Terminals Of Ecu

CHECK FRONT POWER SEAT SWITCH LH

Fig 1: Identifying Front Power Seat Switch LH Connector Terminal Identification

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Disconnect the e45 and e46 switch connectors.

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

Terminal No. (Symbols)	Wiring Color	Terminal Description	Condition	Specified Condition
e45-6 (GND) - Body ground	W-B - Body ground	Ground	Always	Below 1 Ω
e45-7(+B) - e45-6 (GND)	B-R - W-B	Battery (ECU power source)	Always	11 to 14 V
e46-4 (SYSB) - e45-6 (GND)	B - W-B	Battery (ECU power source)	Always	11 to 14 V

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

Reconnect the e45 and e46 switch connectors.

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

Terminal No. (Symbols)	Wiring Color	Terminal Description	Condition	Specified Condition
e46-12 (SLD+) - e45-6 (GND)	B - W-B	Sliding motor signal (forward)	Seat moving forward using sliding switch	11 to 14 V
e46-12 (SLD+) - e45-6 (GND)	B - W-B	Sliding motor signal (forward)	Other	Below 1 V
e46-11 (SLD-) - e45-6 (GND)	W - W-B	Sliding motor signal (rearward)	Seat moving rearward using sliding switch	11 to 14 V
e46-11 (SLD-) - e45-6 (GND)	W - W-B	Sliding motor signal (rearward)	Other	Below 1 V
e46-10 (C+) - e45-6 (GND)	W - W-B	Seat cushion motor signal (forward)	Seat cushion moving forward using cushion switch	11 to 14 V
e46-10 (C+) - e45-6 (GND)	W - W-B	Seat cushion motor signal (forward)	Other	Below 1 V
e45-4 (C-) - e45-6 (GND)	R-B - W-B	Seat cushion motor signal (rearward)	Seat cushion moving rearward using cushion switch	11 to 14 V
e45-4 (C-) - e45-6 (GND)	R-B - W-B	Seat cushion motor signal (rearward)	Other	Below 1 V
e46-1 (FRV+) - e45-6 (GND)	R - W-B	Front vertical motor signal (upward)	Seat cushion front portion rising using front vertical switch	11 to 14 V
e46-1 (FRV+) - e45-6 (GND)	R - W-B	Front vertical motor signal (upward)	Other	Below 1 V
e45-12 (FRV-) - e45-6 (GND)	W - W-B	Front vertical motor signal (downward)	Seat cushion front portion lowering using front vertical switch	11 to 14 V
e45-12 (FRV-) - e45-6 (GND)	W - W-B	Front vertical motor signal (downward)	Other	Below 1 V
e46-3 (RCL+) - e45-6 (GND)	L - W-B	Reclining motor signal (forward)	Seatback moving forward using reclining switch	11 to 14 V
e46-3 (RCL+) - e45-6 (GND)	L - W-B	Reclining motor signal (forward)	Other	Below 1 V
e45-3 (RCL-) - e45-6 (GND)	B-W - W-B	Reclining motor signal (rearward)	Seatback moving rearward using reclining switch	11 to 14 V
e45-3 (RCL-) - e45-6 (GND)	B-W - W-B	Reclining motor signal (rearward)	Other	Below 1 V
e45-11 (H+) - e45-6 (GND)	G-B - W-B	Headrest motor signal (upward)	Headrest moving upward using headrest switch	11 to 14 V
