Terminals Of Ecu

TCM

Fig 1: Identifying Terminals Of ECU

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

HINT:

Each TCM terminal's standard voltage is shown in the table below.

In the table, first follow the information under "Condition". Look under "Terminal No. (Symbols)" for the terminals to be inspected. The standard voltage between the terminals is shown under "Specified Condition".

Use the illustration above as a reference for the TCM terminals.

TERMINALS REFERENCE CHART

Terminal No. (Symbols)	Wiring Color	Terminal Description	Condition	Specified Condition
A54-3 (P) - A54-2 (E1)	W - BR	Park position switch signal	Engine switch on (IG) and shift lever on P	11 to 14 V
A54-3 (P) - A54-2 (E1)	W - BR	Park position switch signal	Engine switch on (IG) and shift lever not on P	Below 1 V
A54-11 (R) - A54-2 (E1)	G - BR	R shift position switch signal	Engine switch on (IG) and shift lever on R	11 to 14 V
A54-11 (R) - A54-2 (E1)	G - BR	R shift position switch signal	Engine switch on (IG) and shift lever not on R	Below 1 V
A54-10 (N) - A54-2 (E1)	G-R - BR	N shift position switch signal	Engine switch on (IG) and shift lever on N	11 to 14 V
A54-10 (N) - A54-2 (E1)	G-R - BR	N shift position switch signal	Engine switch on (IG) and shift lever not on N	Below 1 V
A54-20 (D) - A54-2 (E1)	G-Y - BR	D shift position switch signal	Engine switch on (IG) and shift lever on D or S	11 to 14 V
A54-20 (D) - A54-2 (E1)	G-Y - BR	D shift position switch signal	Engine switch on (IG) and shift lever not on D or S	Below 1 V
A54-23 (STP) - A54-2 (E1)	R-B - BR	Stop light switch signal	Brake pedal is depressed	7.5 to 14 V
A54-23 (STP) - A54-2 (E1)	R-B - BR	Stop light switch signal	Brake pedal is released	Below 1 V
E88-12 (THO1) - E88-13 (E2)	G-Y - BR	ATF temperature sensor signal	ATF temperature 115°C (239°F) or more	Below 1.5 V
E88-6 (SL1+) - E88-5 (SL1-)	Y - L	Shift solenoid valve SL1 signal	1st, 2nd, 3rd, 4th or 5th gear	Pulse generation (see awaveform 1)
E88-4 (SL2+) - E88-14 (SL2-)	BR - Y	Shift solenoid valve SL2 signal	5th, 6th, 7th or 8th gear	Pulse generation (see bwaveform 2)
E88-26 (SL3+) - E88-25 (SL3-)	L - B	Shift solenoid valve SL3 signal	3rd or 7th gear	Pulse generation (see cwaveform 3)
E88-17 (SL4+) - E88-16 (SL4-)	B - W	Shift solenoid valve SL4 signal	4th or 6th gear	Pulse generation (see dwaveform 4)
E88-3 (SL5+) - E88-10 (SL5-)	L - BR	Shift solenoid valve SL5 signal	2nd or 8th gear	Pulse generation (see ewaveform 5)
E88-1 (SLT+) - E88-7 (SLT-)	B - G	Shift solenoid valve SLT signal	Engine idling	Pulse generation (see fwaveform 6)
E88-2 (SLU+) - E88-8 (SLU-)	W - L-R	Shift solenoid valve SLU signal	4th, 5th, 6th, 7th or 8th gear (Flex lock-up ON)	Pulse generation (see gwaveform 7)
E88-24 (SL) - A54-2 (E1)	L-R - BR	Shift solenoid valve SL signal	All gears	11 to 14 V
E88-15 (SR) - A54-2 (E1)	G - BR	Shift solenoid valve SR signal	All gears	11 to 14 V
E88-21 (NTB) - A54-2 (E1)	G-W - BR	Power source for sensor (specific voltage)	Engine switch on (IG)	11 to 14 V
E88-20 (NTO) - A54-2 (E1)	B-R - BR	Speed sensor NT signal	Engine idling (shift lever on P or N)	Pulse generation (see hwaveform 8)
E88-19 (NC3B) - A54-2 (E1)	G - BR	Power source for sensor (specific voltage)	Engine switch on (IG)	11 to 14 V
E88-18 (NC3O) - A54-2 (E1)	R - BR	Speed sensor NC3 signal	Engine idling (shift lever on P or N)	Pulse generation (see iwaveform 9)
E88-23 (SP2B) - A54-2 (E1)	Y - BR	Power source for sensor (specific voltage)	Engine switch on (IG)	11 to 14 V
E88-22 (SP2O) - A54-2 (E1)	L - BR	Speed sensor SP2 signal	Vehicle speed 20 km/h (12 mph)	Pulse generation (see jwaveform 10)
E88-9 (TPS1) - A54-2 (E1)	L - BR	Oil pressure switch signal	6th to 8th gear	11 to 14 V
E88-9 (TPS1) - A54-2 (E1)	L - BR	Oil pressure switch signal	1st to 5th gear	Below 1 V
A54-15 (STA) - A54-2 (E1)	R - BR	Starter signal	Cranking (shift lever on P or N, engine switch start)	11 to 14 V
A54-15 (STA) - A54-2 (E1)	R - BR	Starter signal	Engine switch on (IG) and shift lever P or N	Below 2 V
A54-16 (IG2) - A54-2 (E1)	R - BR	Engine switch	Engine switch on (IG)	11 to 14 V
A54-6 (BATT) - A54-2 (E1)	L - BR	Battery (for measuring battery voltage and for TCM memory)	Always	11 to 14 V
A54-5 (+B) - A54-2 (E1)	B-R - BR	Power source of TCM	Engine switch on (IG)	11 to 14 V
A54-21 (CAN+) - A54-2 (E1)	B - BR	CAN communication line	Engine switch on (IG)	Pulse generation (see kwaveform 11)
A54-13 (CAN-) - A54-2 (E1)	W - BR	CAN communication line	Engine switch on (IG)	Pulse generation (see lwaveform 12)
A54-2 (E1) - Body ground	BR - Body ground	Ground	Always	Below 1 Ω
A54-1 (E01) - Body ground	BR - Body ground	Ground	Always	Below 1 Ω

