B1796

SUPPLEMENTAL RESTRAINT SYSTEM: OCCUPANT CLASSIFICATION SYSTEM: B1796: Sleep Operation Failure of Occupant Classification ECU

DTC B1796 - Sleep Operation Failure of Occupant Classification ECU

DESCRIPTION

During sleep mode, the occupant classification ECU reads the condition of each sensor while the power switch is off.
In this mode, if occupant classification ECU detects an internal malfunction, DTC B1796 is output.






INSPECTION PROCEDURE

PROCEDURE

1. CHECK DTC
(a) Turn the power switch on (IG).
(b) Clear the DTCs stored in the occupant classification ECU Reading and Clearing Diagnostic Trouble Codes.
(c) Clear the DTCs stored in the center airbag sensor assembly DTC Check / Clear.
(d) Turn the power switch off, and wait for at least 10 seconds.
(e) Turn the power switch on (IG).
(f) Check the DTCs Reading and Clearing Diagnostic Trouble Codes.
OK:
DTC B1796 is not output.
HINT: Codes other than DTC B1796 may be output at this time, but they are not related to this check.

OK -- USE SIMULATION METHOD TO CHECK
NG -- Continue to next step.
2. REPLACE OCCUPANT CLASSIFICATION ECU
(a) Turn the power switch off.
(b) Disconnect the negative (-) terminal cable from the battery.
(c) Replace the occupant classification ECU Removal.
NEXT -- Continue to next step.
3. PERFORM ZERO POINT CALIBRATION
(a) Connect the negative (-) terminal cable to the battery.
(b) Connect Techstream to the DLC3.
(c) Turn the power switch on (IG).
(d) Using Techstream, perform "zero point calibration" Programming and Relearning.
OK:
"Zero Point Calibration is complete." is displayed.
NEXT -- Continue to next step.
4. PERFORM SENSITIVITY CHECK
(a) Using Techstream, perform "sensitivity check" Programming and Relearning.
Standard value:
27 to 33 kg (59.52 to 72.75 lb)
NEXT -- END