Terminals Of ECM

1. ECM 
   Fig 1: Identifying ECM Connectors Terminals

   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 inspected. The standard voltage between the terminals is shown under "Specific Condition".

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

   CONNECTOR TERMINAL REFERENCE
   
   

   Symbols (Terminals No.)	Wiring Color	Terminal Description	Condition	Specified Condition
   D (E4-9) - E1 (E4-7)	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 (E4-8) - E1 (E4-7)	V - 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 (A6-4) - E1 (E4-7)	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 (A6-19) - E1 (E4-7)	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 (A6-30) - E1 (E4-7)	Y - 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 (A6-9) - E1 (E4-7)	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 (E4-6) - E1 (E4-7)	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 (E4-32) - E1 (E4-7)	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 (E4-4) - E1 (E4-7)	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+ (E4-13) - SLU- (E4-12)	L-Y - L-R	SLU solenoid signal	5th (lock up) or 6th (lockup) gear	Pulse generation (see  bwaveform 2)
   SR (E4-2) - E1 (E4-7)	G-W - BR	SR solenoid signal	1st, 2nd, 3rd or 4th gear	10 to 14 V
   ↑	↑	↑	5th or 6th gear	Below 1 V
   S4 (E4-16) - E1 (E4-7)	G-R - BR	S4 solenoid signal	5th or 6th gear	10 to 14 V
   ↑	↑	↑	1st, 2nd, 3rd or 4th gear	Below 1 V
   S3 (E4-17) - E1 (E4-7)	G - BR	S3 solenoid signal	1st, 2nd or 3rd gear	10 to 14 V
   ↑	↑	↑	4th, 5th or 6th gear	Below 1 V
   S2 (E4-18) - E1 (E4-7)	W - BR	S2 solenoid signal	1st, 2nd or 6th gear	10 to 14 V
   ↑	↑	↑	3rd, 4th or 5th gear	Below 1 V
   S1 (E4-19)-E1 (E4-7)	R - BR	S1 solenoid signal	1st gear	Below 1 V
   ↑	↑	↑	Except 1st gear	10 to 14 V
   SL2+ (E4-11) - SL2- (E4-10)	L-W - B-W	SL2 solenoid signal	Engine idle speed	Pulse generation (see  cwaveform 3)
   SL1+ (E4-25) - SL1- (E4-24)	Y - L	SL1 solenoid signal	5th or 6th gear	Pulse generation (see  dwaveform 4)
   SP2+ (E4-23) - SP2- (E4-22)	L - Y	Speed sensor (SP2) signal	Vehicle speed 20 km/h (12 mph)	Pulse generation (see  fwaveform 6)
   NT+ (E4-21) - NT- (E4-20)	R - G	Speed sensor (NT) signal	Engine idle speed	Pulse generation (see  ewaveform 5)
   SLT+ (E4-35) - SLT- (E4-34)	B - G-B	SLT solenoid signal	Engine idle speed	Pulse generation (see  awaveform 1)
   OIL (E4-27) - EOIL (E4-26)	G-Y - BR	ATF temperature sensor signal	ATF temperature: 115°C (239°F) or more	Below 1.5 V

   1. Waveform 1

      Reference: 

      WAVEFORM REFERENCE 1
      
      

      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
   2. Waveform 2

      Reference: 

      WAVEFORM REFERENCE 2
      
      

      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
   3. Waveform 3

      Reference: 

      WAVEFORM REFERENCE 3
      
      

      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
   4. Waveform 4

      Reference: 

      WAVEFORM REFERENCE 4
      
      

      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
   5. Waveform 5

      Reference: 

      WAVEFORM REFERENCE 5
      
      

      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

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   6. Waveform 6

      Reference: 

      WAVEFORM REFERENCE 6
      
      

      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

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Cowl Side J/B ECU (Multiplex network Body ECU) 
   Fig 8: Identifying Cowl Side J/B ECU Connectors Terminals (Multiplex Network Body ECU)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

HINT:

Each ECU 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 inspected. The standard voltage between the terminals is shown under "Specific Condition".

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