Toyota CH-R Service Manual: Occupant Classification System Malfunction (B1650/32,B165A/32)
DESCRIPTION
The airbag sensor assembly and occupant detection ECU communicate via CAN communication.
When the occupant detection ECU stores DTC B1771, B1780, B1782, B1795, B1798, B1799, U0125 or U0129, the airbag sensor assembly receives this information and stores DTC B1650/32.
When the occupant detection ECU stores DTC B1785 or B1787, the airbag sensor assembly receives this information and stores DTC B165A/32.
|
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
Test Mode / Check Mode |
|---|---|---|---|---|
|
B1650/32 |
Occupant Classification System Malfunction |
The occupant detection ECU has stored DTC B1771, B1780, B1782, B1795, B1798, B1799, U0125 or U0129. |
Occupant classification system |
Does not apply to test/check mode |
|
B165A/32 |
Occupant Detection Sensor Zero Point Calibration Incomplete |
The occupant detection ECU has stored DTC B1785 or B1787. |
Occupant classification system |
Does not apply to test/check mode |
CAUTION / NOTICE / HINT
NOTICE:
After turning the ignition switch off, waiting time may be required before disconnecting the cable from the negative (-) battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) battery terminal notices before proceeding with work.
Click here .gif)
PROCEDURE
|
1. |
CHECK DTC (OCCUPANT CLASSIFICATION SYSTEM) |
(a) Check for occupant classification system DTCs.
Click here
OK:
DTCs are not output.
| NG | .gif) |
GO TO OCCUPANT CLASSIFICATION SYSTEM |
|
.gif)
|
2. |
CLEAR DTC (AIRBAG SYSTEM) |
(a) Clear the DTCs stored in memory.
Click here
| NEXT | |
END |
Side Airbag Sensor Assembly No.2 Lost Communication (LH) (B163B/86,B163C/86)
DESCRIPTION
The side collision sensor LH circuit (bus 2) consists of the airbag sensor assembly
and floor side airbag sensor LH.
The floor side airbag sensor LH detects impacts to the vehicle and ...
Manual Cut off Switch Trouble (B1651/33)
DESCRIPTION
The airbag cut off switch circuit consists of the airbag sensor assembly and
airbag cut off switch cylinder sub-assembly.
The instrument panel passenger without door airbag assembly ca ...
Other materials:
Toyota CH-R Service Manual > Occupant Classification System: System Diagram
SYSTEM DIAGRAM
Communication Table
Transmitting ECU
(Transmitter)
Receiving ECU
Signal
Communication Method
Airbag Sensor Assembly
Occupant Detection ECU
Crash detection signal
Acceleration sign ...
Toyota CH-R Service Manual > Can Communication System: Open in Bus 4 Main Bus Line
DESCRIPTION
There may be an open circuit in one of the CAN main bus lines when the resistance
between terminals 22 (CA2H) and 7 (CA2L) of the central gateway ECU (network gateway
ECU) is 70 Ω or higher.
Symptom
Trouble Area
Resistance between terminals 2 ...
Toyota C-HR (AX20) 2023-2025 Owner's Manual
Toyota CH-R Owners Manual
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