e45-11 (H+) - e45-6 (GND)	G-B - W-B	Headrest motor signal (upward)	Other	Below 1 V
e45-8 (H-) - e45-6 (GND)	L - W-B	Headrest motor signal (downward)	Headrest moving downward using headrest switch	11 to 14 V
e45-8 (H-) - e45-6 (GND)	L - W-B	Headrest motor signal (downward)	Other	Below 1 V
e46-2 (RRV+) - e45-6 (GND)	B-R - W-B	Lifter motor signal (upward)	Seat rising using lifter switch	11 to 14 V
e46-2 (RRV+) - e45-6 (GND)	B-R - W-B	Lifter motor signal (upward)	Other	Below 1 V
e45-5 (RRV-) - e45-6 (GND)	Y - W-B	Lifter motor signal (downward)	Seat lowering using lifter switch	11 to 14 V
e45-5 (RRV-) - e45-6 (GND)	Y - W-B	Lifter motor signal (downward)	Other	Below 1 V
e45-9 (LV+) - e45-6 (GND)	R - W-B	Lumbar motor signal (upward)	Lumbar switch (upward) ON	11 to 14 V
e45-9 (LV+) - e45-6 (GND)	R - W-B	Lumbar motor signal (upward)	Other	Below 1 V
e45-2 (LV-) - e45-6 (GND)	L-R - W-B	Lumbar motor signal (downward)	Lumbar switch (downward) ON	11 to 14 V
e45-2 (LV-) - e45-6 (GND)	L-R - W-B	Lumbar motor signal (downward)	Other	Below 1 V
e45-10 (L+) - e45-6 (GND)	R-L - W-B	Lumbar motor signal (forward)	Lumbar switch (forward) ON	11 to 14 V
e45-10 (L+) - e45-6 (GND)	R-L - W-B	Lumbar motor signal (forward)	Other	Below 1 V
e45-1 (L-) - e45-6 (GND)	G-Y - W-B	Lumbar motor signal (rearward)	Lumbar switch (rearward) ON	11 to 14 V
e45-1 (L-) - e45-6 (GND)	G-Y - W-B	Lumbar motor signal (rearward)	Other	Below 1 V
e46-8 (PVCC) - e46-18 (SGND)	V - BR	Position sensor power supply	During power seat operation	7.2 to 8.8 V
e46-23 (SSRS) - e46-18 (SGND)	LG - BR	Slide direction position signal	During slide operation	0 to 8 V
e46-19 (SSFV) - e46-18 (SGND)	GR - BR	Front vertical direction position signal	During front vertical operation	0 to 8 V
e46-9 (SSRV) - e46-18 (SGND)	L - BR	Lifter position signal	During lifter operation	0 to 8 V
e46-22 (SSRR) - e46-18 (SGND)	GR - BR	Reclining position signal	During reclining operation	0 to 8 V
e46-21 (SSRH) - e46-18 (SGND)	BE - BR	Headrest position signal	During headrest operation	0 to 8 V
e46-20 (SSRC) - e46-18 (SGND)	Y - BR	Seat cushion position signal	During seat cushion operation	0 to 8 V
e46-15 (DBCL) - e45-6 (GND)	Y - W-B	Buckle switch signal	Engine switch off Driver side seat belt is unfastened	11 to 14 V
e46-15 (DBCL) - e45-6 (GND)	Y - W-B	Buckle switch signal	Engine switch off Driver side seat belt is fastened	Below 1 V
e46-16 (DRDC) - e45-6 (GND)	W - W-B	Buckle switch signal	Engine switch on (IG) Driver side seat belt is unfastened	11 to 14 V
e46-16 (DRDC) - e45-6 (GND)	W - W-B	Buckle switch signal	Engine switch on (IG) Driver side seat belt is fastened	Below 1 V

