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
DTC No. |
DTC Detecting Condition |
Trouble Area |
B1794 |
|
|
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
(b) Clear the DTCs stored in memory (35).
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
Short in Rear Curtain Shield Squib LH Circuit
DTC B1635/87 Short in Rear Curtain Shield Squib LH Circuit
DESCRIPTION
The rear curtain shield squib LH circuit consists of the center airbag sensor
assembly and the curtain
shield airbag assembly LH.
The circuit instructs the SRS to deploy when deployment conditions are met.
DTC B1635/87 ...
Rear Airbag Sensor RH Circuit Malfunction
DTC B1154/38 Rear Airbag Sensor RH Circuit Malfunction
DESCRIPTION
The rear airbag sensor RH circuit consists of the center airbag sensor
assembly and rear airbag sensor
RH.
If the center airbag sensor assembly receives signals from the rear airbag
sensor RH, it judges whether or
not the ...
Operation check
NOTICE: Inspection should be started after conforming that
the items listed in the "CUSTOMIZE PARAMETER" for the power back door system
have defaulted to the initial settings
1. CHECK OPENING OPERATION
Conditions necessary for the power back door to
open:
Power back d ...