating	Pulse generation
   Q28-15 (SSRL) - Body ground	LG - Body ground	Rear lifter position signal	Rear lifter function operating	Pulse generation
   Q28-16 (SGND) - Body ground	GR - Body ground	Sensor ground	Always	Below 1 Ω
   Q28-24 (SSRR) - Body ground	L - Body ground	Reclining position signal	Reaclining function operating	Pulse generation
   Q28-25 (SSFV) - Body ground	GR - Body ground	Front tilt position signal	Front tilt function operating	Pulse generation
   Q28-26 (SSRS) - Body ground	BR - Body ground	Slide position signal	Slide function operating	Pulse generation

for RHD:

1. Disconnect the Q7 and Q8 position control ECU assembly connectors.

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
   Q7-1 (+B2) - Body ground	W - Body ground	Auxiliary battery power supply	Power switch off	11 to 14 V
   Q7-2 (+B1) - Body ground	W - Body ground	Auxiliary battery power supply	Power switch off	11 to 14 V
   Q8-1 (GND2) - Body ground	W-B - Body ground	Ground	Always	Below 1 Ω
   Q8-2 (GND1) - Body ground	W-B - Body ground	Ground	Always	Below 1 Ω
   Q8-18 (SYSB) - Body ground		System power source	Power switch off	11 to 14 V
   Q8-19 (IG) - Body ground	SB - Body ground	Ignition power supply	Power switch off	Below 1 V
   			Power switch on (IG)	11 to 14 V
   Q8-20 (DBCL) - Body ground	BR - Body ground	Driver seat belt buckle switch signal	Driver seat belt unfastened	10 kΩ or higher
   			Driver seat belt fastened	Below 1 Ω
   Q8-21 (DRDC) - Body ground	V - Body ground	Driver seat belt tension reducer signal	Power switch on (IG)	11 to 14 V