If the result is not as specified, the ECU may have a malfunction.

CHECK FRONT POWER SEAT SWITCH RH

Fig 2: Identifying Front Power Seat Switch RH Connector Terminal Identification

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Disconnect the e18 and e20 switch connectors.

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

Terminal No. (Symbols)	Wiring Color	Terminal Description	Condition	Specified Condition
e18-6 (GND) - Body ground	W-B - Body ground	Ground	Always	Below 1 Ω
e18-7 (+B) - e18-6 (GND)	B - W-B	Battery (ECU power source)	Always	11 to 14 V
e20-4 (SYSB) - e18-6 (GND)	R - W-B	Battery (ECU power source)	Always	11 to 14 V

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

Reconnect the e18 and e20 switch connectors.

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

Terminal No. (Symbols)	Wiring Color	Terminal Description	Condition	Specified Condition
e20-12 (SLD+) - e18-6 (GND)	B - W-B	Sliding motor signal (forward)	Seat moving forward using sliding switch	11 to 14 V
e20-12 (SLD+) - e18-6 (GND)	B - W-B	Sliding motor signal (forward)	Other	Below 1 V
e20-11 (SLD-) - e18-6 (GND)	R - W-B	Sliding motor signal (rearward)	Seat moving rearward using sliding switch	11 to 14 V
e20-11 (SLD-) - e18-6 (GND)	R - W-B	Sliding motor signal (rearward)	Other	Below 1 V
e20-1 (FUP) - e18-6 (GND)	R - W-B	Front vertical motor signal (upward)	Seat cushion front portion rising using front vertical switch	11 to 14 V
e20-1 (FUP) - e18-6 (GND)	R - W-B	Front vertical motor signal (upward)	Other	Below 1 V
e18-12 (FDWN) - e18-6 (GND)	L - W-B	Front vertical motor signal (downward)	Seat cushion front portion lowering using front vertical switch	11 to 14 V
e18-12 (FDWN) - e18-6 (GND)	L - W-B	Front vertical motor signal (downward)	Other	Below 1 V
e20-3 (RCL+) - e18-6 (GND)	L - W-B	Reclining motor signal (forward)	Seatback moving forward using reclining switch	11 to 14 V
e20-3 (RCL+) - e18-6 (GND)	L - W-B	Reclining motor signal (forward)	Other	Below 1 V
e18-3 (RCL-) - e18-6 (GND)	B-W - W-B	Reclining motor signal (rearward)	Seatback moving rearward using reclining switch	11 to 14 V
e18-3 (RCL-) - e18-6 (GND)	B-W - W-B	Reclining motor signal (rearward)	Other	Below 1 V
e18-11 (H+) - e18-6 (GND)	W - W-B	Headrest motor signal (upward)	Headrest moving upward using headrest switch	11 to 14 V
e18-11 (H+) - e18-6 (GND)	W - W-B	Headrest motor signal (upward)	Other	Below 1 V
e18-8 (H-) - e18-6 (GND)	Y - W-B	Headrest motor signal (downward)	Headrest moving downward using headrest switch	11 to 14 V
e18-8 (H-) - e18-6 (GND)	Y - W-B	Headrest motor signal (downward)	Other	Below 1 V
e20-2 (RUP) - e18-6 (GND)	B - W-B	Lifter motor signal (upward)	Seat rising using lifter switch	11 to 14 V
e20-2 (RUP) - e18-6 (GND)	B - W-B	Lifter motor signal (upward)	Other	Below 1 V
e18-5 (RDWN) - e18-6 (GND)	G-B - W-B	Lifter motor signal (downward)	Seat lowering using lifter switch	11 to 14 V
e18-5 (RDWN) - e18-6 (GND)	G-B - W-B	Lifter motor signal (downward)	Other	Below 1 V
e18-10 (L+) - e18-6 (GND)	R-L - W-B	Lumbar motor signal (forward)	Lumbar switch (Forward) ON	11 to 14 V
e18-10 (L+) - e18-6 (GND)	R-L - W-B	Lumbar motor signal (forward)	Other	Below 1 V
e18-1 (L-) - e18-6 (GND)	G-Y - W-B	Lumbar motor signal (rearward)	Lumbar switch (Rearward) ON	11 to 14 V
e18-1 (L-) - e18-6 (GND)	G-Y - W-B	Lumbar motor signal (rearward)	Other	Below 1 V
e20-8 (PVCC) - e20-18 (SGND)	V - BR	Position sensor power supply	Power seat operation	7.2 to 8.8 V
e20-14 (HRRS) - e18-6 (GND)	W - W-B	Front power seat switch signal	Full front switch (Rear) OFF	11 to 14 V
e20-14 (HRRS) - e18-6 (GND)	W - W-B	Front power seat switch signal	Full front switch (Rear) ON	Below 1 V
e20-15 (HRFS) - e18-6 (GND)	R - W-B	Front power seat switch signal	Full front switch (Front) OFF	11 to 14 V
e20-15 (HRFS) - e18-6 (GND)	R - W-B	Front power seat switch signal	Full front switch (Front) ON	Below 1 V
e20-16 (SLDR) - e18-6 (GND)	L - W-B	Front power seat switch signal	Slide switch (Rear) OFF	11 to 14 V
e20-16 (SLDR) - e18-6 (GND)	L - W-B	Front power seat switch signal	Slide switch (Rear) ON	Below 1 V
e20-17 (SLDF) - e18-6 (GND)	G - W-B	Front power seat switch signal	Slide switch (Front) OFF	11 to 14 V
e20-17 (SLDF) - e18-6 (GND)	G - W-B	Front power seat switch signal	Slide switch (Front) ON	Below 1 V
e20-9 (SSRL) - e20-18 (SGND)	LG - BR	Lifter position signal	During lifter operation	0 to 8 V
e20-20 (SSFV) - e20-18 (SGND)	GR - BR	Front vertical direction position signal	During front vertical operation	0 to 8 V
e20-21 (SSRH) - e20-18 (SGND)	BE - BR	Headrest position signal	During headrest operation	0 to 8 V
e20-22 (SSRR) - e20-18 (SGND)	LG - BR	Reclining position signal	During reclining operation	0 to 8 V
e20-23 (SSRS) - e20-18 (SGND)	LG - BR	Slide direction position signal	During slide operation	0 to 8 V

If the result is not as specified, the ECU may have a malfunction.

