ECU TERMINAL LAYOUT

1. Transmission control computer [A860E]
   
   

   Terminal layout

   Terminal symbol [terminal No.]	I/O	Item	Measuring condition	Reference value
   S1 ↔ GND1 [A1 ↔ B8]	Output	Voltage	Shift lever P range (pressure switch 3 OFF)	0-3V
   S1 ↔ GND1 [A1 ↔ B8]	Output	Voltage	Shift lever R range (pressure switch 3 ON)	15-32V
   S2 ↔ GND1 [A2 ↔ B8]	Output	Voltage	Shift lever P range (pressure switch 4 ON)	15-32V
   S2 ↔ GND1 [A2 ↔ B8]	Output	Voltage	Running with gear 2 (pressure switch 4 OFF)	0-3V
   S3 ↔ GND1 [A3 ↔ B8]	Output	Voltage	Shift lever P range (pressure switch 6 ON)	15-32V
   S3 ↔ GND1 [A3 ↔ B8]	Output	Voltage	Running with gear 2 (pressure switch 6 OFF)	0-3V
   SL3+ ↔ SL3- [A5 ↔ A4]	Output	Waveform	Engine at idle speed	Waveform 1
   SL2+ ↔ SL2- [A7 ↔ A6]	Output	Waveform	Engine at idle speed	Waveform 2
   SL1+ ↔ SL1- [A9 ↔ A8]	Output	Waveform	Engine at idle speed	Waveform 3
   BK ↔ GND1 [A10 ↔ B8]	Input	Voltage	Brake pedal depressed (switch ON)	15-32V
   BK ↔ GND1 [A10 ↔ B8]	Input	Voltage	Brake pedal released (switch OFF)	0-3V
   PSW7 ↔ GND1 [A11 ↔ B8]	Input	Voltage	Shift lever D range, vehicle stopped (pressure switch 7 ON)	0-3V
   PSW7 ↔ GND1 [A11 ↔ B8]	Input	Voltage	Shift lever P range, vehicle stopped (pressure switch 7 OFF)	12-32V
   SPD1 ↔ GND1 [A12 ↔ B8]	Input	Waveform	Running with vehicle speed 20 km/h	Waveform 4
   CPTO ↔ GND1 [A13 ↔ B8]	Output	Voltage	PTO switch ON	15-32V
   CPTO ↔ GND1 [A13 ↔ B8]	Output	Voltage	PTO switch OFF	0-3V
   L ↔ GND1 [A17 ↔ B8]	Input	Voltage	Shift lever L-3 range	15-32V
   L ↔ GND1 [A17 ↔ B8]	Input	Voltage	Shift lever other than L-3 range	0-3V
   2 ↔ GND1 [A18 ↔ B8]	Input	Voltage	Shift lever 4 range	15-32V
   2 ↔ GND1 [A18 ↔ B8]	Input	Voltage	Shift lever other than 4 range	0-3V
   D ↔ GND1 [A19 ↔ B8]	Input	Voltage	Shift lever D range	15-32V
   D ↔ GND1 [A19 ↔ B8]	Input	Voltage	Shift lever other than D range	0-3V
   P ↔ GND1 [A20 ↔ B8]	Input	Voltage	Shift lever P range	15-32V
   P ↔ GND1 [A20 ↔ B8]	Input	Voltage	Shift lever other than P range	0-3V
   SL4+ ↔ SL4- [A21 ↔ A31]	Output	Waveform	Engine at idle speed	Waveform 5
   BFC ↔ GND1 [A22 ↔ B8]	Input	Voltage	Exhaust brake switch OFF	0-3V
   BFC ↔ GND1 [A22 ↔ B8]	Input	Voltage	Exhaust brake switch ON	15-32V
   APTO ↔ GND1 [A25 ↔ B8]	Input	Voltage	Engine stopped, ignition switch ON	15-32V
   PSW8 ↔ GND1 [A26 ↔ B8]	Input	Voltage	Shift lever P range (pressure switch 8 OFF)	12-32V
   PSW8 ↔ GND1 [A26 ↔ B8]	Input	Voltage	Shift lever D range (pressure switch 8 ON)	0-3V
   E2 ↔ Body earth [B8]	-	Conductivity	Always	Conductivity
   N ↔ GND1 [A29 ↔ B8]	Input	Voltage	Shift lever N range	15-32V
   N ↔ GND1 [A29 ↔ B8]	Input	Voltage	Shift lever other than N range	0-3V
   R ↔ GND1 [A30 ↔ B8]	Input	Voltage	Shift lever R range	15-32V
   R ↔ GND1 [A30 ↔ B8]	Input	Voltage	Shift lever other than R range	0-3V
   SP2+ ↔ GND1 [B1 ↔ B8]	Input	Voltage	Engine at idle speed	7-9V
   SP2- ↔ GND1 [B2 ↔ B8]	Input	Waveform	Running with vehicle speed 20 km/h	Waveform 6
   IG2 ↔ GND1 [B3 ↔ B8]	Input	Voltage	Engine stopped, ignition switch ON	20-32V
   IG1 ↔ GND1 [B4 ↔ B8]	Input	Voltage	Engine stopped, ignition switch ON	20-32V
   S4 ↔ GND1 [B5 ↔ B8]	Output	Voltage	Shift lever P range, engine at idle speed (pressure switch 8 OFF)	15-32V