3. Reconnect the Q7and Q8 position control ECU assembly connectors.

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
   Q5-3 (HD-) - Body ground	LG - Body ground	Headrest motor signal (rearward)	Headrest adjuster switch off	Below 1 V
   			Headrest adjuster switch on (rearward)	11 to 14 V
   Q5-4 (H+) - Body ground	L - Body ground	Headrest motor signal (upward)	Headrest switch off	Below 1 V
   			Headrest switch on (upward)	11 to 14 V
   Q5-5 (H-) - Body ground	GR - Body ground	Headrest motor signal (rearward)	Headrest adjuster switch off	Below 1 V
   			Headrest switch on (downward)	11 to 14 V
   Q2-6 (HD+) - Body ground	P - Body ground	Headrest motor signal (forward)	Headrest adjuster switch off	Below 1 V
   			Headrest adjuster switch on (forward)	11 to 14 V
   Q6-1 (CUS-) - Body ground	B - Body ground	Cushion motor signal (rearward)	Cushion switch off	Below 1 V
   			Cushion switch on (rearward)	11 to 14 V
   Q6-2 (LFT-) - Body ground	B - Body ground	Rear lifter motor signal (downward)	Rear lifter switch off	Below 1 V
   			Rear lifter switch on (downward)	11 to 14 V
   Q6-3 (CUS+) - Body ground	R - Body ground	Cushion motor signal (forward)	Cushion switch off	Below 1 V
   			Cushion switch on (forward)	11 to 14 V
   Q6-5 (RCL-) - Body ground	B - Body ground	Reclining motor signal (rearward)	Reclining adjuster switch off	Below 1 V
   			Reclining switch on (downward)	11 to 14 V
   Q6-6 (FRV-) - Body ground	B - Body ground	Front tilt motor signal (downward)	Front vertical switch off	Below 1 V
   			Front vertical switch on (rearward)	11 to 14 V
   Q6-7 (FRV+) - Body ground	R - Body ground	Front vertical motor signal (upward)	Front vertical switch off	Below 1 V
   			Front vertical switch on (upward)	11 to 14 V
   Q6-8 (RCL+) - Body ground	R - Body ground	Reclining motor signal (upward)	Reclining switch off	Below 1 V
   			Reclining switch on (upward)	11 to 14 V
   Q6-29 (LFT+) - Body ground	B - Body ground	Rear lifter motor signal (upward)	Rear lifter switch off	Below 1 V
   			Rear lifter switch on (upward)	11 to 14 V
   Q7-3 (RCLF) - Body ground	W - Body ground	Reclining switch signal (forward)	Reclining switch off	11 to 14 V
   			Reclining switch on (forward)	Below 1 V
   Q7-4 (LVU) - Body ground	L - Body ground	Lumbar support adjuster switch signal (upward)	Lumbar support adjuster switch off	11 to 14 V
   			Lumbar support adjuster switch on (upward)	Below 1 V
   Q7-7 (CUSF) - Body ground	V - Body ground	Cushion switch signal (forward)	Cushion switch off	11 to 14 V
   			Cushion switch on (forward)	Below 1 V
   Q7-8 (CUSR) - Body ground	GR - Body ground	Cushion switch signal (rearward)	Cushion switch off	11 to 14 V
   			Cushion switch on (rearward)	Below 1 V
   Q7-9 (LFTU) - Body ground	BR - Body ground	Rear lifter switch signal (upward)	Rear lifter switch off	11 to 14 V
   			Rear lifter switch on (upward)	Below 1 V
   Q7-10 (LFTD) - Body ground	Y - Body ground	Rear lifter switch signal (downward)	Rear lifter switch off	11 to 14 V
   			Rear lifter switch on (downward)	Below 1 V
   Q7-11 (RCLR) - Body ground	B - Body ground	Power seat switch LH (slide switch (forward)) signal	Reclining switch off	11 to 14 V
   			Reclining switch on (rearward)	Below 1 V
   Q7-12 (FRVU) - Body ground	GR - Body ground	Front vertical switch signal (upward)	Front vertical switch off	11 to 14 V
   			Front vertical switch on (upward)	Below 1 V
   Q7-13 (LVD) - Body ground	LG - Body ground	Lumbar support adjuster switch signal (downward)	Lumbar support adjuster switch off	11 to 14 V
   			Lumbar support adjuster switch on (downward)	Below 1 V
   Q7-14 (LFLF) - Body ground	Y - Body ground	Lumbar support adjuster switch signal (forward)	Lumbar support adjuster switch off	11 to 14 V
   			Lumbar support adjuster switch on (forward)	Below 1 V
   Q7-19 (SLDF) - Body ground	R - Body ground	Slide switch signal (forward)	Slide switch off	11 to 14 V
   			Slide switch on (forward)	Below 1 V
   Q7-20 (SLDR) - Body ground	G - Body ground	Slide switch signal (rearward)	Slide switch off	11 to 14 V
   			Slide switch on (rearward)	Below 1 V
   Q7-21 (FRVD) - Body ground	BR - Body ground	Front vertical switch signal (downward)	Front vertical switch off	11 to 14 V
   			Front vertical switch on (downward)	Below 1 V
   Q7-22 (LFLR) - Body ground	SB - Body ground	Lumbar support adjuster switch signal (rearward)	Lumbar support adjuster switch off	11 to 14 V
   			Lumbar support adjuster switch on (rearward)	Below 1 V
   Q7-24 (EMVS) - Body ground	BR - Body ground	Integration control and panel switch signal	Integration control and panel switch off	11 to 14 V
   			Integration control and panel switch on	Below 1 V
   Q8-3 (POMG) ←→ Q8-4 (POM)	V - W-B	Lumbar support pump sub-assembly signal	Lumbar support pump sub-assembly operating	11 to 14 V
   Q8-5 (SLD+) - Body ground	R - Body ground	Slide motor signal (forward)	Slide switch off	Below 1 V
   			Slide switch on (forward)	11 to 14 V
   Q8-6 (SLD-) - Body ground	B - Body ground	Slide motor signal (rearward)	Slide switch off	Below 1 V
   			Slide switch on (rearward)	11 to 14 V
   Q8-7 (LIN) - Body ground	SB - Body ground	LIN communication line	Power switch on (IG)	Pulse generation
   Q8-10 (SSHD) - Body ground	Y - Body ground	Headrest position signal	Headrest up/down function operating	Pulse generation
   Q8-13 (SSRC) - Body ground	P - Body ground	Cushion position signal	Cushion length function operating	Pulse generation
   Q8-14 (SSRH) - Body ground	G - Body ground	Headrest position signal	Headrest front/rear function operating	Pulse generation
   Q8-15 (SSRL) - Body ground	LG - Body ground	Rear lifter position signal	Rear lifter function operating	Pulse generation
   Q8-16 (SGND) - Body ground	GR - Body ground	Sensor ground	Always	Below 1 Ω
   Q8-24 (SSRR) - Body ground	L - Body ground	Reclining position signal	Reaclining function operating	Pulse generation
   Q8-25 (SSFV) - Body ground	GR - Body ground	Front tilt position signal	Front tilt function operating	Pulse generation
   Q8-26 (SSRS) - Body ground	BR - Body ground	Slide position signal	Slide function operating	Pulse generation