CHECK FRONT DOOR ECU LH

Fig 3: Identifying Front Door ECU LH Connector Terminal Identification

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Disconnect the N10 ECU connector.

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

Terminal No. (Symbols)	Wiring Color	Terminal Description	Condition	Specified Condition
N10-11 (CPUB) - N10-1 (GND)	B - W-B	Battery (ECU power source)	Always	11 to 14 V
N10-3 (SIG) - N10-1 (GND)	L - W-B	Ignition power supply	Engine switch off	Below 1 V
N10-3 (SIG) - N10-1 (GND)	L - W-B	Ignition power supply	Engine switch on (IG)	11 to 14 V
N10-6 (BDR) - N10-1 (GND)	BE - W-B	Battery (ECU power source)	Always	11 to 14 V
N10-1 (GND) - 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.

Reconnect the N10 ECU connector.

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

Terminal No. (Symbols)	Wiring Color	Terminal Description	Condition	Specified Condition
P10-13 (M1) - P10-29 (MSWE)	R - V	Memory switch M1 signal	Memory switch M1 OFF	11 to 14 V
P10-13 (M1) - P10-29 (MSWE)	R - V	Memory switch M1 signal	Memory switch M1 ON	Below 1 V
P10-14 (M2) - P10-29 (MSWE)	B - V	Memory switch M2 signal	Memory switch M2 OFF	11 to 14 V
P10-14 (M2) - P10-29 (MSWE)	B - V	Memory switch M2 signal	Memory switch M2 ON	Below 1 V
P10-15 (M3) - P10-29 (MSWE)	Y - V	Memory switch M3 signal	Memory switch M3 OFF	11 to 14 V
P10-15 (M3) - P10-29 (MSWE)	Y - V	Memory switch M3 signal	Memory switch M3 ON	Below 1 V
P10-16 (MM) - P10-29 (MSWE)	BE - V	Memory SET switch signal	Memory SET switch OFF	11 to 14 V
P10-16 (MM) - P10-29 (MSWE)	BE - V	Memory SET switch signal	Memory SET switch ON	Below 1 V

If the result is not as specified, the ECU may have a malfunction.

CHECK FRONT DOOR ECU RH

Fig 4: Identifying Front Door ECU RH Connector Terminal Identification

Disconnect the N1 ECU connector.

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

Terminal No. (Symbols)	Wiring Color	Terminal Description	Condition	Specified Condition
N1-11 (CPUB) - N1-1 (GND)	R - W-B	Battery (ECU power source)	Always	11 to 14 V
N1-3 (SIG) - N1-1 (GND)	V - W-B	Ignition power supply	Engine switch off	Below 1 V
N1-3 (SIG) - N1-1 (GND)	V - W-B	Ignition power supply	Engine switch on (IG)	11 to 14 V
N1-6 (BDR) - N1-1 (GND)	BE - W-B	Battery (ECU power source)	Always	11 to 14 V
N1-1 (GND) - 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.

Reconnect the N1 ECU connector.

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

Terminal No. (Symbols)	Wiring Color	Terminal Description	Condition	Specified Condition
P4-13 (M1) - P4-29 (MSWE)	R - V	Memory switch M1 signal	Memory switch M1 OFF	11 to 14 V
P4-13 (M1) - P4-29 (MSWE)	R - V	Memory switch M1 signal	Memory switch M1 ON	Below 1 V
P4-14 (M2) - P4-29 (MSWE)	B - V	Memory switch M2 signal	Memory switch M2 OFF	11 to 14 V
P4-14 (M2) - P4-29 (MSWE)	B - V	Memory switch M2 signal	Memory switch M2 ON	Below 1 V
P4-15 (M3) - P4-29 (MSWE)	Y - V	Memory switch M3 signal	Memory switch M3 OFF	11 to 14 V
P4-15 (M3) - P4-29 (MSWE)	Y - V	Memory switch M3 signal	Memory switch M3 ON	Below 1 V
P4-16 (MM) - P4-29 (MSWE)	BE - V	Memory SET switch signal	Memory SET switch OFF	11 to 14 V
P4-16 (MM) - P4-29 (MSWE)	BE - V	Memory SET switch signal	Memory SET switch ON	Below 1 V

If the result is not as specified, the ECU may have a malfunction.