Toyota 4Runner manuals

Toyota 4Runner: System Diagram

SYSTEM DIAGRAM




Transmitting ECU

(Transmitter)

Receiving ECU

Signal

Communication Method

Center Airbag Sensor

ECM

  • Crash detection signal
  • Fuel cut signal

CAN

Center Airbag Sensor

Main Body ECU

Driver seat buckle switch signal

Center Airbag Sensor

Combination Meter

  • SRS warning light on demand signal
  • SRS warning light blink demand signal
  • Passenger seat occupant detection signal
  • Passenger seat buckle switch signal
  • Diagnosis signal (DTC)

Combination Meter

Center Airbag Sensor

  • Vehicle speed signal
  • Meter diagnosis polling signal

ECM

Center Airbag Sensor

  • Engine speed signal
  • Accelerator opening angle information
  • Accelerator opening angle signal
  • Shift position signal
  • Test mode signal
  • Stop signal
Parts Location
PARTS LOCATION ILLUSTRATION ILLUSTRATION ILLUSTRATION ILLUSTRATION ...

How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT HINT: Use these procedures to troubleshoot the airbag system. *: Use the Techstream. PROCEDURE 1. VEHICLE BROUGHT TO WORKSHOP ...

Other materials about Toyota 4Runner:

Seat Belt Buckle Switch LH Circuit Malfunction (B1656/38)
DESCRIPTION The seat belt buckle switch LH circuit consists of the center airbag sensor and front seat inner belt LH. DTC B1656/37 is stored when a malfunction is detected in the seat belt buckle switch LH circuit. DTC Code DTC Det ...

Removal
REMOVAL PROCEDURE 1. PRECAUTION CAUTION: Be sure to read Precaution thoroughly before servicing (See page ). NOTICE: When removing the front seat assembly RH, perform zero point calibration and the sensitivity check (See page ). Whe ...

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