DTC B1150/23 Occupant Classification System Malfunction
DESCRIPTION
The occupant classification system circuit consists of the center airbag sensor assembly and the occupant classification ECU.
If the center airbag sensor assembly receives signals from the occupant classification ECU, it determines whether or not the front passenger airbag, the front seat side airbag RH, and front seat belt pretensioner RH should be operated.
DTC B1150/23 is recorded when a malfunction is detected in the occupant classification system circuit.
DTC No. |
DTC Detecting Condition |
Trouble Area |
B1150/23 |
|
|
WIRING DIAGRAM
INSPECTION PROCEDURE
1 CHECK DTC (OCCUPANT CLASSIFICATION ECU)
OK: DTC is not output.
GO TO INSPECTION PROCEDURE OF DTC OUTPUT
2 CHECK DTC (CENTER AIRBAG SENSOR ASSEMBLY)
OK: DTC B1150/23 is not output. HINT: Codes other than code B1150/23 may be output at this time, but they are not related to this check.
Go to step 3
USE SIMULATION METHOD TO CHECK
3 CHECK CONNECTION OF CONNECTORS
OK: The connectors are connected.
CONNECT CONNECTORS
4 CHECK OCCUPANT CLASSIFICATION ECU CIRCUIT (SHORT TO GROUND)
Standard resistance
Go to step 8
5 CHECK OCCUPANT CLASSIFICATION ECU CIRCUIT (SHORT TO B+)
Standard voltage
Go to step 9
6 CHECK OCCUPANT CLASSIFICATION ECU CIRCUIT (SHORT)
Standard resistance
Go to step 10
7 CHECK OCCUPANT CLASSIFICATION ECU CIRCUIT (OPEN)
NOTICE: Do not forcibly insert a service wire into the terminals of the connector when connecting.
NOTICE: Do not forcibly insert a service wire into the terminals of the connector when connecting.
Standard resistance
Go to step 11
CHECK FRONT SEAT WIRE RH (SHORT TO GROUND)
Standard resistance
REPAIR OR REPLACE FRONT SEAT WIRE RH
REPAIR OR REPLACE FLOOR WIRE NO.2
9 CHECK FRONT SEAT WIRE RH (SHORT TO B+)
Standard voltage
REPAIR OR REPLACE FRONT SEAT WIRE RH
REPAIR OR REPLACE FLOOR WIRE NO.2
10 CHECK FRONT SEAT WIRE RH (SHORT)
Standard resistance
REPAIR OR REPLACE FRONT SEAT WIRE RH
REPAIR OR REPLACE FLOOR WIRE NO.2
11 CHECK FRONT SEAT WIRE RH (OPEN)
NOTICE: Do not forcibly insert a service wire into the terminals of the connector when connecting.
NOTICE: Do not forcibly insert a service wire into the terminals of the connector when connecting.
Standard resistance
REPAIR OR REPLACE FRONT SEAT WIRE RH
REPAIR OR REPLACE FLOOR WIRE NO.2
Brake
GENERAL MAINTENANCE
1. INSPECT BRAKE LINE PIPES AND HOSES
HINT:
Check the entire circumference and length of the brake
hoses using a mirror as required in a well-lighted area.
Turn the front wheels fully right or left before checking
the front brakes.
(a) Check all the brake lines and h ...
Installation
1. INSTALL REAR COIL SPRING INSULATOR UPPER LH
(a) Install the insulator upper LH to the coil spring rear
LH.
2. INSTALL COIL SPRING REAR LH
(a) Apply a shop rug to the rear axle beam assembly.
(b) Install the coil spring rear LH to the rear axle beam
assembly.
HINT:
Fit the lowe ...
Open in Occupant Classification ECU Battery
Positive Line
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 t ...