for LHD:

1. Reconnect the Q7and Q8 No. 2 position control ECU assembly connectors.

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
   Q7-1 (+B2) - Body ground	W - Body ground	Auxiliary battery power supply	Power switch off	11 to 14 V
   Q7-2 (+B1) - Body ground	W - Body ground	Auxiliary battery power supply	Power switch off	11 to 14 V
   Q8-1 (GND2) - Body ground	W-B - Body ground	Ground	Always	Below 1 Ω
   Q8-2 (GND1) - Body ground	W-B - Body ground	Ground	Always	Below 1 Ω
   Q8-18 (SYSB) - Body ground		System power source	Power switch off	11 to 14 V
   Q8-19 (IG) - Body ground	SB - Body ground	Ignition power supply	Power switch off	Below 1 V
   			Power switch on (IG)	11 to 14 V
   Q8-20 (DBCL) - Body ground	BR - Body ground	Front passenger seat belt buckle switch signal	Front passenger seat belt unfastened	10 kΩ or higher
   			Front passenger seat belt fastened	Below 1 Ω
   Q8-21 (DRDC) - Body ground	V - Body ground	Front passenger seat belt tension reducer signal	Power switch on (IG)	11 to 14 V

3. Reconnect the Q7and Q8 No. 2 No. 2 position control ECU assembly connectors.

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
   Q5-3 (HD-) - Body ground	LG - Body ground	Headrest motor signal (rearward)	Headrest adjuster switch off	Below 1 V
   			Headrest adjuster switch on (rearward)	11 to 14 V
   Q5-4 (H+) - Body ground	L - Body ground	Headrest motor signal (upward)	Headrest switch off	Below 1 V
   			Headrest switch on (upward)	11 to 14 V
   Q5-5 (H-) - Body ground	GR - Body ground	Headrest motor signal (rearward)	Headrest adjuster switch off	Below 1 V
   			Headrest switch on (downward)	11 to 14 V
   Q2-6 (HD+) - Body ground	P - Body ground	Headrest motor signal (forward)	Headrest adjuster switch off	Below 1 V
   			Headrest adjuster switch on (forward)	11 to 14 V
   Q6-1 (CUS-) - Body ground	B - Body ground	Cushion motor signal (rearward)	Cushion switch off	Below 1 V
   			Cushion switch on (rearward)	11 to 14 V
   Q6-2 (LFT-) - Body ground	B - Body ground	Rear lifter motor signal (downward)	Rear lifter switch off	Below 1 V
   			Rear lifter switch on (downward)	11 to 14 V
   Q6-3 (CUS+) - Body ground	R - Body ground	Cushion motor signal (forward)	Cushion switch off	Below 1 V
   			Cushion switch on (forward)	11 to 14 V
   Q6-5 (RCL-) - Body ground	B - Body ground	Reclining motor signal (rearward)	Reclining adjuster switch off	Below 1 V
   			Reclining switch on (downward)	11 to 14 V
   Q6-6 (FRV-) - Body ground	B - Body ground	Front tilt motor signal (downward)	Front vertical switch off	Below 1 V
   			Front vertical switch on (rearward)	11 to 14 V
   Q6-7 (FRV+) - Body ground	R - Body ground	Front vertical motor signal (upward)	Front vertical switch off	Below 1 V
   			Front vertical switch on (upward)	11 to 14 V
   Q6-8 (RCL+) - Body ground	R - Body ground	Reclining motor signal (upward)	Reclining switch off	Below 1 V
   			Reclining switch on (upward)	11 to 14 V
   Q6-29 (LFT+) - Body ground	B - Body ground	Rear lifter motor signal (upward)	Rear lifter switch off	Below 1 V
   			Rear lifter switch on (upward)	11 to 14 V
   Q7-3 (RCLF) - Body ground	W - Body ground	Reclining switch signal (forward)	Reclining switch off	11 to 14 V
   			Reclining switch on (forward)	Below 1 V
   Q7-4 (LVU) - Body ground	L - Body ground	Lumbar support adjuster switch signal (upward)	Lumbar support adjuster switch off	11 to 14 V
   			Lumbar support adjuster switch on (upward)	Below 1 V
