DTC B1794 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 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.
WIRING DIAGRAM
INSPECTION PROCEDURE
1 CHECK BATTERY
Standard: 11 to 14 V
2 CHECK FUSE
Standard: Below 1 Ω
3 CHECK WIRE HARNESS
Standard voltage
Standard resistance
4 CHECK DTC
HINT: First clear DTCs stored in the occupant classification ECU and then in the center airbag sensor assembly.
OK: DTC B1794 is not output.
HINT: Codes other than code B1794 may be output at this time, but they are not related to this check.
USE SIMULATION METHOD TO CHECK
5 REPLACE OCCUPANT CLASSIFICATION ECU
6 PERFORM ZERO POINT CALIBRATION
OK: The "COMPLETED" is displayed.
7 PERFORM SENSITIVITY CHECK
Standard value: 27 to 33 kg (59.52 to 72.75 lb)
END
Removal
1. DRAIN BRAKE FLUID
NOTICE:
Wash brake fluid off immediately if it adheres to any
painted surface.
2. DISCONNECT BATTERY NEGATIVE TERMINAL
3. REMOVE AIR CLEANER ASSEMBLY WITH HOSE
4. REMOVE BRAKE ACTUATOR WITH BRACKET
(a) Release the latch of the brake actuator connector to
disconnect the c ...
Heated steering
wheel/seat heaters
Heated steering wheel and seat heaters heat the side grips of the
steering wheel and seats, respectively.
WARNING
Care should be taken to prevent injury if anyone in the
following categories
comes in contact with the steering wheel and seats when the heater
is on:
...
Precaution
1. PRECAUTION FOR VEHICLE WITH SRS AIRBAG
AND SEAT BELT PRETENSIONER
Some operations in this section may affect SRS
airbag system. Before performing the corresponding
operations, please read the NOTICE of the SRS
airbag for the proper operations.
COMPONENTS
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