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 ...

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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 ...

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