Terminals Of ECM

1. ECM 
   Fig 1: Identifying ECM Terminals

   Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

   HINT:

   Each ECM terminal's standard voltage is shown in TERMINAL CONDITION SPECIFIED CONDITION TABLE  .

   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 Fig 1 as a reference for the ECM terminals.

   TERMINAL CONDITION SPECIFIED CONDITION TABLE
   
   

   Symbols (Terminals No.)	Wiring Color	Terminal Description	Condition	Specified Condition
   D (E4-9) - E1 (E4-7)	BR - BR	D shift position switch signal	Engine switch on (IG) and shift lever D and S position	10 to 14 V
   R (E4-8) - E1 (E4-7)	V - BR	R shift position switch signal	Engine switch on (IG) and shift lever except D and S position	Below 1 V
   			Engine switch on (IG) and shift lever R position	10 to 14 V
   STP (A6-4) - E1 (E4-7)	R-B - BR	Stop light switch signal	Engine switch on (IG) and shift lever except R position	Below 1 V
   			Brake pedal is depressed	7.5 to 14 V
   SFTD (A6-19) - E1 (E4-7)	O - BR	Down shift switch signal	Brake pedal is released	Below 1.5 V
   			Engine switch on (IG) and shift lever S position	10 to 14 V
   SFTU (A6-30) - E1 (E4-7)	Y - BR	Up shift switch signal	Engine switch on (IG) and shift lever "-" position (Down shift)	Below 1 V
   			Engine switch on (IG) and shift lever S position	10 to 14 V
   S (A6-9) - E1 (E4-7)	W-G - BR	S shift position switch signal	Engine switch on (IG) and shift lever "+" position (Up shift)	Below 1 V
   			Engine switch on (IG) and shift lever S position	10 to 14 V
   P (E4-6) - E1 (E4-7)	B - BR	Park position switch signal	Engine switch on (IG) and shift lever except S position	Below 1 V
   			Engine switch on (IG) and shift lever P position	10 to 14 V
   N (E4-32) - E1 (E4-7)	P - BR	Neutral position switch signal	Engine switch on (IG) and shift lever except P position	Below 1 V
   			Engine switch on (IG) and shift lever N position	10 to 14 V
   STAR (E4-4) - E1 (E4-7)	L - BR	Park neutral switch signal	Engine switch on (IG) and shift lever except N position	Below 1 V
   			Engine switch on (IG) and shift lever P and N position	Below 1 V
   SLU+ (E4-13) - SLU- (E4-12)	L - R	SLU solenoid signal	Engine switch on (IG) and shift lever except P and N position	10 to 14 V
   			5th (lock-up) or 6th (lockup) gear	Pulse generation (See  b )
   SR (E4-2) - E1 (E4-7)	V - BR	SR solenoid signal	1st, 2nd, 3rd or 4th gear	10 to 14 V
   S4 (E4-16) - E1 (E4-7)	P - BR	S4 solenoid signal	5th or 6th gear	Below 1 V
   			5th or 6th gear	10 to 14 V
   S3 (E4-17) - E1 (E4-7)	B - BR	S3 solenoid signal	1st, 2nd, 3rd or 4th gear	Below 1 V
   			1st, 2nd or 3rd gear	10 to 14 V
   S2 (E4-18) - E1 (E4-7)	W - BR	S2 solenoid signal	4th, 5th or 6th gear	Below 1 V
   			1st, 2nd or 6th gear	10 to 14 V
   S1 (E4-19) - E1 (E4-7)	R - BR	S1 solenoid signal 1st gear	3rd, 4th or 5th gear	Below 1 V
   			Ist gear	Below 1 V
   SL2+ (E4-11) - SL2- (E4-10)	B - P	SL2 solenoid signal	Except 1st gear	10 to 14 V
   			Engine idle speed	Pulse generation (See  c )
   SL1+ (E4-25) - SL1- (E4-24)	BR - W	SL1 solenoid signal	5th or 6th gear	Pulse generation (See  d )
   SP2+ (E4-23) - SP2- (E4-22)	L - Y	Speed sensor (SP2) signal	Vehicle speed 20 km/h (12 mph)	Pulse generation (See  f )
   NT+ (E4-21) - NT- (E4-20)	L - G	Speed sensor (NT) signal	Engine idle speed	Pulse generation (See  e )
   SLT+ (E4-35) - SLT- (E4-34)	V - BR	SLT solenoid signal	Engine idle speed	Pulse generation (See  a )
   OIL (E4-27) - EOIL (E4-26)	Y - G	ATF temperature sensor signal	ATF temperature: 115°C (239°F) or more	Below 1.5 V

   1. Waveform 1

      Reference: 

      WAVEFORM 1 TABLE
      
      

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

      Fig 2: Identifying Oscilloscope Voltage Waveform Signal (1 Of 6)

      Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
   2. Waveform 2

      Reference: 

      WAVEFORM 2 TABLE
      
      

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

      Fig 3: Identifying Oscilloscope Voltage Waveform Signal (2 Of 6)

      Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
   3. Waveform 3

      Reference: 

      WAVEFORM 3 TABLE
      
      

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

      Fig 4: Identifying Oscilloscope Voltage Waveform Signal (3 Of 6)

      Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
   4. Waveform 4

      Reference: 

      WAVEFORM 4 TABLE
      
      

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

      Fig 5: Identifying Oscilloscope Voltage Waveform Signal (4 Of 6)

      Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
   5. Waveform 5

      Reference: 

      WAVEFORM 5 TABLE
      
      

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

      Fig 6: Identifying Oscilloscope Voltage Waveform Signal (5 Of 6)

      Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
   6. Waveform 6

   Reference: 

   WAVEFORM 6 TABLE
   
   

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

   Fig 7: Identifying Oscilloscope Voltage Waveform Signal (6 Of 6)

   Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
2. Cowl Side J/B ECU (Multiplex network Body ECU) 

Fig 8: Identifying Cowl Side J/B ECU (Multiplex Network Body ECU) Connector Terminals

Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

HINT:

Each ECU terminal's standard voltage is shown in TERMINAL CONDITION SPECIFIED CONDITION TABLE  .

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 Fig 8 as a reference for the ECU terminals.