   Q7-7 (CUSF) - Body ground	V - Body ground	Cushion switch signal (forward)	Cushion switch off	11 to 14 V
   			Cushion switch on (forward)	Below 1 V
   Q7-8 (CUSR) - Body ground	GR - Body ground	Cushion switch signal (rearward)	Cushion switch off	11 to 14 V
   			Cushion switch on (rearward)	Below 1 V
   Q7-9 (LFTU) - Body ground	BR - Body ground	Rear lifter switch signal (upward)	Rear lifter switch off	11 to 14 V
   			Rear lifter switch on (upward)	Below 1 V
   Q7-10 (LFTD) - Body ground	Y - Body ground	Rear lifter switch signal (downward)	Rear lifter switch off	11 to 14 V
   			Rear lifter switch on (downward)	Below 1 V
   Q7-11 (RCLR) - Body ground	B - Body ground	Power seat switch LH (slide switch (forward)) signal	Reclining switch off	11 to 14 V
   			Reclining switch on (rearward)	Below 1 V
   Q7-12 (FRVU) - Body ground	GR - Body ground	Front vertical switch signal (upward)	Front vertical switch off	11 to 14 V
   			Front vertical switch on (upward)	Below 1 V
   Q7-13 (LVD) - Body ground	LG - Body ground	Lumbar support adjuster switch signal (downward)	Lumbar support adjuster switch off	11 to 14 V
   			Lumbar support adjuster switch on (downward)	Below 1 V
   Q7-14 (LFLF) - Body ground	Y - Body ground	Lumbar support adjuster switch signal (forward)	Lumbar support adjuster switch off	11 to 14 V
   			Lumbar support adjuster switch on (forward)	Below 1 V
   Q7-19 (SLDF) - Body ground	R - Body ground	Slide switch signal (forward)	Slide switch off	11 to 14 V
   			Slide switch on (forward)	Below 1 V
   Q7-20 (SLDR) - Body ground	G - Body ground	Slide switch signal (rearward)	Slide switch off	11 to 14 V
   			Slide switch on (rearward)	Below 1 V
   Q7-21 (FRVD) - Body ground	BR - Body ground	Front vertical switch signal (downward)	Front vertical switch off	11 to 14 V
   			Front vertical switch on (downward)	Below 1 V
   Q7-22 (LFLR) - Body ground	SB - Body ground	Lumbar support adjuster switch signal (rearward)	Lumbar support adjuster switch off	11 to 14 V
   			Lumbar support adjuster switch on (rearward)	Below 1 V
   Q8-3 (POMG) ←→ Q8-4 (POM)	V - W-B	Lumbar support pump sub-assembly signal	Lumbar support pump sub-assembly operating	11 to 14 V
   Q8-5 (SLD+) - Body ground	R - Body ground	Slide motor signal (forward)	Slide switch off	Below 1 V
   			Slide switch on (forward)	11 to 14 V
   Q8-6 (SLD-) - Body ground	B - Body ground	Slide motor signal (rearward)	Slide switch off	Below 1 V
   			Slide switch on (rearward)	11 to 14 V
   Q8-7 (LIN) - Body ground	SB - Body ground	LIN communication line	Power switch on (IG)	Pulse generation
   Q8-10 (SSHD) - Body ground	Y - Body ground	Headrest position signal	Headrest up/down function operating	Pulse generation
   Q8-13 (SSRC) - Body ground	P - Body ground	Cushion position signal	Cushion length function operating	Pulse generation
   Q8-14 (SSRH) - Body ground	G - Body ground	Headrest position signal	Headrest front/rear function operating	Pulse generation
   Q8-15 (SSRL) - Body ground	LG - Body ground	Rear lifter position signal	Rear lifter function operating	Pulse generation
   Q8-16 (SGND) - Body ground	GR - Body ground	Sensor ground	Always	Below 1 Ω
   Q8-24 (SSRR) - Body ground	L - Body ground	Reclining position signal	Reaclining function operating	Pulse generation
   Q8-25 (SSFV) - Body ground	GR - Body ground	Front tilt position signal	Front tilt function operating	Pulse generation
   Q8-26 (SSRS) - Body ground	BR - Body ground	Slide position signal	Slide function operating	Pulse generation