   S4 ↔ GND1 [B5 ↔ B8]	Output	Voltage	Running with gear 2 (pressure switch 8 ON)	0-3V
   PTOS ↔ GND1 [B6 ↔ B8]	Output	Voltage	PTO switch ON	15-32V
   PTOS ↔ GND1 [B6 ↔ B8]	Output	Voltage	PTO switch OFF	0-3V
   +B ↔ GND1 [B7 ↔ B8]	Input	Voltage	Engine stopped, ignition switch ON	20-32V
   GND1 ↔ Body earth [B8]	-	Conductivity	Always	Conductivity
   POS ↔ GND1 [B10 ↔ B8]	Input	Voltage	Engine stopped, ignition switch ON	20-32V
   DG ↔ GND1 [B13 ↔ B8]	Input	Voltage	DLC3 TC-CG short-circuited	0-3V
   DG ↔ GND1 [B13 ↔ B8]	Input	Voltage	DLC3 TC-CG open	12-32V
   OD2 ↔ GND1 [B14 ↔ B8]	Input	Voltage	Transmission control switch ON (gear 4 permitted)	12-32V
   OD2 ↔ GND1 [B14 ↔ B8]	Input	Voltage	Transmission control switch OFF (gear 4 prohibited)	0-3V
   OIL ↔ E2 [B15 ↔ A28]	Input	Voltage	Engine stopped, ignition switch ON	0.1-4.9V
   OIL2 ↔ E2 [B16 ↔ A28]	Input	Voltage	Engine stopped, ignition switch ON	0.4-4.9V
   GND2 ↔ Body earth [B17]	-	Voltage	Always	Conductivity
   OILW ↔ GND1 [B19 ↔ B8]	Output	Voltage	AT oil temperature warning lamp lit	0-3V
   OILW ↔ GND1 [B19 ↔ B8]	Output	Voltage	AT oil temperature warning lamp not lit	15-32V
   ECT- ↔ GND1 [B20 ↔ B8]	Output	Waveform	Engine at idle speed	Waveform 7
   ECT+ ↔ GND1 [B21 ↔ B8]	Output	Waveform	Engine at idle speed	Waveform 8
   EFI- ↔ GND1 [B23 ↔ B8]	Input	Waveform	Engine at idle speed	Waveform 7
   EFI+ ↔ GND1 [B24 ↔ B8]	Input	Waveform	Engine at idle speed	Waveform 8
   NT- ↔ GND1 [C1 ↔ B8]	Input	Waveform	Engine at idle speed	Waveform 9
   DGLP ↔ GND1 [C2 ↔ B8]	Input	Voltage	Transmission control switch ON (gear 4 permitted)	0-3V
   DGLP ↔ GND1 [C2 ↔ B8]	Input	Voltage	Transmission control switch OFF (gear 4 prohibited)	15-32V
   PSW4 ↔ GND1 [C5 ↔ B8]	Input	Voltage	Shift lever P range, engine stopped (pressure switch 4 ON)	0-3V
   PSW4 ↔ GND1 [C5 ↔ B8]	Input	Voltage	Running with gear 2 (pressure switch 4 OFF)	12-32V
   PSW1 ↔ GND1 [C6 ↔ B8]	Input	Voltage	Shift lever P range, engine stopped (pressure switch 1 OFF)	12-32V
   PSW1 ↔ GND1 [C6 ↔ B8]	Input	Voltage	Running with gear 2 (pressure switch 1 ON)	0-3V
   NE ↔ GND1 [C7 ↔ B8]	Input	Waveform	Engine at idle speed	Waveform 10
   WGLP ↔ GND1 [C10 ↔ B8]	Output	Voltage	For 3 seconds after ignition switch ON (when the lamp is lit)	0-3V
   WGLP ↔ GND1 [C10 ↔ B8]	Output	Voltage	For 3 seconds after ignition switch ON (when the lamp is not lit)	15-32V
   PSW5 ↔ GND1 [C11 ↔ B8]	Input	Voltage	Shift lever P range, engine stopped (pressure switch 5 ON)	0-3V
   PSW5 ↔ GND1 [C11 ↔ B8]	Input	Voltage	Running with gear 2 (pressure switch 5 OFF)	12-32V
   PSW2 ↔ GND1 [C12 ↔ B8]	Input	Voltage	Shift lever R range (pressure switch 2 ON)	0-3V
   PSW2 ↔ GND1 [C12 ↔ B8]	Input	Voltage	Shift lever D range (pressure switch 2 OFF)	15-32V
   SIL ↔ GND1 [C13 ↔ B8]	Output	Waveform	When the SST is connected to DLC3	Waveform 11
   PSW6 ↔ GND1 [C16 ↔ B8]	Input	Voltage	Shift lever P range, vehicle stopped (pressure switch 6 ON)	0-3V
   PSW6 ↔ GND1 [C16 ↔ B8]	Input	Voltage	Running with gear 2 (pressure switch 6 OFF)	12-32V
   PSW3 ↔ GND1 [C17 ↔ B8]	Input	Voltage	Shift lever P range (pressure switch 3 OFF)	12-32V
   PSW3 ↔ GND1 [C17 ↔ B8]	Input	Voltage	Shift lever R range (pressure switch 3 ON)	0-3V

