DTC B1797 Calibration Malfunction: Description

WARNING: This page is about a different car, the 2008 Lexus LS 600hL. However, it is still accessible from the selected car via links, so may be relevant.

DTC B1797 is output when one of the following conditions is met:

Zero point calibration is performed when the conditions for the calibration are not satisfied.
Zero point calibration has failed.

Condition for the zero point calibration:

CONDITION FOR ZERO POINT CALIBRATION

Item	Condition
DTC	Not recorded
Front passenger seat occupant	Vacant
Front passenger side buckle switch	OFF (The seat belt is not fastened)
ECU temperature	0 to 46°C (32 to 115°F)
Filtered pressure	38 to 75 count

DTC DETECTION CONDITION AND TROUBLE AREA

DTC Code	DTC Detection Condition	Trouble Area
B1797	One of following conditions is met Zero point calibration is performed when conditions for calibration are not satisfied Zero point calibration has failed	There is no malfunction if this DTC is not output again after performing occupant classification system zero point calibration Front seat set (occupant detection sensor)

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 B1797 is output, perform troubleshooting for the DTC.