B1794

DTC B1794 OCCUPANT CLASSIFICATION ECU BATTERY POSITIVE LINE OPEN

CIRCUIT DESCRIPTION

DTC Detecting Condition:

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:
- DTC B1794 is output only for models equipped with a manual front passenger seat.
- 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 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.
- When DTC B1650/32 is detected as a result of troubleshooting for the supplemental restraint system, perform troubleshooting for DTC B1794 of the occupant classification system.
- Use the hand-held tester to check the DTC of the occupant classification ECU, otherwise the DTC cannot be read.

Wiring Diagram:

Step 1 - 3:

Step 4 - 7:

INSPECTION PROCEDURE