2. Waveform 1 (SL3)
   
   

   Item	Contents
   Measuring terminal	SL3+ ↔ SL3-
   Instrument setting	10V/DIV, 500ms/DIV
   Measuring condition	Engine at idle speed

3. Waveform 2 (SL2)
   
   

   Item	Contents
   Measuring terminal	SL2+ ↔ SL2-
   Instrument setting	10V/DIV, 500μs/DIV
   Measuring condition	Shift lever P range, engine at idle speed

4. Waveform 3 (SL1)
   
   

   Item	Contents
   Measuring terminal	SL1+ ↔ SL1-
   Instrument setting	10V/DIV, 500ms/DIV
   Measuring condition	Shift lever P range, engine at idle speed

5. Waveform 4 (speed sensor SP1)
   
   

   Item	Contents
   Measuring terminal	SPD1 ↔ GND1
   Instrument setting	2V/DIV, 20ms/DIV
   Measuring condition	Running with vehicle speed of 20 km/h

   

   The waveform cycle becomes shorter with increasing vehicle speed.

6. Waveform 5 (line pressure control solenoid ASSY (SL4))
   
   

   Item	Contents
   Measuring terminal	SL4+ ↔ SL4-
   Instrument setting	10V/DIV, 500ms/DIV
   Measuring condition	Engine at idle speed

   

   The waveform duty ratio decreases with increasing throttle opening.

7. Waveform 6 (speed sensor (SP2))
   
   

   Item	Contents
   Measuring terminal	SP2- ↔ GND1
   Instrument setting	500mv/DIV, 2ms/DIV
   Measuring condition	Running with vehicle speed of 20 km/h

   

   The waveform cycle becomes shorter with increasing vehicle speed.

8. Waveform 7 (communication line)
   
   

   Item	Contents
   Measuring terminal	EFI- ↔ GND1, ECT- ↔ GND1
   Instrument setting	1V/DIV, 2ms/DIV
   Measuring condition	Engine at idle speed

9. Waveform 8 (communication line)
   
   

   Item	Contents
   Measuring terminal	EFI+ ↔ GND1, ECT+ ↔ GND1
   Instrument setting	1V/DIV, 2ms/DIV
   Measuring condition	Engine at idle speed

10. Waveform 9 (speed sensor (NT-))
    
    

    Item	Contents
    Measuring terminal	NT- ↔ GND1
    Instrument setting	500mv/DIV, 500ms/DIV
    Measuring condition	Engine at idle speed

    

    The waveform cycle becomes shorter with increasing vehicle speed.

11. Waveform 10 (speed sensor (NE))
    
    

    Item	Contents
    Measuring terminal	NE ↔ GND1
    Instrument setting	2V/DIV, 20ms/DIV
    Measuring condition	Engine at idle speed

    

    The waveform cycle becomes shorter with increasing vehicle speed.

12. Waveform 11 (communication line)
    
    

    Item	Contents
    Measuring terminal	SIL ↔ GND1
    Instrument setting	5V/DIV, 1ms/DIV
    Measuring condition	SST connected, communication established

    

    The waveform cycle becomes shorter with increasing vehicle speed.