Terminals Of ECM

ECM

Fig 1: Identifying Terminals Of ECM

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

HINT:

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

In the table, first follow the information under "Condition". Look under "Symbols (Terminal No.)" 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 ECM terminals.

TERMINALS REFERENCE CHART

Symbols (Terminal No.)	Wiring Color	Terminal Description	Condition	Specified Condition
D (E7-9) - E1 (E7-7)	R-W - BR	D shift position switch signal	Engine switch on (IG) and shift lever D and S position	10 to 14 V
↑	↑	↑	Engine switch on (IG) and shift lever except D and S position	Below 1 V
R (E7-8) - E1 (E7-7)	R-BR	R shift position switch signal	Engine switch on (IG) and shift lever R position	10 to 14 V
↑	↑	↑	Engine switch on (IG) and shift lever except R position	Below 1 V
STP (A7-4) - E1 (E7-7)	R-B - BR	Stop light switch signal	Brake pedal is depressed	7.5 to 14 V
↑	↑	↑	Brake pedal is released	Below 1.5 V
SFTD (A7-19) - E1 (E7-7)	O - BR	Down shift switch signal	Engine switch on (IG) and shift lever S position	10 to 14 V
↑	↑	↑	Engine switch on (IG) and shift lever "-" position (Down shift)	Below 1 V
SFTU (A7-30) - E1 (E7-7)	Y-R - BR	Up shift switch signal	Engine switch on (IG) and shift lever S position	10 to 14 V
↑	↑	↑	Engine switch on (IG) and shift lever "+" position (Up shift)	Below 1 V
S (A7-9) - E1 (E7-7)	W-G - BR	S shift position switch signal	Engine switch on (IG) and shift lever S position	10 to 14 V
↑	↑	↑	Engine switch on (IG) and shift lever except S position	Below 1 V
P (E7-6) - E1 (E7-7)	W - BR	Park position switch signal	Engine switch on (IG) and shift lever P position	10 to 14 V
↑	↑	↑	Engine switch on (IG) and shift lever except P position	Below 1 V
N (E7-32) - E1 (E7-7)	G-R - BR	Neutral position switch signal	Engine switch on (IG) and shift lever N position	10 to 14 V
↑	↑	↑	Engine switch on (IG) and shift lever except N position	Below 1 V
STAR (E7-4) - E1 (E7-7)	L-Y - BR	Park neutral switch signal	Engine switch on (IG) and shift lever P and N position	Below 1 V
↑	↑	↑	Engine switch on (IG) and shift lever except P and N position	10 to 14 V
SLU+ (E7-13) - SLU- (E7-12)	L-Y - L-R	SLU solenoid signal	5th (lock-up) or 6th (lockup) gear	Pulse generation (See bwaveform 2)
SR (E7-2) - E1 (E7-7)	G-W - BR	SR solenoid signal	1st, 2nd, 3rd or 4th gear	10 to 14 V
↑	↑	↑	5th or 6th gear	Below 1 V
S4 (E7-16) - E1 (E7-7)	G-R - BR	S4 solenoid signal	5th or 6th gear	10 to 14 V
↑	↑	↑	1st, 2nd, 3rd or 4th gear	Below 1 V
S3 (E7-17) - E1 (E7-7)	G-BR	S3 solenoid signal	1st, 2nd or 3rd gear	10 to 14 V
↑	↑	↑	4th, 5th or 6th gear	Below 1 V
S2 (E7-18) - E1 (E7-7)	W-BR	S2 solenoid signal	1st, 2nd or 6th gear	10 to 14 V
↑	↑	↑	3rd, 4th or 5th gear	Below 1 V
S1 (E7-19) - E1 (E7-7)	R - BR	S1 solenoid signal	1st gear	Below 1 V
↑	↑	↑	Except 1st gear	10 to 14 V
SL2+ (E7-11) - SL2- (E7-10)	L-W - B-W	SL2 solenoid signal	Engine idle speed	Pulse generation (See cwaveform 3)
SL1+ (E7-25) - SL1- (E7-24)	Y-L	SL1 solenoid signal	5th or 6th gear	Pulse generation (See dwaveform 4)
SP2+ (E7-23) - SP2- (E7-22)	L-Y	Speed sensor (SP2) signal	Vehicle speed 20 km/h (12 mph)	Pulse generation (See fwaveform 6)
NT+ (E7-21) - NT- (E7-20)	R-G	Speed sensor (NT) signal	Engine idle speed	Pulse generation (See ewaveform 5)
SLT+ (E7-35) - SLT- (E7-34)	B-G-B	SLT solenoid signal	Engine idle speed	Pulse generation (See awaveform 1)
OIL (E7-27) - EOIL (E7-26)	G-Y - BR	ATF temperature sensor signal	ATF temperature: 115°C (239°F) or more	Below 1.5 V

Waveform 1

Reference:

WAVEFORM 1 REFERENCE

Terminal	SLT+ - SLT-
Tool setting	5 V/DIV, 1 ms/DIV
Vehicle condition	Engine idle speed

Fig 2: Identifying Waveform 1

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Waveform 2

Reference:

WAVEFORM 2 REFERENCE

Terminal	SLU+ - SLU-
Tool setting	5 V/DIV, 1 ms/DIV
Vehicle condition	5th (lock-up) or 6th (lock-up) gear

Fig 3: Identifying Waveform 2

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Waveform 3

Reference:

WAVEFORM 3 REFERENCE

Terminal	SL2+ - SL2-
Tool setting	5 V/DIV, 1 ms/DIV
Vehicle condition	Engine idle speed

Fig 4: Identifying Waveform 3

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Waveform 4

Reference:

WAVEFORM 4 REFERENCE

Terminal	SL1 +- SL1-
Tool setting	5 V/DIV, 1 ms/DIV
Vehicle condition	5th or 6th gear

Fig 5: Identifying Waveform 4

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Waveform 5

Reference:

WAVEFORM 5 REFERENCE

Terminal	NT+ - NT-
Tool setting	1 V/DIV, 2 ms/DIV
Vehicle condition	Engine idle speed (P or N position)

Fig 6: Identifying Waveform 5

Waveform 6

Reference:

WAVEFORM 6 REFERENCE

Terminal	SP2+ - SP2-
Tool setting	2 V/DIV, 20 ms/DIV
Vehicle condition	Vehicle speed 20 km/h (12 mph)

Fig 7: Identifying Waveform 6

COWL SIDE J/B RH ECU (MAIN BODY ECU)

Fig 8: Identifying Cowl Side J/B RH ECU (Main Body ECU) Connector Terminals

HINT:

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

TERMINALS REFERENCE CHART

Symbols (Terminal No.)	Wiring Color	Terminal Description	Condition	Specified Condition
PWR (K68-18) - 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*
SNOW (K68-17) - Body ground	L	SNOW switch signal	Engine switch on (IG) and Pattern select switch (SNOW) ON	0 to 1.5 V
↑	↑	↑	Engine switch on (IG) and Pattern select switch (SNOW) OFF	Pulse generation*
HINT: *: 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 1.5 V.)