for RHD:

1. Disconnect the Q27 and Q28 No. 2 position control ECU assembly connectors.

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
   Q27-1 (+B2) - Body ground	W - Body ground	Auxiliary battery power supply	Power switch off	11 to 14 V
   Q27-2 (+B1) - Body ground	W - Body ground	Auxiliary battery power supply	Power switch off	11 to 14 V
   Q28-1 (GND2) - Body ground	W-B - Body ground	Ground	Always	Below 1 Ω
   Q28-2 (GND1) - Body ground	W-B - Body ground	Ground	Always	Below 1 Ω
   Q28-18 (SYSB) - Body ground		System power source	Power switch off	11 to 14 V
   Q28-19 (IG) - Body ground	SB - Body ground	Ignition power supply	Power switch off	Below 1 V
   			Power switch on (IG)	11 to 14 V
   Q28-20 (DBCL) - Body ground	BR - Body ground	Front passenger seat belt buckle switch signal	Front passenger seat belt unfastened	10 kΩ or higher
   			Front passenger seat belt fastened	Below 1 Ω
   Q28-21 (DRDC) - Body ground	V - Body ground	Front passenger seat belt tension reducer signal	Power switch on (IG)	11 to 14 V

3. Reconnect the Q27 and Q28 No. 2 position control ECU assembly connectors.

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
   Q25-3 (HD-) - Body ground	LG - Body ground	Headrest motor signal (rearward)	Headrest adjuster switch off	Below 1 V
   			Headrest adjuster switch on (rearward)	11 to 14 V
   Q25-4 (H+) - Body ground	L - Body ground	Headrest motor signal (upward)	Headrest switch off	Below 1 V
   			Headrest switch on (upward)	11 to 14 V
   Q258-5 (H-) - Body ground	GR - Body ground	Headrest motor signal (rearward)	Headrest adjuster switch off	Below 1 V
   			Headrest switch on (downward)	11 to 14 V
   Q25-6 (HD+) - Body ground	P - Body ground	Headrest motor signal (forward)	Headrest adjuster switch off	Below 1 V
   			Headrest adjuster switch on (forward)	11 to 14 V
   Q26-1 (CUS-) - Body ground	B - Body ground	Cushion motor signal (rearward)	Cushion switch off	Below 1 V
   			Cushion switch on (rearward)	11 to 14 V
   Q26-2 (LFT-) - Body ground	B - Body ground	Rear lifter motor signal (downward)	Rear lifter switch off	Below 1 V
   			Rear lifter switch on (downward)	11 to 14 V
   Q26-3 (CUS+) - Body ground	R - Body ground	Cushion motor signal (forward)	Cushion switch off	Below 1 V
   			Cushion switch on (forward)	11 to 14 V
   Q26-5 (RCL-) - Body ground	B - Body ground	Reclining motor signal (rearward)	Reclining adjuster switch off	Below 1 V
   			Reclining switch on (downward)	11 to 14 V
   Q26-6 (FRV-) - Body ground	B - Body ground	Front tilt motor signal (downward)	Front vertical switch off	Below 1 V
   			Front vertical switch on (rearward)	11 to 14 V
   Q26-7 (FRV+) - Body ground	R - Body ground	Front vertical motor signal (upward)	Front vertical switch off	Below 1 V
   			Front vertical switch on (upward)	11 to 14 V
   Q26-8 (RCL+) - Body ground	R - Body ground	Reclining motor signal (upward)	Reclining switch off	Below 1 V
   			Reclining switch on (upward)	11 to 14 V
   Q26-29 (LFT+) - Body ground	B - Body ground	Rear lifter motor signal (upward)	Rear lifter switch off	Below 1 V
   			Rear lifter switch on (upward)	11 to 14 V
   Q27-3 (RCLF) - Body ground	W - Body ground	Reclining switch signal (forward)	Reclining switch off	11 to 14 V
   			Reclining switch on (forward)	Below 1 V
   Q27-4 (LVU) - Body ground	L - Body ground	Lumbar support adjuster switch signal (upward)	Lumbar support adjuster switch off	11 to 14 V
   			Lumbar support adjuster switch on (upward)	Below 1 V
