Dtc B Open In Occupant Classification Ecu Battery Positive Line Description

This circuit consists of the occupant classification ECU and the power source circuit (battery, fuse, wire harness).

DTC B1794 is recorded when a malfunction is detected in the occupant classification ECU or the power source circuit.

HINT:

When DTC B1794 is output after switching the ignition switch LOCK-ON-LOCK 50 times in a row when a malfunction occurs in the power source circuit for the occupant classification system, the DTC is output again when a malfunction is detected even once after being cleared, unless the normal system code is input.

DIAGN

OSTIC TROUBLE CODE CHART

DTC No.

DTC Detecting Condition

Trouble Area

B1794

• The ignition switch is turned from LOCK to ON, hold for 10 seconds or more, and back to LOCK again 50 times in a row when a malfunction occurs in the power source circuit for the occupant classification system.

• Occupant classification ECU malfunction

• Occupant classification ECU

HINT:

HINT:

When DTC B1650/32 is detected as a result of troubleshooting for the supplemental restraint system, check the DTCs stored in the occupant classification ECU. When DTC B1794 is output, perform troubleshooting for the DTC.

WIRING DIAGRAM

2007 RESTRAINTS Supplemental Restraint System - Sequoia

1kz Auto Ecu Wiring Diagram
Fig. 191: Open In Occupant Classification ECU Battery Positive Line - Wiring Diagram Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
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Responses

  • astolfo
    How to read ecu pinout layout for toyota?
    7 years ago
  • dahlak
    Do it yourself auto repair for ECU code 191?
    1 year ago

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