Toyota Venza: Occupant Classification ECU Malfunction (B1795)

Toyota Venza Service Manual / Supplemental Restraint Systems / Occupant Classification System / Occupant Classification ECU Malfunction (B1795)

DESCRIPTION

DTC B1795 is recorded when a malfunction is detected in the occupant classification ECU.

Troubleshoot DTC B1771 first if DTCs B1771 and B1795 are output simultaneously.

DTC No.	DTC Detection Condition	Trouble Area
B1795	Front seat inner belt assembly RH malfunction Occupant classification ECU malfunction	Front seat inner belt assembly RH Occupant classification ECU

HINT:

When DTC B1650/32 is detected as a result of troubleshooting for the airbag system, check the DTCs stored in the occupant classification ECU. When DTC B1795 is output, perform troubleshooting for the DTC.

PROCEDURE

CHECK DTC

(a) Turn the ignition switch to ON, and wait for at least 10 seconds.

(b) Check for DTCs (See page ).

Result

DTC B1795 is output.

DTCs B1771 and B1795 are output.

HINT:

Codes other than DTCs B1771 and B1795 may be output at this time, but they are not related to this check.

GO TO DTC B1771

2.	REPLACE OCCUPANT CLASSIFICATION ECU

(a) Turn the ignition switch off.

(b) Disconnect the cable from the negative (-) battery terminal.

3.	PERFORM ZERO POINT CALIBRATION

(a) Connect the cable to the negative (-) battery terminal.

(b) Connect the Techstream to the DLC3.

(d) Using the Techstream, perform Zero Point Calibration (See page ).

OK:

"Zero Point Calibration is complete." is displayed.

4.	PERFORM SENSITIVITY CHECK

(a) Using the Techstream, perform Sensitivity Check (See page ).

Standard:

27 to 33 kg (59.5 to 72.8 lb)

END

Diagnostic Trouble Code Chart

DIAGNOSTIC TROUBLE CODE CHART If a trouble code is displayed during the DTC check, check the circuit listed for the code in the table below (proceed to the page listed for that circuit). HINT: Wh ...

Occupant Classification Sensor Power Supply Circuit Malfunction (B1793)

DESCRIPTION The occupant classification sensor power supply circuit consists of the occupant classification ECU and occupant classification sensors. DTC B1793 is recorded when a malfunction is det ...

Other materials about Toyota Venza:

Differential System
Precaution PRECAUTION Before disassembly, clean the outside of the differential assembly and remove any sand or mud to prevent it from entering the inside of the assembly during disassembly and installation. When removing an installed pa ...

Diagnosis System
DIAGNOSIS SYSTEM 1. DESCRIPTION (a) The power window control system data can be read from the Data Link Connector 3 (DLC3) of the vehicle. When the system seems to be malfunctioning, use the Techstream to check for malfunctions and perform repairs. 2. C ...

Removal
REMOVAL CAUTION / NOTICE / HINT HINT: Use the same procedure for the RH side and LH side. The procedure listed below is for the LH side. PROCEDURE 1. REMOVE REAR WHEEL 2. SEPARATE REAR SPEED SENSOR 3. REMOVE REAR AXLE SHAFT NUT ...