Using an oscilloscope, check waveform 1.

Reference:

WAVEFORM 1 REFERENCE

Item	Content
Terminal No. (Symbols)	E88-6 (SL1+) - E88-5 (SL1-)
Tool setting	5 V/DIV., 1 msec./DIV.
Condition	1st, 2nd, 3rd, 4th or 5th gear

Fig 2: Identifying Waveform 1

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Using an oscilloscope, check waveform 2.

Reference:

WAVEFORM 2 REFERENCE

Item	Content
Terminal No. (Symbols)	E88-4 (SL2+) - E88-14 (SL2-)
Tool setting	5 V/DIV., 1 msec./DIV.
Condition	5th, 6th, 7th or 8th gear

Fig 3: Identifying Waveform 2

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Using an oscilloscope, check waveform 3.

Reference:

WAVEFORM 3 REFERENCE

Item	Content
Terminal No. (Symbols)	E88-26 (SL3+) - E88-25 (SL3-)
Tool setting	5 V/DIV., 1 msec./DIV.
Condition	3rd or 7th gear

Fig 4: Identifying Waveform 3

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Using an oscilloscope, check waveform 4.

Reference:

WAVEFORM 4 REFERENCE

Item	Content
Terminal No. (Symbols)	E88-17 (SL4+) - E88-16 (SL4-)
Tool setting	5 V/DIV., 1 msec./DIV.
Condition	4th or 6th gear

Fig 5: Identifying Waveform 4

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Using an oscilloscope, check waveform 5.

Reference:

WAVEFORM 5 REFERENCE

Item	Content
Terminal No. (Symbols)	E88-3 (SL5+) - E88-10 (SL5-)
Tool setting	5 V/DIV., 1 msec./DIV.
Condition	2nd or 8th gear

Fig 6: Identifying Waveform 5

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Using an oscilloscope, check waveform 6.

Reference:

WAVEFORM 6 REFERENCE

Item	Content
Terminal No. (Symbols)	E88-1 (SLT+) - E88-7 (SLT-)
Tool setting	5 V/DIV, 1 msec./DIV.
Condition	Engine idling

Fig 7: Identifying Waveform 6

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Using an oscilloscope, check waveform 7.

Reference:

WAVEFORM 7 REFERENCE

Item	Content
Terminal No. (Symbols)	E88-2 (SLU+) - E88-8 (SLU-)
Tool setting	5 V/DIV., 1 msec./DIV.
Condition	4th, 5th, 6th, 7th or 8th gear (Flex lock-up ON)

Fig 8: Identifying Waveform 7

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Using an oscilloscope, check waveform 8.

Reference:

WAVEFORM 8 REFERENCE

Item	Content
Terminal No. (Symbols)	E88-20 (NTO) - A54-2 (E1)
Tool setting	1 V/DIV., 2 msec./DIV.
Condition	Engine idling (shift lever on P or N)

Fig 9: Identifying Waveform 8

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Using an oscilloscope, check waveform 9.

