Terminals Of Ecu

WARNING: This page is about a different car, the 2005 Toyota Sienna. However, it is still accessible from the selected car via links, so may be relevant.

DISTANCE CONTROL ECU

Fig 1: Identifying Distance Control ECU
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Fig 2: Distance Control ECU Terminal Table
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1. Reference: Oscilloscope wave form (*1)
  HINT:
  - Terminal: LRDD - GND
  - Gauge set: 2 V/DIV, 10 ms/DIV
  - Condition: Ignition switch ON
  Fig 3: Identifying Oscilloscope Wave Form (*1)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Reference: Oscilloscope wave form (*2)
  HINT:
  - Terminal: LRRD - GND
  - Gauge set: 2 V/DIV, 5 ms/DIV
  - Condition: Ignition switch ON
  Fig 4: Identifying Oscilloscope Wave Form (*2)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. Reference: Oscilloscope wave form (*3)
  HINT:
  - Terminal: ELC - GND
  - Gauge set: 2 V/DIV, 5 ms/DIV
  - Condition: Ignition switch ON
  Fig 5: Identifying Oscilloscope Wave Form (*3)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
4. Reference: Oscilloscope wave form (*4)
  HINT:
  - Terminal: LCS - GND
  - Gauge set: 2 V/DIV, 5 ms/DIV
  - Condition: Ignition switch ON
Fig 6: Identifying Oscilloscope Wave Form (*4)
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ECM

Fig 7: Identifying ECM Connector Terminals
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If the value is not within the standard range, some defects on the vehicle is suspected.
1. Reference: Oscilloscope wave form (*1)
  HINT:
  - Terminal: LCS - E1
  - Gauge set: 1 V/DIV, 20 ms/DIV
  - Condition: Ignition switch ON
  Fig 8: Identifying Oscilloscope Wave Form (*1)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Reference: Oscilloscope wave form (*2)
  HINT:
  - Terminal: ELC - E1
  - Gauge set: 1 V/DIV, 20 ms/DIV
  - Condition: Ignition switch ON
Fig 9: Identifying Oscilloscope Wave Form (*2)
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LASER RADAR SENSOR

Fig 10: Identifying Laser Radar Sensor Connector Terminals

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SYMBOLS AND SPECIFIED CONDITION

Symbols (Terminal No.)	Wiring Color	Condition	Specified Condition
LGND - Body ground (L1-1 - Body ground)	R - Body ground	Always	Below 1 Ω
SGND - Body ground (L1-2 - Body ground)	BR - Body ground	Always	Below 1 Ω
LRDD - SGND (L1-3 - L1-2)	G - BR	Ignition switch ON	Pulse generation (*1)
LRRD - SGND (L1-4 - L1-2)	Y - BR	Ignition switch ON	Pulse generation (*2)
IGB - SGND (L1-5 - L1-2)	W-L - BR	Ignition switch ON	10 to 14 V

Reference: Oscilloscope wave form (*1)
HINT:
- Terminal: LRDD - SGND
- Gauge set: 1 V/DIV, 2 ms/DIV
- Condition: Ignition switch ON
Fig 11: Identifying Oscilloscope Wave Form (*1)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Reference: Oscilloscope wave form (*2)
HINT:
- Terminal: LRRD - SGND
- Gauge set: 1 V/DIV, 2 ms/DIV
- Condition: Ignition switch ON

Fig 12: Identifying Oscilloscope Wave Form (*2)

BRAKE ACTUATOR ASSY (SKID CONTROL ECU)

Fig 13: Identifying Brake Actuator Assy (Skid Control ECU) Connector Terminals
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Fig 14: Brake Actuator Assy (Skid Control ECU) Connector Terminals Table
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002