   Q27-7 (CUSF) - Body ground	V - Body ground	Cushion switch signal (forward)	Cushion switch off	11 to 14 V
   			Cushion switch on (forward)	Below 1 V
   Q27-8 (CUSR) - Body ground	GR - Body ground	Cushion switch signal (rearward)	Cushion switch off	11 to 14 V
   			Cushion switch on (rearward)	Below 1 V
   Q27-9 (LFTU) - Body ground	BR - Body ground	Rear lifter switch signal (upward)	Rear lifter switch off	11 to 14 V
   			Rear lifter switch on (upward)	Below 1 V
   Q27-10 (LFTD) - Body ground	Y - Body ground	Rear lifter switch signal (downward)	Rear lifter switch off	11 to 14 V
   			Rear lifter switch on (downward)	Below 1 V
   Q27-11 (RCLR) - Body ground	B - Body ground	Power seat switch LH (slide switch (forward)) signal	Reclining switch off	11 to 14 V
   			Reclining switch on (rearward)	Below 1 V
   Q27-12 (FRVU) - Body ground	GR - Body ground	Front vertical switch signal (upward)	Front vertical switch off	11 to 14 V
   			Front vertical switch on (upward)	Below 1 V
   Q27-13 (LVD) - Body ground	LG - Body ground	Lumbar support adjuster switch signal (downward)	Lumbar support adjuster switch off	11 to 14 V
   			Lumbar support adjuster switch on (downward)	Below 1 V
   Q27-14 (LFLF) - Body ground	Y - Body ground	Lumbar support adjuster switch signal (forward)	Lumbar support adjuster switch off	11 to 14 V
   			Lumbar support adjuster switch on (forward)	Below 1 V
   Q27-19 (SLDF) - Body ground	R - Body ground	Slide switch signal (forward)	Slide switch off	11 to 14 V
   			Slide switch on (forward)	Below 1 V
   Q27-20 (SLDR) - Body ground	G - Body ground	Slide switch signal (rearward)	Slide switch off	11 to 14 V
   			Slide switch on (rearward)	Below 1 V
   Q27-21 (FRVD) - Body ground	BR - Body ground	Front vertical switch signal (downward)	Front vertical switch off	11 to 14 V
   			Front vertical switch on (downward)	Below 1 V
   Q27-22 (LFLR) - Body ground	SB - Body ground	Lumbar support adjuster switch signal (rearward)	Lumbar support adjuster switch off	11 to 14 V
   			Lumbar support adjuster switch on (rearward)	Below 1 V
   Q28-3 (POMG) ←→ Q28-4 (POM)	V - W-B	Lumbar support pump sub-assembly signal	Lumbar support pump sub-assembly operating	11 to 14 V
   Q28-5 (SLD+) - Body ground	R - Body ground	Slide motor signal (forward)	Slide switch off	Below 1 V
   			Slide switch on (forward)	11 to 14 V
   Q28-6 (SLD-) - Body ground	B - Body ground	Slide motor signal (rearward)	Slide switch off	Below 1 V
   			Slide switch on (rearward)	11 to 14 V
   Q28-7 (LIN) - Body ground	SB - Body ground	LIN communication line	Power switch on (IG)	Pulse generation
   Q28-10 (SSHD) - Body ground	Y - Body ground	Headrest position signal	Headrest up/down function operating	Pulse generation
   Q28-13 (SSRC) - Body ground	P - Body ground	Cushion position signal	Cushion length function operating	Pulse generation
   Q28-14 (SSRH) - Body ground	G - Body ground	Headrest position signal	Headrest front/rear function operating	Pulse generation
   Q28-15 (SSRL) - Body ground	LG - Body ground	Rear lifter position signal	Rear lifter function operating	Pulse generation
   Q28-16 (SGND) - Body ground	GR - Body ground	Sensor ground	Always	Below 1 Ω
   Q28-24 (SSRR) - Body ground	L - Body ground	Reclining position signal	Reaclining function operating	Pulse generation
   Q28-25 (SSFV) - Body ground	GR - Body ground	Front tilt position signal	Front tilt function operating	Pulse generation
   Q28-26 (SSRS) - Body ground	BR - Body ground	Slide position signal	Slide function operating	Pulse generation