Reference:

WAVEFORM 9 REFERENCE

Item	Content
Terminal No. (Symbols)	E88-18 (NC3O) - A54-2 (E1)
Tool setting	1 V/DIV., 2 msec./DIV.
Condition	Engine idling (shift lever on P or N)

Fig 10: Identifying Waveform 9

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Using an oscilloscope, check waveform 10.

Reference:

WAVEFORM 10 REFERENCE

Item	Content
Terminal No. (Symbols)	E88-22 (SP2O) - A54-2 (E1)
Tool setting	1 V/DIV., 2 msec./DIV.
Condition	Vehicle speed 20 km/h (12 mph)

Fig 11: Identifying Waveform 10

Using an oscilloscope, check waveform 11.

Reference:

WAVEFORM 11 REFERENCE

Item	Content
Terminal No. (Symbols)	A54-21 (CAN+) - A54-2 (E1)
Tool setting	1 V/DIV., 10 msec./DIV.
Condition	Engine is stopped, engine switch on (IG)

Fig 12: Identifying Waveform 11

Using an oscilloscope, check waveform 12.

Reference:

WAVEFORM 12 REFERENCE

Item	Content
Terminal No. (Symbols)	A54-13 (CAN-) - A54-2 (E1)
Tool setting	1 V/DIV., 10 msec./DIV.
Condition	Engine is stopped, engine switch on (IG)

Fig 13: Identifying Waveform 12

ECM

Fig 14: Identifying ECM Connector Terminals

HINT:

Each ECM terminal's standard voltage is shown in the table below.

Use the illustration above as a reference for the ECM terminals.

TERMINALS REFERENCE CHART

Terminal No. (Symbols)	Wiring Color	Terminal Description	Condition	Specified Condition
A7-16 (S) - E86-1 (E1)	R - W-B	S shift position switch signal	Engine switch on (IG) and shift lever on S	11 to 14 V
A7-16 (S) - E86-1 (E1)	R - W-B	S shift position switch signal	Engine switch on (IG) and shift lever not on S	Below 1 V
A7-8 (SFTU) - E86-1 (E1)	Y - W-B	Up-shift shift position switch signal	Engine switch on (IG) and shift lever on S	11 to 14 V
A7-8 (SFTU) - E86-1 (E1)	Y - W-B	Up-shift shift position switch signal	Engine switch on (IG) and shift lever in "+" position (up-shift)	Below 1 V
A7-7 (SFTD) - E86-1 (E1)	O - W-B	Down-shift position switch signal	Engine switch on (IG) and shift lever on S	11 to 14 V
A7-7 (SFTD) - E86-1 (E1)	O - W-B	Down-shift position switch signal	Engine switch on (IG) and shift lever in "-" position (down-shift)	Below 1 V
A6-14 (KD) - E86-1 (E1)	P-L - W-B	Kick-down switch signal	Engine switch on (IG) and Accelerator pedal is depressed	Below 1 V
A6-14 (KD) - E86-1 (E1)	P-L - W-B	Kick-down switch signal	Engine switch on (IG) and Accelerator pedal is released	11 to 14 V

Cowl Side J/B ECU (Main Body ECU)

Fig 15: Identifying Terminals Of Cowl Side J/B ECU (Main Body ECU)

HINT:

Each ECU terminal's standard voltage is shown in the table below.

In the table, first follow the information under "Condition". Look under "Terminal No. (Symbols)" for the terminals to inspected. The standard voltage between the terminals is shown under "Specific Condition".

Use the illustration above as a reference for the ECU terminals.

TERMINALS REFERENCE CHART

Terminal No. (Symbols)	Wiring Color	Terminal Description	Condition	Specified Condition
K68-18 (PWR) - Body ground	P	PWR switch signal	Engine switch on (IG) and Pattern select switch (PWR) ON	0 to 1.5 V
↑	↑	↑	Engine switch on (IG) and Pattern select switch (PWR) OFF	Pulse generation^*1
K68-17 (SNOW) - Body ground	L	SNOW switch signal	Engine switch on (IG) and Press continuously pattern select switch (SNOW) ON	0 to 1.5 V
↑	↑	↑	Engine switch on (IG) and Release pattern select switch (SNOW) OFF	Pulse generation*1
HINT: *1: Voltage is input intermittently as this is an intermittent circuit. (Voltage varies between a peak of 7.5 to 14 V and a low of 0 to 1.5V.)