for LHD:

1. Disconnect the H31 front multiplex network door ECU LH connector.

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
   H31-3 (SIG) - Body ground	B - Body ground	Ignition power supply (IG signal)	Power switch off → on (IG)	Below 1 V → 11 to 14 V
   H31-4 (CPUB) - Body ground	L - Body ground	Auxiliary battery power supply	Power switch off	11 to 14 V
   H31-6 (BDR) - Body ground	R - Body ground	Auxiliary battery power supply	Power switch off	11 to 14 V
   H31-1 (GND) - Body ground	W-B - Body ground	Ground	Always	Below 1 Ω

3. Reconnect the H31 front multiplex network door ECU LH connector.

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
   H31-24 (M3) - H31-26 (MSWE)	V - W-B	M3 switch signal for seat memory switch	M3 switch on	Below 1 V
   			M3 switch off	11 to 14 V
   H31-23 (M2) - H31-26 (MSWE)	G - W-B	M2 switch signal for seat memory switch	M2 switch on	Below 1 V
   			M2 switch off	11 to 14 V
   H31-22 (M1) - H31-26 (MSWE)	BE - W-B	M1 switch signal for seat memory switch	M1 switch on	Below 1 V
   			M1 switch off	11 to 14 V
   H31-25 (MM) - H31-26 (MSWE)	L - W-B	SET switch signal for seat memory switch	SET switch on	Below 1 V
   			SET switch off	11 to 14 V
   H31-26 (MSWE) - Body ground	LA-BR - Body ground	Ground	Always	Below 1 Ω

for RHD:

1. Disconnect the H12 front multiplex network door ECU RH connector.

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
   H12-3 (SIG) - Body ground	B - Body ground	Ignition power supply (IG signal)	Power switch off → on (IG)	Below 1 V → 11 to 14 V
   H12-4 (CPUB) - Body ground	L - Body ground	Auxiliary battery power supply	Power switch off	11 to 14 V
   H12-6 (BDR) - Body ground	R - Body ground	Auxiliary battery power supply	Power switch off	11 to 14 V
   H12-1 (GND) - Body ground	W-B - Body ground	Ground	Always	Below 1 Ω

3. Reconnect the H12 front multiplex network door ECU LH connector.

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
   H12-24 (M3) - H12-26 (MSWE)	V - W-B	M3 switch signal for seat memory switch	M3 switch on	Below 1 V
   			M3 switch off	11 to 14 V
   H12-23 (M2) - H12-26 (MSWE)	G - W-B	M2 switch signal for seat memory switch	M2 switch on	Below 1 V
   			M2 switch off	11 to 14 V
   H12-22 (M1) - H12-26 (MSWE)	BE - W-B	M1 switch signal for seat memory switch	M1 switch on	Below 1 V
   			M1 switch off	11 to 14 V
   H12-25 (MM) - H12-26 (MSWE)	L - W-B	SET switch signal for seat memory switch	SET switch on	Below 1 V
   			SET switch off	11 to 14 V
   H12-26 (MSWE) - Body ground	LA-BR - Body ground	Ground	Always	Below 1 Ω